16 Common Swimming injuries (Prevention & Treatment)

The 16 most common swimming injuries: swimmer’s shoulder, swimmer’s ear, breaststroker’s knee, lower back pain and neck injuries.

The repetitive stroke also causes tennis and golfer’s elbow, backstroker’s knee, bicep and rotator cuff tendinitis, wrist tendinitis and labral tears, each with its causes and warning signs.

Injury Rates and Numbers

The figures below come from injury surveillance data and peer reviewed studies. Each row names the population it was measured in, because rates from elite athletes and from recreational players are not comparable.

Finding	Measured in	Source
Male NCAA collegiate swimmers sustain an injury rate of 1.56 per 1,000 athlete-exposures.	NCAA Division I men’s collegiate swimmers, 2014-2015 through 2018-2019 seasons	NCAA Injury Surveillance Program, Journal of Athletic Training
Shoulder injuries make up 27.0% of all injuries in male collegiate swimmers, and 42.6% of injuries are from overuse.	NCAA Division I men’s collegiate swimmers, 2014-2015 through 2018-2019 seasons	NCAA Injury Surveillance Program, Journal of Athletic Training
Female NCAA collegiate swimmers sustain a higher injury rate than men, at 1.78 per 1,000 athlete-exposures.	NCAA Division I women’s collegiate swimmers, 2014-2015 through 2018-2019 seasons	NCAA Injury Surveillance Program, Journal of Athletic Training
Shoulder injuries account for 33.0% of all injuries in female collegiate swimmers, with 51.3% classified as overuse.	NCAA Division I women’s collegiate swimmers, 2014-2015 through 2018-2019 seasons	NCAA Injury Surveillance Program, Journal of Athletic Training

Overview

Injury	Body area	Typical time out
Swimmer’s Shoulder	Shoulder	2 to 12 weeks, months after surgery
Swimmer’s Ear	Ear	2 to 7 days, longer if severe
Neck Injuries	Neck	1 to 3 weeks, longer with nerve pain
Lower Back Pain	Lower back	1 to 4 weeks, months for stress fracture
Swimmer’s Knee	Knee	2 to 8 weeks by grade
Tennis Elbow (Lateral Epicondylitis)	Elbow	6 weeks to 6 months
Breaststroker’s Knee (specific to breaststroke swimmers)	Knee	2 to 6 weeks, up to 3 months
Golfer’s Elbow (Medial Epicondylitis)	Elbow	6 weeks to 6 months
Hip Injuries	Hip	3 weeks to several months
Backstrokers Knee	Knee	3 to 8 weeks, longer if cartilage
Foot and Ankle Injuries	Foot and ankle	1 to 6 weeks, 3 months if severe
Overuse Injuries (common due to repetitive nature of the sport)	Whole body	2 to 12 weeks of modified load
Bicep Tendinitis (inflammation of the bicep tendons due to overuse)	Shoulder	4 to 12 weeks, months if chronic
Rotator Cuff Tendinitis (inflammation of the shoulder tendons due to overuse)	Shoulder	6 to 12 weeks, months if torn
Wrist Tendinitis (inflammation of the wrist tendons due to overuse)	Hand and wrist	4 weeks to 3 months
Labral Tears (shoulder joint injury)	Shoulder	3 to 6 months
Adductor Strain	Groin	2 to 8 weeks, 3 months if complete
Finger Sprain	Hand and finger	3 to 6 weeks, 3 months if unstable
Thumb Ulnar Collateral Ligament Sprain	Thumb	3 to 6 weeks, 3 months after surgery
Concussion	Head	1 to 4 weeks, longer if symptoms last
Scalp Laceration and Head Contusion	Head	5 to 14 days until the wound closes
Calf Strain and Cramp	Calf	1 to 6 weeks by grade
Rib Stress Fracture	Ribs	2 to 12 weeks, longer for first rib
Hand Contusion	Hand	1 to 2 weeks, 4 to 6 if fractured
Toe Fracture	Toe	3 to 8 weeks, longer if displaced
Shin Contusion	Shin	1 to 3 weeks, lump up to 6

Swimmer’s Shoulder

Swimmer’s shoulder is an umbrella term for pain at the front and outer side of the shoulder, usually coming from the supraspinatus and biceps tendons and the subacromial bursa that sit under the roof of the joint. The pull phase of freestyle and butterfly drives the arm through repeated internal rotation while the shoulder blade rotates upward, and when the fatigued rotator cuff no longer centers the humeral head, the tendon gets compressed thousands of times per session. Excessive hand crossover at entry and a dropped elbow during the catch narrow that space further.

Symptoms

• Pain at the front or outside of the shoulder during the pull, often easing after warmup and returning late in a set.
• A dull ache when reaching overhead or behind your back outside the pool.
• Trouble sleeping on the affected side.
• The arm feels weak or slips in the water toward the end of a session.
• Clicking or catching as the arm passes the head.

How serious it is: In the mild form pain shows up only at the end of hard sets and settles within a day, and the tendon is irritated rather than damaged. In the severe form pain starts within the first few hundred meters, persists at rest and at night, and strength testing in rotation is clearly reduced, which points toward a partial cuff tear rather than simple tendon overload.

Typical time out: Two to six weeks of modified swimming for a mild, purely irritative case, six to twelve weeks when the tendon is genuinely overloaded and needs a rebuilt strength base, and four to six months if a cuff tear is repaired surgically. The spread is wide because most cases are settled by load management rather than by tissue healing time, so the swimmer who cuts volume early recovers far faster than the one who trains through it.

See a doctor if: See a physician if you cannot lift the arm sideways against gravity, if the pain wakes you at night in a resting position, or if you feel numbness or tingling down the arm.

What helps

• Cut yardage and stroke intensity to the level that keeps pain at or below a mild ache during and after swimming, rather than stopping completely.
• Drop paddles, pull buoys and heavy band work while the tendon is irritable, since they increase the load on exactly the tissue that hurts.
• Build progressive rotator cuff and scapular strength: external rotation, prone rows, serratus work, loaded slowly and increased weekly.
• Have a coach look at hand entry width, body roll and the early vertical forearm, because a crossover entry and a dropped elbow are the two technique faults most often behind this pain.
• A physical therapist is worth seeing if pain persists past two to three weeks; imaging is only useful when strength is clearly reduced or symptoms do not improve with a proper loading program. A corticosteroid injection can quiet severe pain short term but tends to leave tendons worse over the long run, so it stays an exception.

Swimmer’s Ear

Swimmer’s ear, or otitis externa, is an infection of the skin lining the outer ear canal rather than an injury to a muscle or joint. Water that stays in the canal after swimming softens the protective wax layer and raises the local pH, which lets bacteria such as pseudomonas grow. Cotton swabs and earbuds make it worse by scratching the canal skin and removing the wax barrier.

Symptoms

• Itching in the ear canal, usually the first sign.
• Pain that gets clearly worse when you pull on the earlobe or press the small flap in front of the canal.
• A blocked, full feeling and muffled hearing on that side.
• Clear or yellowish discharge from the ear.
• Redness and swelling visible at the canal opening.

How serious it is: The mild form is itching with slight discomfort and a canal that is only partly swollen. The severe form closes the canal, spreads redness onto the outer ear and face, and comes with fever or swollen lymph nodes, which needs prompt medical care rather than home measures.

Typical time out: Two to seven days out of the water once antibiotic ear drops are started, and one to two weeks if the canal is swollen enough that a wick is needed to get the drops in. Longer if it recurs, because the cause is usually habitual water retention that has not been addressed.

See a doctor if: Go to a doctor if the pain comes with fever, if the outer ear or face is swollen and red, or if hearing loss is sudden and marked, especially with diabetes or a suppressed immune system.

What helps

• Prescription antibiotic ear drops are the actual treatment; oral antibiotics are usually unnecessary unless the infection spreads beyond the canal.
• Tilt the head to each side and dry the outer ear after every swim, and use a hair dryer on the lowest cool setting held at arm’s length.
• Stop using cotton swabs entirely, since they strip the wax that keeps the canal acidic and water resistant.
• Well fitted swim earplugs or a swim cap pulled over the ears reduce water entry for people who get this repeatedly.
• Over the counter drying drops with alcohol and acetic acid can be used after swimming as prevention, but not once the canal is already infected or if the eardrum is perforated.

Neck Injuries

Neck complaints in swimmers usually involve the deep extensor muscles and the small facet joints of the cervical spine rather than any single torn structure. Breathing to one side only in freestyle rotates and extends the neck several hundred times per kilometer, and lifting the head to look forward loads the joints at the base of the skull. Butterfly and breaststroke add a repeated extension at the point where the head comes up to breathe.

Symptoms

• A tight, aching band along one side of the neck into the top of the shoulder.
• Pain that appears on the breathing side and eases when you breathe bilaterally.
• Stiffness turning the head toward the sore side, especially the morning after a hard session.
• Headache starting at the base of the skull.
• Occasional tingling into the arm if a nerve root is irritated.

How serious it is: The common form is muscular and joint related, painful with movement but with full strength in the arm, and it settles within days to weeks. The serious form involves the disc or a nerve root, with pain running below the elbow, numbness or weakness in the hand, and it needs medical assessment. Neck pain after a head impact against a wall or a shallow dive is a separate emergency situation.

Typical time out: One to three weeks for a muscular or facet related strain with adapted breathing pattern and volume, six to twelve weeks or more when a nerve root is involved. The range is wide because irritated nerve tissue calms down far more slowly than muscle.

See a doctor if: Seek care immediately for neck pain after a dive or head impact, and see a doctor if you have numbness, weakness or clumsiness in the hand, or pain that runs past the elbow.

What helps

• Switch to bilateral breathing so the neck rotates in both directions instead of one.
• Fix head position: eyes down and slightly forward, with the waterline at the crown, rather than looking ahead down the lane.
• Strengthen the deep neck flexors and the mid back with chin tucks, prone Ys and rows, since a weak upper back leaves the neck doing the stabilizing.
• Keep moving within a tolerable range; gentle range of motion beats a collar and full rest, which stiffen the neck further.
• See a physical therapist if symptoms last beyond two to three weeks, and reserve imaging for nerve symptoms or trauma.

Lower Back Pain

Low back pain in swimmers comes mostly from repeated extension of the lumbar spine, which loads the facet joints, the erector spinae muscles and in some cases the pars interarticularis of the vertebra. Butterfly and breaststroke drive that extension with every stroke cycle, and a body position with sinking hips forces the swimmer to arch to keep the head up. Vigorous dolphin kicking off every wall adds the same movement dozens of times per session.

Symptoms

• A deep ache across the low back that builds through a set of butterfly or breaststroke.
• Pain when arching backward, less pain when bending forward.
• Stiffness getting out of the pool or out of the car after training.
• Tightness on one side rather than both.
• Pain during the streamline push off the wall.

How serious it is: Most cases are muscular or facet related, they hurt with extension and settle with adapted training. A stress reaction in the pars, more common in adolescent swimmers, causes one sided extension pain that does not improve over weeks and needs imaging. Pain that runs down the leg below the knee with numbness suggests disc involvement and is the more serious end.

Typical time out: One to four weeks for a muscular or facet driven episode with modified strokes, three to six months for a lumbar stress fracture, which needs a genuine break from extension loading. Disc related pain with leg symptoms typically takes six to twelve weeks. The spread reflects that bone and nerve heal far slower than muscle.

See a doctor if: Get medical help urgently for numbness in the groin or saddle area, loss of bladder or bowel control, or leg weakness, and see a doctor if one sided back pain has not improved after several weeks.

What helps

• Temporarily reduce butterfly and breaststroke volume and shorten underwater dolphin phases, since both drive the painful movement.
• Train core endurance rather than flexion crunches: side planks, dead bugs, bird dogs, held and progressed over weeks.
• Work on body position and head position so the hips ride higher and the spine does not have to arch to compensate.
• Keep swimming in pain free strokes; complete rest deconditions the back and prolongs the problem.
• See a physician for imaging if one sided extension pain in a young swimmer persists past three to four weeks, because a missed pars stress fracture is the one that does not settle on its own.

Swimmer’s Knee

Swimmer’s knee is pain on the inner side of the knee, most often irritation of the medial collateral ligament and the surrounding joint capsule, sometimes with irritation of the cartilage behind the kneecap. The breaststroke whip kick takes the knee from a bent, outwardly rotated position into rapid extension under load, which stresses the ligament on the inside of the joint. Push offs from the wall with a poorly aligned knee add a second source of load.

Symptoms

• Pain on the inner side of the knee during and after the kick.
• Tenderness when you press along the inside of the joint line.
• Stiffness in the knee after sitting for a while.
• A feeling of instability or looseness on the inside during the whip kick.
• Mild swelling around the joint after hard kick sets.

How serious it is: Ligament irritation is graded like other sprains: grade 1 is tenderness with a stable joint, grade 2 adds some laxity when the ligament is tested sideways, grade 3 is a complete tear with clear instability, which is rare from swimming alone. Cartilage related pain behind the kneecap is a separate pattern and is usually more diffuse, felt on stairs as well as in the water.

Typical time out: Two to four weeks for a grade 1 irritation with a reduced breaststroke load, four to eight weeks for grade 2, and considerably longer for a complete tear, which almost always comes from a twisting land injury rather than swimming. Recovery drags out when the swimmer keeps the same kick volume, because the tissue never gets a lower load week.

See a doctor if: See a doctor if the knee locks, gives way, swells rapidly within hours, or if you cannot bear weight on it.

What helps

• Reduce breaststroke kick volume for a few weeks and swap in freestyle kick or pulling, which keeps fitness without the inner knee load.
• Narrow the kick: a whip kick with the knees kept inside shoulder width and the feet doing the work loads the ligament far less than a wide frog kick.
• Strengthen the hip abductors, external rotators and quadriceps so the knee is not left controlling rotation on its own.
• Warm up the legs with easy kicking before hard kick sets, since cold tissue tolerates the sudden extension poorly.
• See a physical therapist if pain persists past four weeks, and consider imaging only if the knee locks, swells or feels unstable.

Tennis Elbow (Lateral Epicondylitis)

Tennis elbow is a degenerative change in the common extensor tendon on the outer side of the elbow, mainly where the extensor carpi radialis brevis attaches to the bone. In swimming it comes from holding the wrist stiff and extended through the catch and pull, particularly with hand paddles, which force the wrist stabilizers to work against a much larger surface. Dryland pulling and grip work often contributes as much as the swimming itself.

Symptoms

• Pain on the bony point on the outer side of the elbow.
• Pain when gripping, lifting a cup or shaking hands.
• Ache that builds during the pull phase and lingers after training.
• Weak grip strength on the affected side.
• Tenderness when pressing just below the outer elbow bone.

How serious it is: The mild form hurts only with gripping and heavy pulling and has no rest pain. The severe form gives constant ache, marked grip weakness and pain at night, and it has usually run for many months, since this is a slow tendon change rather than an acute inflammation.

Typical time out: Six weeks to six months, and sometimes longer, because tendon tissue remodels slowly. Swimmers can usually keep swimming at reduced load within a few weeks, but full pain free grip strength commonly takes three months or more. The range is wide because outcome depends almost entirely on how consistently the loading program is done.

See a doctor if: See a doctor if you have numbness or tingling in the fingers, a sudden loss of grip strength, or pain after a distinct pop, which suggests something other than tendon overload.

What helps

• Progressive loading is the main treatment: slow, heavy wrist extension work, isometric holds when pain is high, moving to eccentric and heavy slow lowering as it settles.
• Take paddles and heavy pulling gear out of the program for several weeks.
• Let the wrist stay relaxed and neutral through the catch instead of cocking it back to hold water.
• A counterforce brace worn just below the elbow can reduce pain enough to keep training, though it does not fix the tendon.
• Physical therapy is worth it early because the loading program has to be dosed correctly. A corticosteroid injection lowers pain for a few weeks but is associated with worse results at one year, so it is a last resort.

Breaststroker’s Knee (specific to breaststroke swimmers)

Breaststroker’s knee is the specific overload of the medial collateral ligament and the medial joint capsule caused by the whip kick. As the legs snap from a bent and outwardly rotated position into extension, the inner side of the joint takes a valgus and rotation stress under the resistance of the water. Repeated over hundreds of kicks per session, this produces a chronic ligament irritation rather than a single tear.

Symptoms

• Inner knee pain that appears specifically during breaststroke and not other strokes.
• Soreness that starts late in a session and later moves earlier and earlier.
• Tenderness along the inner joint line to the touch.
• Stiffness in the knee the morning after breaststroke sets.
• A pulling feeling on the inside of the knee at the end of the kick.

How serious it is: Graded like an MCL sprain: grade 1 with tenderness and a stable joint, grade 2 with some sideways laxity, grade 3 with a full tear and instability, which almost never comes from swimming. Practical severity is better judged by when the pain starts: pain only in the last set is early, pain from the first length means the load has been too high for too long.

Typical time out: Two to six weeks with a reduced breaststroke volume and corrected kick width, up to three months if it has been ignored for a full season and the ligament is chronically irritated. It rarely needs surgery, so the timeline is set by how quickly the training load is adjusted.

See a doctor if: See a doctor if the knee swells noticeably, locks, or feels like it shifts sideways when you put weight on it.

What helps

• Cut the number of breaststroke kicks per week rather than the intensity of everything else, and rebuild the volume gradually over several weeks.
• Keep the knees roughly inside shoulder width during the recovery of the kick; a narrow kick reduces the sideways stress markedly.
• Do a proper leg warm up before breaststroke sets so the first kicks are not the hardest ones on cold tissue.
• Strengthen the hips, especially abductors and external rotators, and the quadriceps, to control knee alignment.
• Short cooling for pain in the first hours after an aggravating session is fine, but the actual fix is load and technique, so involve a coach and a physical therapist if it recurs each season.

Golfer’s Elbow (Medial Epicondylitis)

Golfer’s elbow is a degenerative tendon problem on the inner side of the elbow, where the wrist flexors and pronator teres attach to the medial epicondyle. Swimmers develop it from gripping the water with a flexed wrist through the pull, and especially from paddle work, which increases the force the forearm flexors must resist. Pull up and rope training on land loads the same attachment.

Symptoms

• Pain over the bony bump on the inner side of the elbow.
• Pain when squeezing or twisting, for example wringing out a towel.
• Ache during the catch and pull that persists after training.
• Tenderness when pressing the inner elbow.
• Sometimes a mild tingling into the ring and little finger.

How serious it is: The mild form is pain with gripping only, no rest pain, and full strength. The severe form has constant ache, weak grip and pain at night. Tingling into the ring and little finger points to the ulnar nerve also being irritated in its groove, which changes the treatment.

Typical time out: Six weeks to six months. Swimming at reduced load is usually possible within two to four weeks, but a pain free grip under full load often takes three months or more, because tendon remodeling is slow and depends on consistent loading rather than time off.

See a doctor if: See a doctor if you have persistent numbness in the ring and little finger, visible wasting of the hand muscles, or pain after a sudden pop during a hard pull.

What helps

• Progressive wrist flexion loading, starting with isometric holds while pain is high and moving to heavy slow lowering as it settles.
• Remove paddles, bands and heavy dryland pulling for several weeks.
• Relax the wrist through the catch so the forearm is not gripping the water against a fixed hand angle.
• A forearm strap can reduce symptoms enough to keep training while the loading program runs.
• See a physician if nerve symptoms are present, since ulnar nerve irritation needs a different approach. Corticosteroid injection gives short term relief but worse medium term outcomes in tendon problems, so avoid it as a first step.

Hip Injuries

Hip problems in swimmers involve the hip flexor tendons, the adductor group at the inner thigh, and in some cases the labrum, the cartilage rim around the socket. The breaststroke kick takes the hip through repeated flexion, abduction and outward rotation at the extreme of its range, which loads the front of the joint and the inner thigh attachments. Fast flutter kicking loads the hip flexors in a rapid, small range that fatigues them without ever lengthening them.

Symptoms

• Pain deep in the front of the hip or in the groin during the kick.
• A pinching feeling when you bring the knee up toward the chest.
• Clicking or catching in the hip during the breaststroke kick.
• Tightness at the front of the hip that persists after training.
• Ache in the inner thigh after breaststroke sets.

How serious it is: Tendon and muscle related hip pain is the milder end: it hurts with specific movements, settles with reduced load, and strength returns quickly. Labral involvement gives deep groin pain with catching or locking, is not resolved by rest alone, and needs imaging. Bone stress in the femoral neck is rare in swimmers but is the one that must not be missed if pain persists at rest.

Typical time out: Three to six weeks for a hip flexor or adductor strain, two to four months when the labrum is involved and treated without surgery, and four to six months after labral repair. The spread comes from the fact that muscle heals reliably while cartilage does not.

See a doctor if: See a doctor if the hip locks or catches repeatedly, if groin pain persists at rest or at night, or if you cannot bear weight normally on that leg.

What helps

• Reduce breaststroke kick volume and swap toward freestyle kick or pull sets while the hip settles.
• Load the adductors and hip flexors progressively with exercises like Copenhagen planks and controlled hip flexion against resistance.
• Work on hip extension mobility and glute strength so the front of the hip is not constantly working against a stiff, shortened position.
• Restrict the depth of the kick to a range that does not pinch, and build back from there.
• A physical therapist should assess persistent deep groin pain, and imaging is reasonable when catching or locking is present rather than on the first painful week.

Backstrokers Knee

Backstroke knee pain typically sits at the front of the joint and involves the cartilage on the back of the kneecap and the tendon below it, rather than the inner ligament. The backstroke flutter kick works from the hip with the knee flexing and extending rapidly against water resistance, which loads the joint between kneecap and thigh bone thousands of times per session. Backstroke starts and wall push offs add a forceful, deeply bent knee extension.

Symptoms

• A dull ache around or behind the kneecap during and after kick sets.
• Pain going down stairs or after sitting with the knee bent for a long time.
• A grinding or creaking sensation when bending the knee.
• Pain when pushing off the wall.
• Mild puffiness around the front of the knee after hard sessions.

How serious it is: The mild form is a load related irritation of the kneecap joint that responds to reduced kick volume and hip strengthening. The severe form comes with persistent swelling, giving way, or true locking, which points to cartilage damage or a meniscal problem and needs assessment.

Typical time out: Three to eight weeks for kneecap related pain treated with load management and hip and thigh strengthening, three months or more if cartilage damage is confirmed. Kneecap pain often relapses if the training load is returned to full immediately, so the honest range should include a gradual buildup.

See a doctor if: See a doctor if the knee swells repeatedly, locks in a bent position, or gives way when you push off.

What helps

• Reduce kick volume and kick board work for a few weeks, then rebuild in steps of roughly ten percent per week.
• Strengthen quadriceps and glutes on land with squats and step downs in a pain free range, since kneecap pain responds better to strength than to rest.
• Kick from the hip with a smaller knee bend rather than cycling the lower leg.
• Ease the force of wall push offs while symptoms are high, and place the feet flat rather than deep and turned out.
• See a physical therapist if pain persists past six weeks; imaging is only indicated for locking, repeated swelling or instability.

Foot and Ankle Injuries

Swimmers get two distinct types here: overload of the ankle extensor tendons and the plantar fascia from constant pointed toe kicking, and acute sprains of the outer ankle ligaments from slipping on wet deck or landing awkwardly at a turn. The flutter kick holds the ankle in extreme plantarflexion for the entire session, which shortens the calf and Achilles complex and cramps the small foot muscles. Wall push offs load the arch and the front of the ankle sharply.

Symptoms

• Cramping in the arch or along the top of the foot during kick sets.
• Pain at the front of the ankle when pointing the toes hard.
• Heel pain with the first steps in the morning if the plantar fascia is involved.
• Pain and swelling on the outer ankle after a slip or a bad turn.
• A feeling that the ankle rolls easily on the pool deck.

How serious it is: Ankle sprains are graded 1 to 3: grade 1 stretches the ligament with mild swelling and normal walking, grade 2 partially tears it with clear swelling and limping, grade 3 is a complete tear with marked instability. Overuse pain in the arch or extensor tendons is milder but tends to keep returning if the kicking pattern and calf mobility are not addressed.

Typical time out: Swimming is often possible within days of a mild sprain because the ankle carries no weight in the water. Full return to running and jumping takes one to three weeks for grade 1, three to six weeks for grade 2, and two to three months for grade 3. Plantar fascia and extensor tendon pain typically takes four to twelve weeks.

See a doctor if: See a doctor if you cannot take four steps on the foot, if there is bony tenderness on the tip of either ankle bone, or if the foot looks deformed or numb.

What helps

• After a sprain, load the ankle early within pain limits and start balance work on one leg as soon as it is tolerable, since early controlled movement beats immobilization.
• Keep swimming with a pull buoy while the ankle settles; the water keeps fitness without loading the joint.
• Stretch and strengthen the calf and the front of the shin, because a foot held pointed for hours needs the opposite range restored.
• Fins used sparingly build ankle range, but a sudden jump in fin volume is itself a common cause of foot cramping and top of foot pain.
• Wear pool sandals on wet deck, which prevents both slips and the skin infections that come with barefoot pool floors.

Overuse Injuries (common due to repetitive nature of the sport)

Overuse injury is not one structure but a pattern: a tendon, a growth plate or a bone is loaded repeatedly faster than it can adapt, so it accumulates microdamage instead of getting stronger. A competitive swimmer performs tens of thousands of stroke cycles per week, and the same tissues, mainly the rotator cuff tendons, the elbow tendons and the knee ligaments, take the load every single one of those cycles. Overuse accounts for a large share of swimming injuries in collegiate data: 42.6 percent in men and 51.3 percent in women according to the NCAA Injury Surveillance Program.

Symptoms

• Pain that starts late in a session and over weeks appears earlier and earlier.
• Soreness that no longer clears between training days.
• Performance dropping at the same effort level.
• Stiffness in the affected area first thing in the morning.
• Pain returning immediately as soon as full training resumes.

How serious it is: Overuse problems are usefully staged by when the pain appears: only after training, during training but not affecting performance, during training and limiting performance, or present at rest. The first two stages usually settle with load adjustment alone. Pain at rest means the tissue is significantly damaged and needs a real reduction in load and often medical assessment.

Typical time out: Rarely full time off, but two to twelve weeks of reduced or modified load depending on the tissue involved. Bone stress injuries need the longest, often three months, because bone remodeling cannot be shortened. The variability is high because overuse is a training problem, and the recovery time is dictated by how early it is caught.

See a doctor if: See a physician when pain is present at rest or at night, when it is sharply localized to a single point on a bone, or when swelling and warmth develop.

What helps

• Track weekly yardage and increase it in small steps, since sudden jumps at the start of a season are when most of these appear.
• Rotate strokes and vary the training stimulus so the same tissues do not take identical loading every day.
• Build a real dryland strength base, especially for the shoulder girdle and hips, because stronger tissue tolerates more repetitions.
• Keep at least one genuinely easy or non swimming day per week, and add cross training that loads the body differently.
• Treat early pain as information rather than something to push through: acting in the first two stages usually means weeks of adjustment instead of months of rehabilitation.

Bicep Tendinitis (inflammation of the bicep tendons due to overuse)

This affects the long head of the biceps tendon where it runs in a groove at the front of the upper arm and passes into the shoulder joint. In swimming it is loaded during the catch, when the arm is overhead and the tendon is pressed against the front of the joint, and during the recovery of butterfly. It very often occurs alongside rotator cuff irritation, since both structures share the same tight space.

Symptoms

• A sharp or aching pain at the front of the shoulder, often traceable with one finger.
• Pain when reaching overhead or lifting something with the palm up.
• Ache running a short way down the front of the upper arm.
• Pain increasing during the catch phase of freestyle.
• Occasional snapping at the front of the shoulder as the arm rotates.

How serious it is: The mild form is tendon irritation with pain on loading only. In longer standing cases the tendon degenerates, hurts at rest and in some cases finally ruptures, which produces a sudden pop, a bruise and a visible bulge in the upper arm. A rupture in a young athlete needs assessment, though in older adults it is often left alone.

Typical time out: Four to twelve weeks with reduced overhead load and progressive strengthening. A tendon that has been painful for months takes closer to three to six months, and surgical treatment such as tenodesis means three to four months before full swimming. The wide range reflects how long the tendon has been irritated before treatment starts.

See a doctor if: See a doctor after a sudden pop at the shoulder followed by bruising or a change in the shape of the upper arm, or if pain wakes you at night.

What helps

• Reduce overhead pulling volume and remove paddles while the tendon is irritable.
• Load the biceps and the rotator cuff progressively, beginning with isometric elbow flexion and moving to controlled eccentric work.
• Address the shoulder blade and cuff at the same time, since the tendon rarely hurts on its own.
• Adjust the catch so the arm does not enter far across the midline, which reduces the pressure at the front of the joint.
• Physical therapy is the mainstay; a corticosteroid injection into the tendon sheath may calm severe pain briefly but is associated with tendon weakening, so it is used sparingly and never repeatedly.

Rotator Cuff Tendinitis (inflammation of the shoulder tendons due to overuse)

Rotator cuff tendinopathy affects the four tendons that hold the head of the upper arm bone centered in the shoulder socket, most commonly the supraspinatus at the top. Every stroke asks these tendons to stabilize the joint while the large muscles of the back and chest generate propulsion, and once they fatigue the head of the humerus rides upward and the tendon is compressed. This is the single most common injury site in competitive swimming: shoulder injuries account for 27.0 percent of all injuries in male and 33.0 percent in female collegiate swimmers according to the NCAA Injury Surveillance Program.

Symptoms

• Ache on the outer upper arm, roughly where a shirt sleeve ends.
• Pain when lifting the arm out to the side between about 60 and 120 degrees.
• Weakness or fatigue in the arm late in a set.
• Difficulty sleeping on that shoulder.
• Pain reaching behind your back or into a jacket sleeve.

How serious it is: Tendinopathy without a tear causes pain but preserves strength, and it responds well to loading. A partial tear adds measurable weakness in rotation or elevation. A full thickness tear leaves the swimmer unable to hold the arm out to the side against resistance and usually needs surgical discussion, particularly in a young athlete.

Typical time out: Six to twelve weeks for tendinopathy managed with load adjustment and progressive strengthening, three to six months for a significant partial tear treated without surgery, and four to six months of graded return after a repair. The spread depends on whether tissue is torn or simply irritated, which strength testing separates better than symptoms do.

See a doctor if: See a doctor if you cannot hold the arm out to the side against light pressure, if the pain wakes you every night, or if weakness appears suddenly after a hard pull.

What helps

• Keep swimming at a load that stays below a mild ache rather than resting completely, because tendons need load to remodel.
• Progressive external rotation and scapular strengthening two to three times a week, increased gradually over months rather than weeks.
• Remove paddles, bands and heavy dryland pressing while the shoulder is irritable.
• Video the stroke and fix hand entry, body roll and breathing pattern, since technique determines how much load reaches the cuff on every cycle.
• See a physical therapist early; imaging is worthwhile when strength is clearly reduced or when a proper twelve week loading program has not helped.

Wrist Tendinitis (inflammation of the wrist tendons due to overuse)

Wrist tendinopathy in swimmers usually affects the tendons on the thumb side, the abductor pollicis longus and extensor pollicis brevis, or the extensor tendons on the back of the wrist as they pass through their sheaths. Holding the hand rigid against water pressure through the entire pull loads these tendons statically for the whole session, and hand paddles multiply that force by enlarging the surface. Turns with a hand plant on the wall add a compressive load.

Symptoms

• Pain on the thumb side or the back of the wrist during the pull.
• Pain when gripping or twisting a door handle.
• Swelling or a soft thickening over the tendon.
• A creaking or squeaking sensation when moving the wrist.
• Weakness holding water at the start of the pull.

How serious it is: The mild form is pain with loading only and no swelling. The more severe form has visible swelling over the tendon sheath, pain at rest, and marked loss of grip. Numbness in the thumb, index and middle fingers points to carpal tunnel compression rather than tendon overload and is treated differently.

Typical time out: Four to eight weeks with reduced paddle work and progressive loading, up to three months when the tendon sheath is thickened and inflamed. The range is wide because the wrist is hard to unload in a swimmer who keeps training full volume.

See a doctor if: See a doctor if you have persistent numbness or tingling in the fingers, if the wrist is visibly swollen and warm, or if you cannot grip at all.

What helps

• Take paddles out of training entirely for several weeks; they are the single biggest wrist load in the sport.
• Let the wrist stay in a neutral, relaxed position through the pull instead of cocking it to hold water.
• Progressive wrist and forearm strengthening, starting with isometrics and building to full range work.
• A short period in a wrist brace during land activities can help thumb side tendon pain, but it should not replace the loading program.
• See a physician if symptoms persist beyond six to eight weeks, since a thickened tendon sheath sometimes needs targeted treatment.

Labral Tears (shoulder joint injury)

The labrum is the cartilage rim around the shallow shoulder socket that deepens the joint and anchors the long head of the biceps at the top. In swimmers it is damaged gradually by repeated overhead traction and rotation rather than by a single event, most often at the upper attachment where the biceps pulls. Butterfly recovery and forceful catches with a loose, hypermobile shoulder put the greatest strain on it.

Symptoms

• Deep pain inside the shoulder that is hard to point to.
• Clicking, catching or a popping sensation as the arm passes overhead.
• A sense that the shoulder is loose or might slip.
• Pain during the catch and at the very start of the pull.
• Loss of power in the water without an obvious loss of strength on land.

How serious it is: A frayed labrum causes pain with specific positions but no instability and can be managed without surgery. A detached labrum, particularly at the biceps anchor, produces catching and a feeling of the joint slipping. Full instability with recurrent dislocation is the severe end and is uncommon from swimming alone.

Typical time out: Three to four months of rehabilitation for a labral tear treated without surgery, and four to six months before full training after a repair, sometimes longer for competitive butterfly and backstroke. Cartilage has a poor blood supply, which is why the timelines here are measured in months rather than weeks.

See a doctor if: See a doctor if the shoulder actually slips out of place, if it locks in a position, or if you feel numbness or weakness down the arm after an episode of catching.

What helps

• Begin with a structured rotator cuff and scapular stabilization program, since most labral tears in swimmers do better with rehabilitation than with early surgery.
• Reduce the range of the catch and avoid positions that reproduce the catching sensation while strength is being built.
• Address shoulder blade control and thoracic mobility, because a stiff upper back forces the shoulder joint to find range it does not have.
• MRI with contrast is the appropriate imaging when catching and instability persist after a proper rehabilitation trial.
• Discuss surgery only if a documented tear still causes mechanical catching after three to four months of consistent rehabilitation.

Adductor Strain

An adductor strain is a tear in the muscles running from the pubic bone to the inner thigh, most often the adductor longus close to its tendon attachment. The breaststroke whip kick loads these muscles at the moment the legs are widest and then contracts them forcefully to squeeze the legs together, which is exactly the lengthening under load that produces strains. Swimmers who suddenly add breaststroke volume after a break are the most affected.

Symptoms

• A sudden sharp pain in the groin during a breaststroke kick.
• Tenderness along the inner thigh close to the pubic bone.
• Pain when squeezing the knees together against resistance.
• Ache in the groin when climbing out of the pool or getting into a car.
• Bruising on the inner thigh in the days after a more severe tear.

How serious it is: Graded 1 to 3: grade 1 is a mild tear with pain but nearly full strength, grade 2 involves a clear loss of squeeze strength and often bruising, grade 3 is a complete tear with a palpable gap and marked weakness. Groin pain lasting many weeks without a clear tearing event may be a different problem such as a bone stress injury or a hernia and needs assessment.

Typical time out: Two to four weeks for grade 1, four to eight weeks for grade 2, and three months or more for a complete tear or a surgical repair. Swimmers can often continue pulling with a buoy within days, so the range refers to full return to breaststroke rather than to all training.

See a doctor if: See a doctor if you felt a pop with immediate weakness, if there is a visible dent in the muscle, or if groin pain persists for more than a few weeks without improving.

What helps

• Start gentle isometric adduction, squeezing a ball between the knees, within the first days at a pain free intensity.
• Progress to Copenhagen planks and other loaded adduction work over several weeks, since strength is the best protection against recurrence.
• Keep training with a pull buoy and upper body work while the muscle heals.
• Return to breaststroke gradually with a narrower kick and a reduced number of kicks per session.
• Short cooling in the first hours can help pain, but the recovery is driven by progressive loading, not by rest.

Finger Sprain

A finger sprain is an injury to the collateral ligaments or the volar plate at one of the small finger joints, usually the middle joint. Swimmers get it by jamming a hand into the pool wall at a turn, catching a finger on a lane rope, or clipping the wall during a backstroke finish when they misjudge the flags. The finger is forced sideways or backward beyond its normal range and the ligament is stretched or torn.

Symptoms

• Immediate pain and swelling at one finger joint.
• The joint becomes stiff and difficult to bend fully within hours.
• Pain when the finger is pushed sideways.
• Bruising around the joint after a day or two.
• The finger stays thickened around the joint for weeks.

How serious it is: Grade 1 stretches the ligament, the joint is stable and only tender. Grade 2 partially tears it with some sideways opening. Grade 3 is a complete tear with an unstable joint. A finger that will not straighten or bend actively, or that looks crooked, may involve a tendon avulsion or a fracture and needs an x ray.

Typical time out: Swimming is usually possible within a few days, since the hand does little gripping. Full pain free grip and normal joint motion take three to six weeks for grade 1 and 2, and up to three months for a complete tear or a joint that needed splinting in a set position.

See a doctor if: See a doctor if the finger is visibly crooked, if you cannot actively straighten or bend it, or if the joint feels like it opens sideways.

What helps

• Buddy tape the injured finger to the neighboring one for the first weeks, which supports the ligament while allowing movement.
• Start gentle bending and straightening within days, because these joints stiffen quickly if kept still.
• Get an x ray after any jam that leaves a crooked finger or an inability to move it actively.
• Expect the joint to stay visibly thicker for months even after full function returns, which is normal and not a sign of ongoing damage.
• Return to paddles and pushing off the wall with the hands only once the finger tolerates a firm grip.

Thumb Ulnar Collateral Ligament Sprain

This is a sprain of the ligament on the inner side of the base joint of the thumb, which stops the thumb being forced away from the index finger. In the pool it happens when a hand strikes the wall or a lane rope with the thumb spread, or when a hand paddle catches and levers the thumb sideways. The ligament stabilizes every pinch and grip, so even a partial tear is noticeable in daily life.

Symptoms

• Pain at the web between thumb and index finger, at the base of the thumb.
• Swelling and bruising over the inner side of the thumb base.
• Weakness pinching, opening a jar or turning a key.
• A feeling that the thumb wobbles sideways when you grip.
• Pain when a paddle strap pulls across the thumb.

How serious it is: Grade 1 and 2 involve a stretched or partially torn ligament with the joint still stable, and they heal in a splint. Grade 3 is a complete tear, and in some of those the torn end flips out of position so that it cannot heal against the bone, which requires surgery. Marked sideways looseness compared with the other thumb is the sign that separates them.

Typical time out: Three to six weeks in a thumb splint for a partial tear, six weeks to three months after surgical repair of a complete tear. Swimming without paddles is often possible early because the thumb is not loaded much in the stroke itself.

See a doctor if: See a doctor promptly if the thumb feels clearly loose sideways compared with the other hand or if pinch strength is markedly reduced, since a complete tear treated late does badly.

What helps

• Get it assessed within the first days rather than waiting, because the treatment decision depends on whether the ligament is fully torn.
• Wear a thumb spica splint for the period advised, which keeps the ligament ends together.
• Keep swimming without paddles and without wall pushes using the hands during the splint period.
• Start pinch and grip strengthening once the splint comes off, progressing over several weeks.
• Adjust paddle straps so nothing pulls across the thumb when you return to them.

Concussion

A concussion is a temporary disturbance of brain function caused by a blow or a rapid acceleration of the head, without any structural damage visible on standard imaging. Swimmers sustain them by striking the head on the pool wall or the bottom during a turn or a dive into shallow water, by colliding with another swimmer in a crowded lane or in open water, and by falls on wet deck. Water polo and artistic swimming add direct contact with elbows and knees.

Symptoms

• Headache and a foggy or slowed feeling after a head impact.
• Dizziness or feeling off balance in and out of the water.
• Nausea, sensitivity to light or noise.
• Difficulty concentrating and unusual fatigue in the following days.
• Feeling emotionally flat or unusually irritable.

How serious it is: There is no useful grading applied at the time of injury; severity is judged afterwards by how long symptoms last. Most resolve within two weeks in adults and four weeks in adolescents. Loss of consciousness, seizures, repeated vomiting or worsening headache indicate a possible more serious brain injury and are an emergency.

Typical time out: One to four weeks in most cases, following a graded return that adds effort in steps only once each step is symptom free. Some swimmers take months. In water the risk is not only symptoms but drowning, so a swimmer with any concussion symptoms stays out of the pool entirely until cleared.

See a doctor if: Call emergency services for loss of consciousness, a seizure, repeated vomiting, worsening headache, confusion that deepens, unequal pupils, or any neck pain after a dive.

What helps

• Get out of the water immediately and stay out; a concussed swimmer in a pool is a drowning risk.
• Rest relatively for the first 24 to 48 hours, then reintroduce light activity as tolerated, since prolonged complete rest slows recovery.
• Return to swimming in graded steps, adding intensity only when the previous step caused no symptoms, and only with supervision in the pool.
• Get medical assessment for every suspected concussion, and immediate assessment after a dive into shallow water because of the neck.
• Avoid a second impact before symptoms have fully cleared, which is the situation with the worst outcomes.

Scalp Laceration and Head Contusion

This is a direct injury to the skin and the soft tissue over the skull, from striking the head on the pool edge, the starting block, the bottom in shallow water or a lane divider. The scalp has a rich blood supply and sits directly over bone, so even a modest impact splits the skin and bleeds heavily. A contusion without a break in the skin produces a swelling on the skull that can take weeks to settle.

Symptoms

• Heavy bleeding from a small cut on the scalp.
• A tender lump on the skull at the point of impact.
• Local pain when touching or brushing the area.
• A headache limited to the impact site rather than the whole head.
• Bruising that spreads over the following days.

How serious it is: An isolated laceration or bruise is a local wound and heals reliably. The severity lies in what may accompany it: any head impact strong enough to split the scalp can also cause a concussion or a neck injury, and a dent felt in the skull under a cut suggests a fracture. The wound itself is rarely the problem.

Typical time out: Out of chlorinated water until the wound is closed, typically five to ten days for a sutured or glued laceration and one to two weeks for a deeper cut. A contusion alone needs only a few days once concussion has been excluded.

See a doctor if: Seek medical care if you can feel a step or dent in the bone, if bleeding does not stop with ten minutes of firm pressure, or if there is any confusion, vomiting or neck pain.

What helps

• Apply firm direct pressure with a clean cloth; scalp bleeding looks alarming but almost always stops with pressure.
• Have any gaping cut closed within hours, since scalp wounds heal best when closed early.
• Stay out of pool water until the wound is fully closed, because chlorinated water and pool bacteria delay healing.
• Screen for concussion and for neck pain after every head impact, especially after a dive.
• Wear a cap and check the pool depth before diving, since almost all of these come from a wall, a block or a shallow bottom.

Calf Strain and Cramp

The calf complex consists of the gastrocnemius, which crosses both knee and ankle, and the deeper soleus. Swimmers hold the ankle pointed for the whole session, which keeps both muscles in a shortened position while they contract repeatedly against water resistance, and this combination produces cramping and small tears at the junction between muscle and tendon. Fins increase the resistance considerably and are a frequent trigger in swimmers who add them quickly.

Symptoms

• A sudden gripping cramp in the calf during or just after a kick set.
• A sharp pain in the back of the lower leg, sometimes described as being hit.
• Tenderness in the muscle belly when you press it.
• Pain pushing off when walking on the deck afterwards.
• A tight, knotted feeling that persists for days.

How serious it is: A cramp is a transient muscle spasm with no tissue damage and settles in minutes. A strain is graded 1 to 3: grade 1 is a minor tear with mild pain and near normal walking, grade 2 gives a limp and clear weakness on pushing off, grade 3 is a complete tear with obvious loss of function. Sudden calf pain with swelling and warmth but no clear triggering movement should raise the question of a blood clot.

Typical time out: Minutes for a cramp, one to three weeks for a grade 1 strain, three to six weeks for grade 2, and two to three months for a complete tear. Swimming with a pull buoy is usually possible early, so the range describes return to full kicking.

See a doctor if: See a doctor if the calf is swollen, warm and painful without an obvious injury, if you cannot push off at all, or if you felt a distinct pop with immediate weakness.

What helps

• Interrupt a cramp by gently pulling the toes toward the shin and holding, then stopping the set rather than pushing on.
• Restore calf and ankle mobility in the opposite direction, since a foot held pointed all session is the underlying cause.
• Build calf strength on land with progressive heel raises, including bent knee versions for the soleus.
• Increase fin use gradually rather than adding long fin sets in a single week.
• Maintain fluid and electrolyte intake in warm pools, because swimmers sweat without noticing it.

Rib Stress Fracture

A rib stress fracture is a fatigue break in the bone, most often the first rib in swimmers, caused by the repeated pull of the muscles that attach to it rather than by any impact. The serratus anterior and the scalene muscles tug on the same section of rib with every stroke, and when the load rises faster than the bone can adapt the bone develops a stress reaction and eventually a crack. Intercostal muscle strain produces similar pain and is more common, but it settles far faster.

Symptoms

• A localized, sharp pain at one point on the rib cage or at the base of the neck.
• Pain that increases with deep breathing, coughing or sneezing.
• Pain with the pull phase and with reaching overhead.
• Tenderness when pressing on that exact spot.
• Pain that persists at rest and at night as the injury progresses.

How serious it is: An intercostal muscle strain hurts over a broad area, eases within days to weeks and is the mild end. A bone stress reaction is a localized point of pain that does not settle with a few days off. A completed stress fracture is the severe end, and it needs a real break from training. Standard x rays often miss both, so persistent pinpoint rib pain warrants better imaging.

Typical time out: Two to four weeks for an intercostal muscle strain, six to twelve weeks for a rib stress fracture, and sometimes longer for a first rib fracture, since it is hard to unload while any upper body training continues. The wide range is because bone healing cannot be accelerated and the sport keeps pulling on the same rib.

See a doctor if: See a doctor for pinpoint rib pain lasting more than two weeks, for rib pain at rest or at night, and urgently for shortness of breath or arm swelling and discoloration.

What helps

• Stop the aggravating training and get imaging rather than working through pinpoint rib pain, because a stress fracture continues to worsen with load.
• Reduce or remove paddle and heavy pulling work, which is what loads the serratus attachment.
• Review training progression: rib stress fractures almost always follow a rapid increase in yardage or dryland volume.
• Check energy availability and, where relevant, menstrual and bone health, since bone stress injuries often signal under fueling.
• Return in graded steps with a coach, adding pull volume last.

Hand Contusion

A hand contusion is a bruise of the soft tissue and small bones on the back of the hand, caused by striking the pool wall, a lane rope, the deck or another swimmer. It happens most often on a freestyle finish into the wall, on a backstroke finish when the flags are misjudged, and when swimming close to a wall in open lanes. The bones of the hand sit just under the skin, so the impact goes straight into bone and periosteum.

Symptoms

• Immediate pain over the back of the hand after striking something.
• Swelling on the top of the hand within an hour.
• Bruising that spreads over the following days.
• Pain when making a fist or gripping.
• Tenderness pressing along one of the long bones.

How serious it is: A simple bruise is tender and swollen but the hand functions and the bones are not point tender. A metacarpal fracture is the more serious version, with pinpoint bone tenderness, pain on axial pressure through the finger, and sometimes a knuckle that has lost its normal contour. A hand that looks rotated when you make a fist needs an x ray without delay.

Typical time out: One to two weeks for a bruise, four to six weeks for a metacarpal fracture, and longer if the fracture needs fixing. Swimming with a fist or a modified hand position is often possible earlier than full paddle and wall work.

See a doctor if: See a doctor if a knuckle looks flattened or a finger rotates when you make a fist, if pressing on a single bone is sharply painful, or if the hand goes numb.

What helps

• Get an x ray for pinpoint bone tenderness after a wall strike; a missed metacarpal fracture heals crooked.
• Short cooling in the first hours helps the pain, then begin gentle finger movement to keep the hand from stiffening.
• Keep swimming with a relaxed hand and no paddles while the bruise settles.
• Count strokes into the wall and use the backstroke flags properly, since almost all hand injuries in the pool come from a misjudged finish.
• Return to paddles only when a firm grip and a flat palm on the wall are pain free.

Toe Fracture

A toe fracture in swimmers almost never happens in the water. It comes from kicking the pool wall, a starting block, a ladder or a bench barefoot on the deck, or from stubbing the foot on a lane divider fitting. The small toes are the most affected because they are least protected, while the big toe carries the most consequence because it bears load when pushing off.

Symptoms

• Immediate sharp pain in the toe after striking something.
• Swelling and bruising that reach the neighboring toes.
• Pain pushing off the foot when walking.
• The toe looks angled or sits differently from the same toe on the other foot.
• Bruising under the toenail.

How serious it is: A small toe fracture without displacement is treated by taping and heals reliably. A displaced or rotated toe, or any fracture into the joint at the base of the big toe, is the serious version and may need setting or fixation. A fracture that breaks the skin is an emergency because of infection risk.

Typical time out: Swimming without a forceful push off is often possible within a few days. Full return with wall push offs takes three to six weeks for a small toe and four to eight weeks for the big toe, longer if the fracture is displaced or involves the joint.

See a doctor if: See a doctor if the toe points in a clearly wrong direction, if the skin is broken over the fracture, or if the big toe is involved.

What helps

• Buddy tape a small toe to its neighbor with a small pad between them, which is usually all a simple fracture needs.
• Wear a stiff soled shoe on land for the first weeks so the toe does not bend when you walk.
• Keep swimming with a pull buoy while the push off is painful, and reintroduce wall push offs gradually.
• Get an x ray for a big toe injury or any toe that looks crooked, since these are the ones that need correction.
• Wear pool sandals on deck, which prevents most of these entirely.

Shin Contusion

The shin bone lies directly under the skin with almost no muscle covering it, so a strike bruises the bone lining itself, not just soft tissue. Swimmers get shin bruises from misjudging a turn and hitting the wall or the gutter with the front of the lower leg, from kicking the lane rope fittings, and from the deck edge and ladders when climbing out. Repeated small contacts leave a swimmer with the row of bruises down both shins that many training swimmers recognize.

Symptoms

• A sharply tender spot on the front of the shin after contact.
• A firm lump under the skin at the impact point.
• Visible bruising that turns yellow and green over one to two weeks.
• Pain when anything presses on the area, including a wetsuit or tight leg.
• Occasional numbness in a small patch of skin over the bruise.

How serious it is: A simple bruise is tender and discolored but the leg carries weight normally. The more serious version is a lump that keeps growing over hours, severe pain out of proportion to the injury, or a tight, hard lower leg with numbness, which raises the concern of a compartment problem. Pain over the bone that persists for weeks without an obvious impact may be a stress reaction instead.

Typical time out: Swimming is usually possible immediately, since the water carries no impact. The bruise itself is tender for one to three weeks and the lump can take four to six weeks to disappear completely. Longer if a firm swelling persists, which occasionally calcifies.

See a doctor if: Seek care urgently if the lower leg becomes tight and hard with severe pain, numbness or a cold foot, and see a doctor if a lump keeps growing after the first day.

What helps

• Cool the area briefly in the first hours to reduce the pain, then leave it alone rather than massaging it.
• Keep the leg moving and keep swimming; the water loads nothing and movement helps the bruise clear.
• Protect the spot from further knocks, because a second impact on the same place delays healing considerably.
• Count strokes into the wall on turns, since most shin bruises in a pool come from a misjudged flip turn.
• See a doctor if a hard lump is still there after several weeks, as bruises on the shin occasionally form bone deposits.

First Aid for Soft Tissue Injuries: PEACE and LOVE

Sports medicine has moved on from RICE. The current guidance, published in the British Journal of Sports Medicine in 2019, splits care into the first days after the injury and everything that follows.

PEACE, the first two to three days

• Protect: unload the area and limit movement that hurts, but only briefly.
• Elevate: keep the limb above heart level when you can.
• Avoid anti-inflammatories: they may blunt the healing you need.
• Compress: a bandage or taping limits swelling.
• Educate: your body heals this on its own; passive treatments rarely speed it up.

LOVE, from day three onward

• Load: return to movement as pain allows, early loading builds tissue.
• Optimism: expectations shape recovery more than most people assume.
• Vascularization: easy cardio that does not hurt brings blood to the area.
• Exercise: restore strength, mobility and balance before returning to play.

Ice still helps with pain in the first hours. What changed is the evidence that long icing and routine anti-inflammatory drugs slow tissue repair.

How to Lower Your Risk in Swimming

• Increase weekly yardage in small steps and treat the first weeks of a season as a build, not a test. Most swimming injuries are the result of a jump in volume rather than a single bad movement.
• Breathe to both sides in freestyle. A one sided breathing pattern rotates the neck and shoulder in the same direction thousands of times per session and is behind a large share of neck and shoulder pain.
• Do consistent dryland strength work for the rotator cuff, the shoulder blade muscles and the mid back, since the cuff is what fails first and the shoulder carries about a third of all injuries in this sport.
• Keep paddle, band and fin volume deliberately low and increase it separately from yardage. These three items multiply the load on the shoulder, wrist, elbow and calf without adding much distance.
• Have the stroke filmed and checked at least once a season. Hand crossover at entry, a dropped elbow in the catch, a wide breaststroke kick and lifting the head to breathe are the four faults that concentrate load on a single structure.
• Wear sandals on the pool deck and count strokes into the wall on turns and backstroke finishes, which prevents the toe, shin, hand and finger injuries that make up most of the acute damage in swimming.

When to Stop and Get Medical Help

Most of the injuries on this page are treated at home. These signs are not.

• Any head impact followed by confusion, dizziness, vomiting or a headache that gets worse. Get out of the water immediately, since a concussed swimmer is a drowning risk.
• Neck pain after a dive or a collision, especially with tingling or weakness in the arms. Do not move the person and call for emergency help.
• Numbness, tingling or loss of strength in an arm or leg that does not clear within minutes.
• A joint that will not move, that locks in one position, or that looks visibly deformed or out of place.
• Sharply localized pain on a bone that is present at rest and at night, which points to a bone stress injury rather than muscle soreness.
• A lower leg or forearm that becomes tight, hard and severely painful after an impact, particularly with numbness or a cold foot or hand.

Sources

• NCAA Injury Surveillance Program, Journal of Athletic Training
• NCAA Injury Surveillance Program, Journal of Athletic Training

This article is general information, not medical advice. If you are hurt, a doctor or physiotherapist who can examine you is worth more than any web page. Last reviewed: August 2026.

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