17 Common BMX Racing injuries (Prevention & Treatment)

All 17 common BMX racing injuries, from fractured arms, legs and collarbones to concussions, dislocated shoulders and wrist injuries.

Crashes also cause knee and ankle damage, elbow, back, hip and rib injuries, facial trauma and road rash, and the list closes with dehydration and heat exhaustion on race days.

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
At the 2020 Tokyo Olympics, BMX racing athletes sustained injuries at a rate of 27.1 per 100 athletes.	48 BMX racing participants at the 2020 Tokyo Olympic Games, 2020	Soligard T et al. 2023, cited in Rockliff C et al., ‘Injuries, Risk Factors, and Prevention Strategies in Bicycle Motocross (BMX): A Scoping Review,’ Sports Health 2025;17(5):965-977
At the 2016 Rio Olympics, when BMX racing was the sport’s only Olympic discipline, the injury rate was 37.5 per 100 registered athletes.	48 BMX racing participants at the 2016 Rio Olympic Games, 2016	Soligard T et al. 2017, cited in Rockliff C et al., ‘Injuries, Risk Factors, and Prevention Strategies in Bicycle Motocross (BMX): A Scoping Review,’ Sports Health 2025;17(5):965-977
At the 2007 BMX World Championships, 229 injuries were recorded among 1,954 participants, an incidence of 11.7 per 100 athletes.	1,954 participants at the BMX World Championships, 2007	Konczak CR 2010, cited in Rockliff C et al., ‘Injuries, Risk Factors, and Prevention Strategies in Bicycle Motocross (BMX): A Scoping Review,’ Sports Health 2025;17(5):965-977
At the 1989 BMX European Championships, the injury rate was 1,190.48 injuries per 1,000 competition hours, about 6.3 per 100 athletes.	976 participants at the BMX European Championships, 1989	Brogger-Jensen T et al. 1990, cited in Rockliff C et al., ‘Injuries, Risk Factors, and Prevention Strategies in Bicycle Motocross (BMX): A Scoping Review,’ Sports Health 2025;17(5):965-977
At the 2020 Tokyo Olympics, 10.4 percent of BMX racing athletes (5 of 48) sustained an injury that caused more than 7 days of time loss from sport.	48 BMX racing participants at the 2020 Tokyo Olympic Games, 2020	Soligard T et al. 2023, cited in Rockliff C et al., ‘Injuries, Risk Factors, and Prevention Strategies in Bicycle Motocross (BMX): A Scoping Review,’ Sports Health 2025;17(5):965-977

Overview

Injury	Body area	Typical time out
Fractures (arms, legs, collarbone)	Arm, leg and collarbone	6 to 12 weeks, longer after surgery
Concussions (from crashes or falls)	Head and brain	1 to 4 weeks, months if it persists
Shoulder injuries (rotator cuff, dislocations)	Shoulder	2 weeks to 6 months by injury type
Wrist injuries (sprains, fractures)	Hand and wrist	1 to 3 weeks, 6 to 12 if fractured
Knee injuries (ACL, meniscus)	Knee	2 to 6 weeks, 9 to 12 months post ACL
Ankle sprains	Ankle	1 to 3 weeks, up to 3 months grade 3
Elbow injuries (sprains, dislocations)	Elbow	2 weeks to 6 months by injury type
Hand injuries (fractures, sprains)	Hand	2 to 8 weeks, longer after surgery
Back injuries (muscle strains, herniated discs)	Lower back	1 to 3 weeks, 6+ weeks with sciatica
Hip injuries (strains, dislocations)	Hip	2 to 6 weeks, 3+ months if complete
Facial injuries (bruises, fractures)	Face	1 to 2 weeks, 6 to 12 if fixed
Rib injuries (bruises, fractures)	Chest and ribs	3 to 6 weeks, 6 to 12 if multiple
Neck injuries (strains, fractures)	Neck	1 to 3 weeks, months if fractured
Head injuries (concussions)	Head	1 to 4 weeks, months if structural
Cuts and abrasions (from crashes or contact with the bike)	Skin	A few days to 2 weeks
Dehydration	Whole body	Hours to a day
Heat exhaustion/heat stroke	Whole body	1 to 3 days, weeks after heat stroke

Fractures (arms, legs, collarbone)

A fracture is a break in the bone itself, most often the clavicle, the radius just above the wrist, or the small bones of the hand and forearm. In BMX racing the typical mechanism is landing on an outstretched arm or on the point of the shoulder after going over the bars, which drives the whole impact of the crash through one bone. Leg fractures are less frequent and usually come from the bike or another rider landing on the rider.

Symptoms

• Sharp pain at one clearly defined point on the bone that does not settle after a few minutes
• Swelling and bruising that builds up over the first hour
• A visible bump, step or angle where the limb used to be straight
• You cannot load the arm or leg, or you instinctively hold it still
• A grinding or clicking feeling when the limb moves

How serious it is: Fractures are graded by how the bone ends sit: an undisplaced crack that stays in line heals in a sling or cast, while a displaced or multi-fragment break needs to be set, and an open fracture with a wound over the bone is an emergency because of infection risk. Clavicle fractures with heavy shortening or skin tenting are the ones most likely to be plated.

Typical time out: Six to twelve weeks for a simple undisplaced clavicle or forearm fracture before racing again, and three to six months when the bone is plated or the break involves a joint surface. The range is wide because bone healing time depends on the site, the blood supply and whether the break is stable, and because gate starts load the arms hard long before the bone feels normal.

See a doctor if: Go to an emergency department the same day if the limb looks bent or shortened, if the skin over the break is broken or tented white, or if the hand or foot beyond the injury goes numb, pale or cold.

What helps

• Support the limb the way it is most comfortable, a sling for the collarbone, and get an X-ray rather than waiting to see if it settles
• Short periods of cooling in the first hours are fine for pain, but they do not change the healing of the bone
• Move every joint that is not immobilized from day one, so the shoulder, elbow and fingers do not stiffen inside the cast or sling
• Start loaded strengthening as soon as your surgeon or physician clears it, because bone responds to load and the surrounding muscle wastes fast
• Return to the gate in stages: rolling, then pumping, then standing starts, then jumps, and only race when a hard landing does not produce pain at the fracture site

Concussions (from crashes or falls)

A concussion is a disturbance of brain function caused by an impact or by a sudden acceleration of the head, not by a bleed or a visible structural injury. In BMX racing it usually happens when the helmet strikes the track or another bike, or when the body stops abruptly and the head keeps moving. A helmet lowers the risk of skull fracture and severe brain injury but does not remove the rotational forces that cause concussion.

Symptoms

• Headache or a pressure feeling in the head that starts within minutes of the crash
• Feeling dazed, slowed down or as if you are behind glass
• Dizziness, nausea or trouble focusing your eyes
• Sensitivity to bright light and noise in the pits
• Not being able to recall the run or the crash itself

How serious it is: Concussion is no longer graded on the day, because the old mild to severe scales did not predict recovery. What matters is the number of symptoms, whether symptoms last beyond about four weeks, and whether you have had previous concussions, since repeat injuries take longer to settle.

Typical time out: One to four weeks for most single concussions with a supervised stepwise return, and several months when symptoms persist or when it is a repeat injury within the same season. The range is wide because recovery is judged by symptoms under exertion, not by a fixed calendar.

See a doctor if: Get emergency care straight away for loss of consciousness, repeated vomiting, a worsening headache, seizure, weakness or numbness in an arm or leg, slurred speech, or increasing drowsiness in the hours after the crash.

What helps

• Come off the track immediately and do not race again that day, no matter how quickly you feel normal
• Keep the first day or two quiet but not in a dark room, because strict rest beyond about 48 hours slows recovery
• Reintroduce light aerobic work such as easy spinning on a stationary bike within a few days, staying below the level that clearly worsens symptoms
• Progress through the stepwise stages and only return to gates and jumps after full clearance by a clinician experienced in concussion
• Get imaging only if there are warning signs, since a normal scan does not rule concussion in or out

Shoulder injuries (rotator cuff, dislocations)

The rotator cuff is a group of four tendons that hold the head of the humerus in a shallow socket, and the acromioclavicular joint sits on top where the collarbone meets the shoulder blade. Landing directly on the point of the shoulder sprains or tears the AC joint ligaments, while landing on an outstretched or twisted arm can push the humeral head out of the socket or tear the cuff and the labrum that deepens it.

Symptoms

• Pain deep in the shoulder or over the bony bump on top, worse when you lift the arm away from the body
• Weakness pulling on the bars or pushing the front end up
• A feeling that the shoulder will slip out when the arm is up and rotated back
• Pain lying on that side at night
• A visible step or bump on top of the shoulder after a direct landing

How serious it is: AC joint injuries run from type I, a stretched ligament with no step, through type III, where the collarbone sits clearly higher, and types IV to VI, which are usually operated on. Dislocations are more serious the younger the rider, because the labrum tears and the shoulder tends to come out again.

Typical time out: Two to six weeks for a type I or II AC sprain or a cuff strain, six to twelve weeks after a first dislocation with good rehabilitation, and four to six months after stabilizing or cuff repair surgery. The spread is large because the shoulder has to be reliable under a crash load, not just pain free.

See a doctor if: See a doctor the same day if the shoulder is visibly out of place, if you cannot rotate the arm at all, or if the arm or hand feels numb or weak after the crash.

What helps

• Use a sling only for the first days for comfort, then start moving the arm within a pain adapted range so the joint does not stiffen
• Build the rotator cuff and the scapular stabilizers with progressive resistance, since strength around the joint is what keeps it in place
• Add pulling and pushing strength on the bike position specifically, because the gate start loads the shoulder differently from a gym press
• Ask for imaging when weakness persists past a few weeks or when the shoulder keeps slipping, not routinely on day one
• Treat a corticosteroid injection as an exception rather than a first step: it can reduce pain briefly, but around tendons the longer term outcome tends to be worse

Wrist injuries (sprains, fractures)

The wrist is a stack of eight small carpal bones held together by short ligaments, with the scaphoid on the thumb side taking most of the load. Catching yourself on an outstretched hand compresses this stack, which sprains the scapholunate ligament or cracks the scaphoid or the lower end of the radius. Repeated hard landings on the bars can also irritate the cartilage disc on the little finger side.

Symptoms

• Pain in the hollow at the base of the thumb when you press it
• Swelling across the back of the wrist within an hour of the crash
• Pain when you push down through the hand, for example getting off the floor
• Reduced ability to bend the wrist back to the riding position
• A weak grip when you pull hard on the bars

How serious it is: A sprain that lets you load the wrist within days is mild, while pain right in that thumb side hollow is treated as a scaphoid fracture until proven otherwise, because this bone has a poor blood supply and fails to heal if it is missed. A distal radius fracture that stays in line is far less involved than one that needs to be set.

Typical time out: One to three weeks for a mild sprain, six to twelve weeks in a cast for a scaphoid fracture, and three to six months when the bone does not unite and needs fixation. The range depends almost entirely on whether a small bone is broken, which a first X-ray can miss.

See a doctor if: Get it imaged rather than waiting if pressing the hollow at the base of the thumb is still clearly painful more than a few days after a fall, or if the wrist looks bent like a fork.

What helps

• Get an X-ray for any fall on the hand with focal bony tenderness, and repeat imaging or ask for an MRI if pain persists despite a normal first film
• Use a removable brace for comfort in a simple sprain, but keep the fingers, elbow and shoulder moving
• Rebuild grip and forearm strength progressively before returning to gate starts, since the wrist absorbs the whole start load
• Set the bar and lever angle so the wrist is not held at an extreme extended angle for the whole moto
• Consider wrist guards or taping for support in the first weeks back, while continuing to strengthen rather than relying on the brace

Knee injuries (ACL, meniscus)

The anterior cruciate ligament runs inside the joint and stops the shin bone sliding forward and twisting under the thigh bone, while the menisci are two cartilage wedges that spread load between them. In BMX racing these are damaged when a foot stays on the pedal and the body rotates over a planted leg in a crash, or when a rider lands a jump with the knee bent inward. Direct impact with the frame or bars can also bruise the joint surface.

Symptoms

• A pop or tearing sensation at the moment of the crash
• Rapid swelling of the whole knee within a few hours
• The knee gives way or feels unreliable on turns
• Locking or catching so the leg will not fully straighten
• Pain along the joint line when you squat or twist

How serious it is: Ligament injuries run from grade 1, a stretch with a firm end point, to grade 3, a complete tear with the joint opening up. A small meniscus tear at the outer rim can heal, whereas a large tear that blocks movement usually needs an operation, and an ACL plus meniscus combination is the slowest of all.

Typical time out: Two to six weeks for a grade 1 sprain or a small stable meniscus tear, and nine to twelve months after ACL reconstruction before racing again. The gap is large because a reconstructed ligament needs many months to tolerate the twisting and landing loads of a race track, even when the knee feels good after three months.

See a doctor if: See a doctor within a day or two if the knee swelled up fast, if it locks so you cannot straighten it, or if it gives way when you simply walk.

What helps

• Start moving and loading the knee early within a pain adapted range instead of immobilizing it, since prolonged rest costs quadriceps strength quickly
• Work on quadriceps and hamstring strength and single leg control as the core of rehabilitation, guided by a physical therapist
• Use imaging when the knee swelled immediately, locks, or stays unstable, rather than for every sore knee
• Adjust pedal and crank setup and practice landing with the knee tracking over the foot, not falling inward
• Return through progressive stages, running and hopping before jumps, and only race when single leg landings are symmetrical and confident

Ankle sprains

The classic ankle sprain tears the anterior talofibular ligament on the outer side, sometimes with the calcaneofibular ligament next to it, when the foot rolls under and the sole turns inward. In BMX racing this typically happens when a foot comes off the pedal and touches down at speed, or on a dab in a corner, and less often on a heavy flat landing that squeezes the ligaments between the shin bones.

Symptoms

• Pain and swelling just in front of and below the bony bump on the outside of the ankle
• Bruising that tracks down toward the toes over a day or two
• Difficulty putting full weight on the foot at first
• A feeling of the ankle rolling on uneven ground
• Stiffness pushing the knee forward over the toes

How serious it is: Grade 1 is a stretch with mild swelling and normal walking, grade 2 a partial tear with clear bruising and limping, and grade 3 a complete tear with marked instability. Pain high up the shin above the ankle or over the inner bump points to a different and slower injury than the standard outer sprain.

Typical time out: One to three weeks for a grade 1 sprain, four to eight weeks for grade 2, and up to three months for a grade 3 or a high sprain between the shin bones. Sprains recur often, so the second half of the range is about restoring balance and strength rather than waiting for pain to go.

See a doctor if: Get an X-ray if you cannot take four steps on the foot, or if pressing the back edge of either ankle bone is sharply painful, since that pattern suggests a fracture rather than a sprain.

What helps

• Load the ankle early with weight bearing as pain allows, because early controlled movement gives better results than immobilizing it
• Do balance and proprioception work on one leg, the single most effective measure against a repeat sprain
• Strengthen the peroneal muscles on the outside of the lower leg that resist the rolling movement
• Use a lace up brace or taping for the first months back on the track, especially for practice sessions
• Check shoe and pedal grip, since a foot that slips off the pedal is the usual starting point

Elbow injuries (sprains, dislocations)

The elbow is a tight hinge between the humerus, the ulna and the radius, held by collateral ligaments on each side. A fall on an outstretched arm can lever the joint backward until it dislocates, and the same force often chips the radial head or the tip of the ulna at the same time. Milder crashes stretch the inner collateral ligament or bruise the bony point of the elbow and the bursa over it.

Symptoms

• Immediate severe pain with the arm held bent and guarded
• An obvious deformity at the back of the elbow after a dislocation
• Swelling that makes the joint feel tight and full
• You cannot straighten or fully bend the arm
• Pins and needles in the little finger or the fingertips

How serious it is: A simple sprain settles in weeks, a simple dislocation without fracture usually does well after it is reduced, while a dislocation combined with fractures of the radial head and coronoid is far more serious and generally needs surgery to stay stable.

Typical time out: Two to four weeks for a sprain or a bruised bursa, six to twelve weeks after a simple dislocation, and three to six months when fractures are involved or the joint is operated on. Elbows stiffen faster than most joints, so the later part of the range is often about regaining full extension.

See a doctor if: Treat a visibly deformed elbow as an emergency, and go the same day if the hand is numb, cold or pale, since the nerves and the artery run right past the joint.

What helps

• Never try to put a dislocated elbow back yourself, get it X-rayed and reduced by a clinician
• Come out of the sling early and start gentle active movement within days, because a long period of immobilization is the main cause of permanent stiffness
• Work on full extension deliberately in rehabilitation, since the last few degrees are the hardest to recover
• Build grip and forearm strength before loading the arm in gate starts
• Wear elbow pads in practice, which will not prevent a dislocation but does prevent most of the bursa and skin damage

Hand injuries (fractures, sprains)

The hand takes the crash through the metacarpals, the long bones in the palm, and through the small ligaments at the base and sides of each finger. Hitting the ground with a closed fist on the bars breaks the neck of a metacarpal, while a finger caught in the bars or levers gets bent sideways and sprains a collateral ligament or the thumb ligament at the base. The thumb ligament injury is the one most often underestimated.

Symptoms

• Pain and swelling across the back of the hand rather than at one joint
• A knuckle that looks sunken compared with the other hand
• A finger that sits rotated or crosses over its neighbor when you make a fist
• Pain gripping the bar or pinching between thumb and index finger
• Swelling and bruising along one side of a finger joint

How serious it is: Undisplaced metacarpal fractures and mild finger sprains are treated with buddy taping or a splint, while any rotation of a finger, an angle at the knuckle or a complete tear of the thumb base ligament usually needs to be fixed, because grip on the bars will otherwise stay unreliable.

Typical time out: Two to four weeks for a finger sprain, four to eight weeks for a metacarpal fracture, and eight to twelve weeks or more after thumb ligament surgery. The range is set by whether the injury lets you grip the bars fully, which is what decides racing rather than pain alone.

See a doctor if: Get it seen the same week if a finger looks rotated or angled, if the thumb feels loose when you pinch, or if a knuckle wound came from contact with anything dirty on the track.

What helps

• Buddy tape a sprained finger to the one beside it and keep moving it rather than splinting it rigidly for weeks
• Get an X-ray for any hand that stays swollen and painful across the knuckles after two or three days
• Start controlled grip and finger movement early, since hand joints stiffen quickly
• Rebuild grip endurance before racing, because a hand that fatigues mid moto is how riders lose the bars
• Use gloves that fit and check the lever position so fingers are not trapped between lever and grip in a crash

Back injuries (muscle strains, herniated discs)

Most BMX back pain comes from the muscles and small facet joints of the lumbar spine, which work hard to hold a flexed, braced position through pumping and jumping. A disc herniation is different: the soft center of the disc pushes through its outer ring and irritates a nerve root, usually after repeated loaded flexion or a single heavy compression landing. Repeated hard landings can also cause a stress reaction in the bony bridge at the back of a vertebra.

Symptoms

• A band of pain and tightness across the lower back after riding
• Spasm that makes it hard to stand up straight after getting off the bike
• Pain running down one leg past the knee, with pins and needles or numbness
• Pain that increases when you sit for a long time or bend forward
• Weakness lifting the foot or pushing off on one side

How serious it is: A simple muscle strain settles within weeks and stays in the back. Pain that travels below the knee with numbness suggests nerve involvement and takes much longer, and a stress reaction in the vertebra needs a definite break from impact rather than a training tweak.

Typical time out: One to three weeks for a muscle strain, six weeks to three months for a disc herniation with nerve symptoms, and three months or more for a bony stress injury or after surgery. Nerve symptoms improve on their own in most cases, but slowly, which is why the range is so wide.

See a doctor if: Get urgent care for numbness around the saddle area, loss of bladder or bowel control, or increasing weakness in a leg, and see a doctor for back pain with fever or pain that wakes you at night at rest.

What helps

• Keep moving and return to activity early, because bed rest makes ordinary back pain worse rather than better
• Build trunk and hip strength progressively, especially hip extension and anti rotation work, instead of doing endless isolated abdominal exercises
• Manage load: cut the number of big landings for a period rather than stopping riding altogether
• Check bike fit and the standing position, since a saddle or bar height that forces extra flexion adds load every lap
• Reserve imaging for pain with nerve symptoms, a suspected stress injury or pain that does not improve over about six weeks, since scans often show disc changes that are not the cause

Hip injuries (strains, dislocations)

The hip is a deep ball and socket joint, so a true dislocation takes a large force such as the thigh being driven backward while the knee is bent in a crash. Far more common are strains of the hip flexors at the front and the adductors at the inner thigh, which work hard through gate starts and pedaling out of the gate, and contusions of the bony point of the hip from a direct landing.

Symptoms

• Sharp groin or front of hip pain during the first hard pedal strokes
• Deep ache in the groin after long sessions
• Pain and a dead feeling over the bony point of the hip after a direct landing
• Clicking or catching deep in the joint when you lift the knee
• The leg feels shortened and turned inward and you cannot move it after a heavy crash

How serious it is: Strains follow the usual grade 1 to 3 scale, from a painful stretch to a complete tear with a palpable gap and heavy bruising. A hip dislocation is a genuine emergency, because the blood supply to the femoral head is at risk if it is not reduced quickly.

Typical time out: Two to six weeks for a grade 1 or 2 flexor or adductor strain, three months or more for a complete tear or a tendon that pulls off its attachment, and three to six months after a dislocation. Groin strains recur often, so returning at the first pain free week is usually too early.

See a doctor if: Call emergency services for a leg that is fixed in a turned in position and cannot be moved after a crash, and see a doctor for groin pain with numbness or with inability to bear weight.

What helps

• Load the adductors progressively with exercises such as the Copenhagen adduction, which reduces groin problems in athletes
• Strengthen hip flexors through their full range rather than only stretching them
• Increase gate start volume gradually, because a sudden block of starts is a common trigger
• Use short periods of cooling for pain in the first hours after a contusion, then move the joint gently
• Get imaging if you felt a pop with immediate loss of power, which can mean a tendon has pulled off the bone

Facial injuries (bruises, fractures)

The face is protected by a full face helmet in racing, but injuries still happen when the chin bar is loaded hard, when a rider is hit by another bike, or when a helmet is not full face. The bones that break most easily are the nose, the thin floor of the eye socket and the cheek bone, and the teeth and lips are exposed if the chin bar is displaced.

Symptoms

• Swelling and bruising around the eye or across the cheek
• Double vision or a blurred edge when you look up
• A nose that looks bent or blocked on one side
• Numbness across the cheek, upper lip or gum
• Teeth that no longer meet together properly when you bite

How serious it is: Bruising and a superficial cut settle on their own. A displaced nasal bone should be reset within about a week or two before it sets, and a fracture involving the eye socket or a jaw that no longer closes correctly is treated as a surgical problem.

Typical time out: One to two weeks for soft tissue bruising, three to six weeks after a reset nose, and six to twelve weeks after fixation of an eye socket or cheek fracture. The longer end is about protecting healing bone from a second impact rather than about pain.

See a doctor if: Get seen the same day for double vision, numbness of the cheek, a bite that no longer lines up, clear fluid running from the nose, or a bleed that does not stop with pressure.

What helps

• Have a doctor assess vision, eye movement and bite alignment rather than judging by swelling
• Use short cooling periods for pain and swelling in the first hours
• See a dentist immediately for a knocked out tooth, keeping it in milk or saliva, since replanting is time critical
• Replace the helmet after any impact to the chin bar, since the shell has already absorbed its crash
• Wear a mouthguard if you have had dental damage before

Rib injuries (bruises, fractures)

Ribs are thin curved bones connected to the breastbone by cartilage, and they move with every breath. A landing on the bar end, the saddle nose or the edge of a berm bruises the rib and the muscles between the ribs, or cracks the bone itself. Because breathing never stops, a rib injury is painful continuously, unlike a limb injury that can be rested.

Symptoms

• Sharp pain in one spot on the chest wall when you breathe in deeply
• Pain when you cough, laugh, sneeze or roll over in bed
• Tenderness right on the bone when you press it
• Shallow breathing because a full breath hurts
• Bruising over the chest wall a day or two later

How serious it is: A single cracked rib or a bruise is painful but heals on its own. Several ribs broken in a row, or any rib injury with breathlessness, is more serious, because a broken rib can puncture the lung or be accompanied by bleeding inside the chest.

Typical time out: Three to six weeks for a bruise or a single crack before racing again, and six to twelve weeks when several ribs are involved. The range depends on how quickly a deep breath and a hard sprint stop hurting, since you cannot race while breathing shallowly.

See a doctor if: Get emergency care for shortness of breath, coughing up blood, pain in the left shoulder tip after a fall onto the ribs, or dizziness, since these suggest injury to the lung, spleen or liver rather than to the bone alone.

What helps

• Take breaks with slow deep breaths several times an hour, which prevents the chest infection that shallow breathing causes
• Control pain well enough to breathe fully, since good pain relief is what protects the lungs here
• Do not strap or bind the chest tightly, because that restricts the breathing you need
• Keep walking and doing light activity, and add easy spinning once a deep breath is tolerable
• Return to jumps last, when a hard landing no longer produces a catch of pain in the chest

Neck injuries (strains, fractures)

Most neck injuries in BMX are strains of the muscles and sprains of the small facet joint capsules, caused by the head being whipped forward or sideways in a crash while a helmet adds weight and leverage. A far less common but far more serious injury is a fracture or dislocation of a cervical vertebra, typically after landing on the top of the head with the neck compressed.

Symptoms

• Stiffness and pain across the back of the neck that is often worse the next morning
• Pain turning the head to one side or looking up
• Headache starting at the base of the skull
• Pain, pins and needles or weakness running into an arm
• Muscle spasm holding the head slightly to one side

How serious it is: A strain hurts across the muscles and settles over days to weeks. Midline tenderness right on the spine, pain radiating into an arm, or any numbness or weakness after a crash shifts this into the category where a fracture must be excluded before anything else.

Typical time out: One to three weeks for a muscle strain, six weeks to three months for a nerve irritation, and three months or much longer after a vertebral fracture, decided entirely by the clinician managing it. The range is wide because the same crash can produce a stiff neck or a spinal injury.

See a doctor if: Do not move a rider who has neck pain plus numbness, weakness or an altered level of consciousness after a crash, call emergency services and keep the head still.

What helps

• Get imaging first for midline bone tenderness, arm symptoms or a high energy crash, before starting any treatment
• Keep the neck moving gently within a comfortable range for a simple strain, and avoid a soft collar beyond the first day or two
• Strengthen the neck and upper back progressively, since a stronger neck handles helmet weight and impact better
• Use short cooling or heat for symptom relief, whichever you find more comfortable
• Check helmet weight and fit, because a loose or heavy helmet increases the load on the neck in every impact

Head injuries (concussions)

Beyond concussion, a head impact can fracture the skull or cause bleeding between the brain and the skull, which builds up over minutes to hours. A helmet reduces these severe injuries substantially, but a helmet that is loose, the wrong size or already damaged from a previous crash performs much worse than it looks. Any impact to the head in a race is assessed for both the immediate injury and the delayed bleed.

Symptoms

• A headache that gets steadily worse over the hours after the crash instead of easing
• Repeated vomiting
• Increasing drowsiness or difficulty waking the rider
• Confusion, agitation or unusual behavior noticed by others
• Blood or clear fluid coming from the nose or an ear

How serious it is: The dividing line is between a concussion, where the brain scan is normal and recovery is symptom driven, and a structural injury with a fracture or a bleed, which is managed in hospital and can be life threatening within hours even if the rider walked away from the crash.

Typical time out: One to four weeks for an uncomplicated concussion and several months after a structural head injury, with return decided by the treating clinician. Any rider with a bleed or a fracture needs an individual decision about racing again rather than a general timeline.

See a doctor if: Call emergency services for loss of consciousness, seizure, repeated vomiting, unequal pupils, weakness on one side, or a rider who becomes progressively harder to rouse.

What helps

• Remove the rider from the meeting for the day after any head impact with symptoms, with no exceptions for finals
• Arrange observation for the following 24 hours by someone who can get help if the rider deteriorates
• Use imaging when there are warning signs or a high energy mechanism, guided by a clinician rather than requested by default
• Replace the helmet after any significant impact and check that the replacement fits without moving on the scalp
• Follow a stepwise return over days, adding exertion, then skills, then contact with the track, and stop a stage if symptoms return

Cuts and abrasions (from crashes or contact with the bike)

Sliding across a dirt or asphalt start ramp scrapes away the outer layers of skin, and chainrings, pedal pins and brake levers cut deeper into the skin and fat below. The wounds are almost always contaminated with track dirt, which is why infection, not the wound size, is the main issue. Deep cuts over a joint can also reach a tendon or the joint capsule itself.

Symptoms

• Raw stinging skin over a wide area, often on the hip, forearm or shin
• Grit visibly embedded in the wound
• Bleeding that stops with pressure in a scrape but keeps going in a deeper cut
• Increasing redness, warmth and throbbing over the next day or two
• Yellow discharge or a fever, which means infection

How serious it is: A scrape through the top layers heals in one to two weeks without a scar, a deeper abrasion into the dermis takes longer and can scar, and a cut that gapes open, will not stop bleeding or reaches fat or tendon needs closing within hours.

Typical time out: A few days to two weeks for a typical abrasion, mostly limited by pain against clothing and by keeping the wound clean, and two to four weeks when a cut has been stitched over a joint that has to bend to ride.

See a doctor if: See a doctor if you cannot get all the grit out, if the wound gapes or reaches fat, if redness spreads outward from the edge, or if you develop a fever with swelling around the wound.

What helps

• Wash the wound properly with running water and remove every piece of grit, because dirt left in the skin causes both infection and permanent tattooing
• Keep the wound covered and moist with a dressing rather than letting it dry into a hard scab, which heals faster and scars less
• Change the dressing when it leaks or lifts, and check the edges each time for spreading redness
• Check that your tetanus vaccination is current for any dirty wound
• Protect the new skin from sun for several months, since fresh scar tissue darkens permanently

Dehydration

Dehydration is a loss of body water and salt that is not replaced, which reduces blood volume and makes the heart work harder for the same effort. BMX race days are long, with a warm up, several motos and finals spread over hours in full kit, helmet and long sleeves, which traps heat and drives sweat losses even when the individual efforts are short.

Symptoms

• Thirst and a dry mouth that keeps coming back between motos
• Dark urine or going noticeably less often through the day
• Headache and heavy legs later in the meeting
• Dizziness when you stand up quickly
• Cramping in the calves or thighs during a late moto

How serious it is: Mild dehydration causes thirst and reduced performance and corrects itself with drinking. It becomes serious when there is confusion, fainting, a racing pulse at rest or no urine output, at which point fluids by mouth may not be enough.

Typical time out: Hours for a mild case corrected between motos, and a full day or more if you finished the day dizzy and cramping. Recovery takes longer than most riders expect, because replacing both water and salt takes several hours after a heavy sweat loss.

See a doctor if: Get medical help if a rider is confused, faints, stops sweating, or cannot keep fluids down.

What helps

• Drink to a plan across the day rather than only when thirsty, and check urine color as a rough guide
• Include sodium in your drinks on hot race days, because water alone does not replace what sweat removes
• Take the jersey and helmet off between motos in the shade so heat can escape
• Weigh yourself before and after a hot training day to learn your own sweat rate, then drink accordingly
• Rehydrate steadily over the evening after racing instead of drinking a large volume all at once

Heat exhaustion/heat stroke

Heat exhaustion happens when the circulation cannot both cool the skin and supply the working muscles, so blood pressure falls and the rider feels faint and sick. Heat stroke is the next stage, where core temperature climbs past the point at which the brain functions normally, and it is a medical emergency. Full face helmets, long sleeves, body armor and hot start ramps make BMX meetings a high risk setting.

Symptoms

• Heavy sweating with cool clammy skin and weakness in heat exhaustion
• Nausea, headache and dizziness that get worse when you stand
• Muscle cramps and a rapid pulse
• Confusion, aggression, slurred speech or stumbling, which point to heat stroke
• Hot skin with sweating that has stopped, together with collapse

How serious it is: Heat exhaustion resolves with cooling and fluids and leaves no lasting damage. Heat stroke is defined by a disturbance of the nervous system with a very high core temperature and can be fatal, and survival depends on how quickly the body is cooled.

Typical time out: One to three days after heat exhaustion once you feel normal and are drinking and eating properly, and several weeks under medical guidance after heat stroke. The gap is large because heat stroke can affect the muscles, kidneys and liver and needs those to recover before training again.

See a doctor if: Treat any rider who becomes confused, aggressive, unsteady or unconscious in the heat as a heat stroke emergency, call for help and start cooling immediately.

What helps

• Get the rider into shade, remove helmet, armor and jersey and start cooling straight away with cold water over the whole body
• Give cool fluids only if the rider is fully alert and able to swallow safely
• Do not send anyone back out for a later moto after heat exhaustion on the same day
• Acclimatize over one to two weeks of gradually increasing sessions in the heat before a hot season event
• Plan the race day around the heat: shade, a cooler with ice towels, and cooling during the gaps between motos rather than only afterwards

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 Bmx Racing

• Wear a correctly fitted full face helmet that does not move on the scalp, and retire it after any crash in which it took an impact, since the liner only absorbs one.
• Cover the skin that hits the ground first: long sleeves, gloves, knee and elbow protection reduce the abrasions and bursa injuries that make up much of the routine damage in this sport.
• Session an unfamiliar track in stages, walking it, rolling it and then hitting the jumps at pace, because most crashes come from misjudging a section rather than from a lack of fitness.
• Build gate start and jump volume gradually across weeks, since blocks of starts are what trigger groin, hip flexor and lower back problems.
• Train lower body and trunk strength and single leg landing control through the whole year, and include neck and upper back work, because the helmet loads the neck in every impact.
• Plan hot race days deliberately: shade and helmet off between motos, sodium containing fluids, and cooling in the gaps, because fatigue and heat both raise the chance of a crash in the later rounds.

When to Stop and Get Medical Help

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

• A limb that is visibly bent, shortened or angled, or a bone end that has broken the skin.
• Any head impact followed by loss of consciousness, confusion, repeated vomiting, seizure or increasing drowsiness.
• Neck pain after a crash together with numbness, tingling or weakness in an arm or leg, in which case the rider should not be moved.
• Numbness, a cold or pale hand or foot beyond the injury, which suggests a nerve or blood vessel is compressed.
• A joint that will not move at all, or an inability to put any weight through a leg after a fall.
• Shortness of breath, chest pain, or a rider in the heat who becomes confused, unsteady or collapses.

Sources

• Soligard T et al. 2023, cited in Rockliff C et al., ‘Injuries, Risk Factors, and Prevention Strategies in Bicycle Motocross (BMX): A Scoping Review,’ Sports Health 2025;17(5):965-977

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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