17 Common Water Polo injuries (Prevention & Treatment)

The water polo injuries that come up most: rotator cuff and labrum damage, broken fingers, eye injuries, wrist sprains and concussions.

Wrestling for position underwater causes much of it, so cuts, abrasions and tennis elbow round out the list, each with its causes and prevention pointers plus answers to common player questions.

Protect yourself from the fear of the unknown and gain knowledge on how to prevent water polo injuries to keep you safe underwater.

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
Across 8,904 player matches at Olympic Games and FINA World Championships, water polo injuries occurred at an average of 56.2 injuries per 1,000 match hours.	Elite international water polo players, men and women, 8,904 player matches, Olympic Games 2004, 2008, 2012, 2016 and FINA World Championships 2009, 2013, 2015, 2017; published 2019	British Journal of Sports Medicine, Mountjoy M, Miller J, Junge A
The most frequent diagnoses in elite water polo matches were laceration of the head at 12.7 percent and contusion of the head at 10.9 percent.	Elite international water polo players at Olympic Games and FINA World Championships, 2004 to 2017, published 2019	British Journal of Sports Medicine, Mountjoy M, Miller J, Junge A
A quarter of elite water polo match injuries, 25.4 percent, were expected to keep the player out of training or matches.	Elite international water polo players at Olympic Games and FINA World Championships, 2004 to 2017, published 2019	British Journal of Sports Medicine, Mountjoy M, Miller J, Junge A
Among sub-elite water polo players the shoulder was the most frequently injured site and accounted for 25 percent of lost training days, with 67 percent of shoulder injuries caused by overuse.	80 sub-elite water polo players, Australia, Self-reported 2009 to 2013 and physiotherapist-reported 2014 to 2016, published 2019	Physical Therapy in Sport, Hams A et al., Epidemiology of shoulder injury in sub-elite level water polo players
A systematic review of 20 studies found reported shoulder injury rates in water polo ranging from 24 to 51 percent of players.	Water polo players across 20 included studies, Systematic review published 2018	Journal of Science and Medicine in Sport, Miller AH et al., Shoulder injury in water polo: A systematic review of incidence and intrinsic risk factors

Overview

Injury	Body area	Typical time out
Shoulder injuries (rotator cuff, labrum)	Shoulder	6 to 12 weeks, 4 to 6 months post-op
Hand injuries (fractures, dislocations)	Hand and fingers	2 to 8 weeks, longer after surgery
Eye injuries (from ball impact or underwater contact)	Eye	2 to 7 days, weeks if serious
Wrist injuries (sprains, strains)	Hand and wrist	1 to 8 weeks, 3 months or more if torn
Head injuries (concussions)	Head	1 to 4 weeks, stepwise return
Cuts and abrasions (from physical contact)	Skin	0 to 10 days, longer if infected
Elbow injuries (tennis elbow)	Elbow	6 weeks to 6 months of managed load

Shoulder injuries (rotator cuff, labrum)

The shooting arm loads the four rotator cuff tendons, above all supraspinatus and infraspinatus, plus the ring of cartilage around the socket called the labrum. In water polo the arm is cocked back with no ground contact, so the trunk cannot help and the shoulder muscles alone brake the throw, while eggbeater treading and sprint swimming keep the same tendons working between shots. Repeated maximum external rotation pinches the cuff against the socket rim and can fray the upper labrum where the biceps tendon attaches.

Symptoms

Pain deep in the front or side of the shoulder when you cock the arm back to shoot.
The throw loses speed and you start aiming with the elbow lower than usual.
Aching at night, especially lying on that side.
A catching or clicking feeling when the arm passes overhead.
Trouble reaching behind your back or into a jacket sleeve.

How serious it is: Mild cases are a tendinopathy: the tendon is irritated and painful under load but still works. Severe cases are a partial or full tear of the cuff, or a labral tear with the shoulder feeling loose and slipping, which usually means imaging and often surgery.

Typical time out: Six to twelve weeks for tendinopathy managed with a structured strength program, three weeks or so for a simple irritation caught early, and four to six months after labral or cuff repair. The spread is wide because a tendon that hurts only at the end of practice recovers far faster than one that has torn, and because throwing volume must be rebuilt gradually either way.

See a doctor if: See a doctor if you cannot lift the arm against gravity at all, if the shoulder slips out of place, or if the pain wakes you every night for more than two weeks.

What helps

Cut throwing volume and shot intensity first, rather than stopping all training: keep legs and trunk work going.
Progressive loading of the rotator cuff and the muscles that hold the shoulder blade down and back, external rotation and rowing patterns, three times a week.
Fix the cocking position with a coach so the elbow stays at shoulder height and the trunk rotates into the shot.
Physical therapy from the start if the throw has lost power or the arm feels unstable.
Imaging if six weeks of consistent loading changes nothing, or immediately with weakness. A cortisone injection may quiet pain briefly but tends to leave tendons worse in the long run, so it stays an exception.

Hand injuries (fractures, dislocations)

The ball or an opponent’s hand strikes a finger end-on and drives the small joint out of place or cracks one of the metacarpal or phalangeal bones. Blocking a shot with a straight finger and grabbing at a wrist under water are the two classic mechanisms, since the finger takes the force at an angle the collateral ligaments cannot resist.

Symptoms

Immediate sharp pain and rapid swelling in one finger.
The finger sits crooked, rotated, or points off line when you make a fist.
You cannot bend or straighten the joint fully.
Bruising that spreads into the palm or back of the hand over a day.
Gripping the ball is painful or simply not possible.

How serious it is: A jammed joint with an intact ligament settles in a couple of weeks. A dislocation that has been put back needs splinting and checking, and a fracture that is displaced or rotated, or one that runs into the joint surface, needs a hand specialist and sometimes wires or a plate.

Typical time out: Two to four weeks for a jammed finger with taping, four to eight weeks for a stable fracture in a splint, and eight to twelve weeks or more if the fracture was displaced and fixed surgically. Timing depends less on pain than on when the bone is stable enough to take a ball impact again.

See a doctor if: Any visible deformity, a finger that rotates or crosses its neighbor when you bend it, numbness, or a joint you cannot move at all needs an X-ray the same day.

What helps

Get an X-ray before assuming it is only jammed: a rotated or intra-articular fracture treated as a bruise heals crooked.
Buddy taping to the neighboring finger for stable injuries, which protects sideways force while allowing motion.
Start gentle bending and straightening early once the injury is stable, because stiffness is the main long-term problem in fingers.
Brief cooling in the first hours for pain, then keep the hand moving and elevated rather than immobile.
Hand therapy if the joint is still stiff or swollen after three to four weeks.

Eye injuries (from ball impact or underwater contact)

A shot at close range or a stray hand under water strikes the eyeball directly. The cornea can be scratched by a fingernail, and blunt force from the ball can bruise the eye, bleed into the front chamber, or in rare cases damage the retina or crack the bone of the orbit. Nothing protects the eye during play, since goggles are not worn in matches.

Symptoms

Sharp pain and the feeling that something is stuck in the eye.
Watering, light sensitivity, and difficulty keeping the eye open.
Blurred vision, or a dark shadow or curtain in part of the field of view.
Flashes of light or a sudden shower of floaters.
Visible redness or blood pooling in front of the iris.

How serious it is: A corneal abrasion is painful but usually heals in a few days. Blood in the front chamber, a change in the shape of the pupil, double vision, or any loss of vision points to a serious injury and is an emergency.

Typical time out: Two to seven days out of the water for a simple corneal scratch, and several weeks with an eye specialist deciding the return date after bleeding inside the eye or a retinal injury. The chlorinated pool water itself is a reason to stay out until the surface has healed.

See a doctor if: Any change in vision, flashes, a curtain across the field of view, blood in the eye, or a pupil that looks the wrong shape means the same day in an emergency department.

What helps

Stop play and do not rub the eye, since rubbing turns a scratch into a deeper defect.
Rinse gently with clean water or saline if something is in the eye, and cover without pressure if the eye may be penetrated.
Have it examined by an eye specialist rather than a general check when vision is affected at all.
Follow the prescribed antibiotic drops and stay out of the pool until you are cleared, because pool water carries infection risk into a damaged cornea.
Wear swim goggles in training drills where close-range shooting is practiced.

Wrist injuries (sprains, strains)

Controlling the ball on one hand loads the ligaments that hold the small carpal bones together, above all the scapholunate ligament, and the tendons that run across the back and thumb side of the wrist. Catching a hard pass forces the wrist backward, while the flick at the end of a shot repeats a fast wrist snap under load.

Symptoms

Pain on the thumb side or in the middle of the back of the wrist when you catch or shoot.
Swelling that makes the wrist feel thick and stiff.
Weak grip: the ball slips out of the palm.
A click or clunk when you rotate the wrist.
Discomfort pushing up out of the pool or off the floor.

How serious it is: Grade 1 is a stretched ligament with pain but a stable wrist, grade 2 a partial tear with more swelling and instability, grade 3 a complete tear that changes how the carpal bones sit. Pain right in the hollow at the base of the thumb must be treated as a possible scaphoid fracture until an X-ray says otherwise.

Typical time out: One to three weeks for a grade 1 sprain, four to eight weeks for a grade 2, and three months or more for a complete ligament tear or a scaphoid fracture, since that bone has a poor blood supply and heals slowly. Return depends on tolerating one-handed ball control, not just on pain at rest.

See a doctor if: Tenderness in the hollow at the base of the thumb, numbness in the fingers, or a wrist you cannot turn needs an X-ray, since scaphoid fractures are missed easily and heal badly when ignored.

What helps

Reduce shooting and one-handed ball drills for a week or two while keeping swimming volume where it does not hurt.
Support with a wrist brace or taping for hard passing sessions during the return, not permanently.
Grip and forearm strength work, including wrist extension and rotation, once acute pain settles.
Brief cooling in the first hours for pain if it helps you keep the wrist moving.
X-ray or further imaging if there is thumb-side bone tenderness, or if pain persists past three to four weeks.

Head injuries (concussions)

An elbow, a knee, or a ball at shot speed hits the head and the brain moves inside the skull, causing a temporary disturbance of brain function rather than structural damage visible on a normal scan. In water polo these hits usually happen in the wrestling around the center forward and in blocked shots at close range, which is also why cuts and bruises to the head are the most frequent diagnoses in elite matches.

Symptoms

Headache or a feeling of pressure that starts within minutes of the hit.
Dizziness, feeling slowed down, or being unsure of the score or the situation.
Nausea, sensitivity to light or noise.
Blurred or double vision.
Being irritable, foggy, or sleeping badly in the days afterward.

How serious it is: Most concussions settle within days to a few weeks. Loss of consciousness, repeated vomiting, worsening headache, seizures, or symptoms that grow rather than fade suggest a more serious brain injury and are an emergency.

Typical time out: Typically one to four weeks, following a stepwise return with light aerobic work first and full contact last, but symptoms lasting beyond a month mean specialist assessment. Recovery is slower after a previous concussion, which is why every hit needs to be documented.

See a doctor if: Get emergency care for loss of consciousness, a seizure, repeated vomiting, a headache that keeps getting worse, weakness or numbness on one side, or increasing confusion.

What helps

Out of the water immediately and no return the same day, even if symptoms fade within minutes.
Rest relatively for the first day or two, then start light activity such as walking or easy cycling as symptoms allow, since prolonged total rest delays recovery.
Medical clearance before contact, with a graded return: aerobic work, then sport-specific swimming, then non-contact drills, then full play.
Avoid alcohol and heavy screen sessions in the first days and protect sleep.
Specialist referral if headache, dizziness, or concentration problems persist beyond about four weeks.

Cuts and abrasions (from physical contact)

Fingernails, teeth, elbows, and the pool edge break the skin, most often on the head, face, and forearms where players grapple. Skin softened by long immersion tears more easily, and head lacerations are the single most common diagnosis recorded in elite water polo matches.

Symptoms

Bleeding that is obvious once you leave the water, since it is diluted while swimming.
Stinging or burning at the site.
A gaping edge to the wound rather than a clean line.
Increasing redness, warmth, or throbbing over the following days.

How serious it is: A superficial scrape needs cleaning and covering only. A cut that gapes open, goes through the full thickness of the skin, or sits on the face or eyelid needs closure within a few hours to heal cleanly.

Typical time out: Usually none to a few days for an abrasion, and roughly five to ten days out of the pool for a sutured cut so the wound is closed before it goes back into chlorinated water. Any wound that becomes infected extends this until it is treated.

See a doctor if: See a doctor for bleeding that will not stop with pressure, a wound that gapes or is deeper than the skin, a bite, or spreading redness and fever in the days afterward.

What helps

Direct pressure with a clean cloth until bleeding stops, then rinse with clean water or saline.
Skip alcohol and hydrogen peroxide on the wound, which damage healing tissue.
Cover with a waterproof dressing before returning to the pool and change it after each session.
Get deep or gaping cuts closed within a few hours, especially on the face.
Keep nails cut short across the squad, which is the simplest way to reduce these injuries at all.

Elbow injuries (tennis elbow)

Lateral epicondylalgia is a degenerative change in the common extensor tendon where the forearm muscles attach to the bony point on the outside of the elbow, above all extensor carpi radialis brevis. Gripping a wet ball on one hand and snapping the wrist through every pass and shot loads that attachment repeatedly, and the same tendon works to stabilize the wrist while sculling.

Symptoms

Pain on the bony point on the outside of the elbow, sometimes spreading into the forearm.
Pain when gripping the ball, shaking hands, or lifting a cup.
Tenderness if you press that spot.
Stiffness in the elbow in the morning that eases with movement.
Weakness in grip without any weakness in the shoulder.

How serious it is: Mild cases hurt only during and after throwing and settle with load management. Persistent cases hurt with everyday gripping and can last many months, and pain on the inside of the elbow instead points to the flexor tendon, a different problem.

Typical time out: Rarely a complete break from the sport: expect six weeks to six months of managed load, with the throwing volume reduced rather than stopped. The range is wide because tendon pain that has been present for months responds much more slowly than a flare-up caught in its first weeks.

See a doctor if: See a doctor if the elbow locks, will not straighten, is swollen and hot, or if numbness and tingling run into the ring and little finger, which suggests a nerve rather than the tendon.

What helps

Reduce throwing volume to a level that gives no more than mild pain that settles within a day, instead of resting completely.
Progressive strength work for the wrist extensors, starting isometric and moving to slow eccentric loading, done daily over months.
Strengthen the shoulder and shoulder blade too, since a tired shoulder shifts work onto the forearm.
A forearm strap for training sessions can reduce pain enough to keep loading properly.
Physical therapy if it has lasted more than six weeks. Cortisone injections relieve pain briefly but leave outcomes worse at a year in tendinopathy, so they are a last resort rather than a first step.

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 Water Polo

Count shots, not just pool time. Keep a rough record of hard throws per session and per week, and raise it slowly rather than doubling it in the run-up to a tournament.
Keep a year-round strength program for the rotator cuff and the shoulder blade muscles, since the shoulder is the most injured site in water polo and most of those injuries come from overuse rather than a single collision.
Train the eggbeater and the trunk so the shot is driven by hip and trunk rotation out of the water, which reduces the share of the work the shoulder has to do alone.
Cut fingernails short before every match and check them as a team, because most head and face lacerations come from nails, and head wounds are the most common diagnosis in elite play.
Rotate goalkeepers and center forwards through drills rather than leaving one player in the contact position for a whole session, and coach legal hand position so blocks do not land on faces.
Treat any shoulder pain that lasts more than a week as a training problem, not a nuisance: reduce throwing and get it assessed while it is still only a tendon irritation.

When to Stop and Get Medical Help

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

A head impact followed by confusion, loss of consciousness, repeated vomiting, or a worsening headache.
Any change in vision after a ball or hand hits the eye, including flashes, a shadow across the field of view, or blood in the eye.
A visible deformity, a finger or limb that sits at the wrong angle, or a joint that cannot be moved at all.
Numbness, tingling, or weakness in an arm or hand after a collision or a neck impact.
A shoulder that has slipped out of place, or an arm that cannot be lifted against gravity.
Bleeding that does not stop with several minutes of firm pressure, or a wound that gapes open.

Sources

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.

Frequently Asked Questions

How common are injuries in water polo training and matches?

In elite competition the rate is measurable: across 8,904 player matches at the Olympic Games and FINA World Championships, injuries occurred at an average of 56.2 per 1,000 match hours, and about a quarter of them, 25.4 percent, were expected to keep the player out of training or matches. The pattern differs between match and training, though. Match injuries are dominated by contact to the head, with laceration of the head at 12.7 percent and contusion of the head at 10.9 percent the most frequent diagnoses. Training injuries are mostly overuse, above all in the shoulder, where a systematic review of 20 studies reported shoulder injury rates from 24 to 51 percent of players.

Why does my elbow hurt after water polo, and what should I do about it?

Pain on the bony point on the outside of the elbow after throwing is usually lateral epicondylalgia, an irritation of the tendon where the forearm extensor muscles attach. Gripping a wet ball one-handed and snapping the wrist through each shot loads that attachment on every throw. Reduce throwing volume to a level that leaves only mild pain settling within a day, start progressive wrist extensor strengthening, and add shoulder and shoulder blade work, because a fatigued shoulder pushes more work down into the forearm. If pain runs into the ring and little finger or the elbow will not straighten, get it looked at rather than training through it.

How long does a water polo shoulder injury keep you out?

A tendinopathy caught early, where the shoulder only hurts at the end of practice, often settles within about six to twelve weeks of reduced throwing plus a structured strength program. A labral or rotator cuff repair means roughly four to six months before full throwing. The number that matters is not the calendar but whether you can throw at full effort without pain the next morning, so the return is built by raising shot volume in steps rather than by a fixed date.

How can water polo players prevent shoulder problems?

Shoulder trouble in water polo is mostly an overuse problem: among sub-elite players the shoulder was the most frequently injured site, accounted for 25 percent of lost training days, and 67 percent of those shoulder injuries were caused by overuse rather than contact. That makes throwing volume the main lever. Count hard throws per week and raise them gradually, keep rotator cuff and shoulder blade strengthening in the program all year rather than only in rehab, and use the trunk and legs to drive the shot. Treat pain lasting more than a week as a signal to reduce load, not to push through.

Do you need to stop playing after a knock to the head in water polo?

Yes. If a concussion is suspected after an elbow, a knee, or a shot to the head, the player leaves the water and does not return that day, even if the headache or dizziness fades within minutes. Have them assessed medically, then return in graded steps: light aerobic work, sport-specific swimming, non-contact drills, and only then full play with contact. Get emergency care straight away for loss of consciousness, repeated vomiting, a worsening headache, a seizure, or growing confusion.