CrossFit Injuries: Shoulder, Back, Knee, Rips and Rhabdo

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The clock reads 7:42, the bar is loaded, and the whiteboard says 30 toes-to-bar to finish. Your hands are hot, your shoulders are burning, and the person next to you is already on the rig. This is the moment CrossFit injuries are made, or avoided: the extra round you push through with sloppy form, or the set you break up so the skin on your palms stays put. CrossFit is a great way to get fit at any age, from teens in their first class to masters athletes and Games competitors. It also has a clear pattern of injuries, and one rare but serious warning sign every athlete should know. Here they are, in plain language.

This page is general information, not medical advice. If you’re hurt, see a sports medicine doctor, physical therapist (PT) or certified athletic trainer (AT). For the bigger picture of the sport, start at our CrossFit hub.

How common are CrossFit injuries?

Less common than the internet suggests, but not rare. In one of the first surveys (Weisenthal and colleagues, 2014, 386 US athletes), about 1 in 5 (19.4%) had been injured while doing CrossFit. Most injuries were acute and fairly mild, and athletes whose coaches were involved in correcting form and guiding the workout had fewer injuries. A larger 2020 survey of 3,049 CrossFit athletes found injury rates of roughly 0.2 to 1.3 per 1,000 training hours, and the clearest risk factor was being new to CrossFit: shorter participation came with higher odds of injury. Competing didn’t appear to raise the risk. Reviews also point out that most CrossFit research is surveys and case reports, so treat any single number with care.

The most common CrossFit injuries

Shoulder

The shoulder tops most CrossFit injury lists. In the 2014 survey, shoulder injuries came mostly from gymnastics movements: kipping pull-ups, muscle-ups, handstand push-ups and ring work. A 2022 review of upper-body injuries in CrossFit athletes found shoulder, elbow and wrist injury rates higher than in traditional weight training and closer to elite gymnastics and Olympic lifting. A common problem is irritation of the rotator cuff tendons (shoulder impingement). The American Academy of Orthopaedic Surgeons (AAOS) describes pain at the front and side of the shoulder, pain at night, and trouble reaching overhead. Its first-line care is rest and changing activity (less overhead work), then physical therapy, and recovery can take weeks to months.

Low back

The same survey found the low back was hurt mostly in powerlifting movements: deadlifts, squats and cleans, often late in a workout when fatigue changes form. AAOS says most low back pain from activity is muscle soreness or strain that settles within a few days to a few weeks. Get checked promptly for the warning signs AAOS lists: weakness in the legs, numbness or tingling down to the foot, loss of bladder or bowel control (an emergency), or back pain with fever, chills or unexplained weight loss.

Knee

Squats, wall balls, lunges, box jumps and running all load the knee. Pain around or behind the kneecap that builds over weeks is often patellofemoral pain (“runner’s knee”). AAOS links it to overuse, sudden jumps in training and weak or unbalanced thigh and hip muscles, and notes it hurts most on stairs, when squatting or jumping, and after sitting with bent knees. Physical therapy that strengthens the quadriceps and hips is the usual first step. A pop, fast swelling or a knee that gives way needs a doctor.

Hand rips and wrist pain

A “rip” is a torn callus: the thick skin on your palm catches on the bar during high-rep pull-ups, toes-to-bar or kettlebell swings and tears off. It’s the most CrossFit injury there is, and a systematic review found hand and wrist injuries made up anywhere from 4% to 33% of injuries across CrossFit studies. CrossFit’s own hand-care advice is to file or shave calluses down so they don’t catch, keep skin moisturized (dry skin tears more easily), break up big sets, and use grips or tape on high-volume bar days. If you do rip: wash it with soap and water, trim loose skin, keep it clean and covered, and skip bar work until new skin feels solid. The American Academy of Dermatology says to see a doctor for signs of infection: redness, pus, or pain and swelling that get worse.

Rhabdomyolysis: the warning signs

Rhabdomyolysis (“rhabdo”) is rare, but it’s the injury every CrossFit athlete should be able to recognize. It’s a breakdown of muscle tissue that releases the muscle protein myoglobin into the blood, which can damage the kidneys. MedlinePlus lists severe exertion, extreme heat and severe dehydration among the causes, and CrossFit’s own trainer guide is frank that it can follow high-intensity or high-volume exercise, including CrossFit.

Warning signs (MedlinePlus, Ohio State Wexner Medical Center and CrossFit’s Level 1 guide):

• Dark urine: dark red, brown, tea- or cola-colored.
• Muscle pain far beyond normal soreness: severe, often with swelling and stiffness, typically in the muscles you just hammered (arms after pull-ups, thighs after squats).
• Weakness, nausea, vomiting or stomach cramps.

If these show up after a workout, or you see dark-red or cola-colored urine at any time, get medical care right away. That’s CrossFit’s own advice too. Doctors check a blood test (creatine kinase, CK) and treat with fluids, often through an IV. Symptoms can appear a day or two later, which is why people mistake rhabdo for a bad case of soreness.

Who’s most at risk, according to CrossFit’s guide: people who are already fit from other sports and new to CrossFit, people coming back after a layoff, and experienced athletes who do far more volume or intensity than their usual. Lots of eccentric work (slow lowering), like high-rep jumping pull-ups or full-range GHD sit-ups, raises the risk. So do heavy drinking and certain medications, including statins. Ohio State adds dehydration, sickle cell trait and some metabolic conditions.

Prevention: scale it, then build it

CrossFit’s own rule is “mechanics, then consistency, then intensity”: learn the movement, show you can repeat it well, and only then go fast and heavy. In practice, that means:

• Scale without guilt. Every workout can be scaled (load, reps, movement, range of motion). CrossFit’s trainer guide says several months at scaled loads and volumes is normal, even for very fit newcomers.
• Rest when you need to. The same guide warns against “progressive scaling”, where the weight keeps dropping so an exhausted athlete never stops. It’s fine to stop and breathe.
• Earn the kip. CrossFit recommends a strict pull-up before kipping pull-ups and a strict muscle-up before kipping muscle-ups, to build shoulder strength and stability first. More on this in CrossFit training.
• Train with a coach. Coaching on form was linked to fewer injuries in the 2014 survey, and training at an official affiliate looked protective in the 2020 one.
• Ramp up slowly after time off, drink enough, and go easy on alcohol around hard sessions.
• Look after your hands before they rip, not after.

Head injuries are uncommon in CrossFit, but falls from the rings, a missed box jump or a dropped bar can happen. If anyone may have a concussion, the CDC’s rule is simple: stop for the day and don’t return until a health care provider clears it.

Gear many athletes use

Gear won’t prevent injuries on its own, and none of it replaces scaling or rehab. But plenty of athletes keep these in the gym bag: carbon grips like the Bear KompleX 3-Hole Carbon Grips for high-rep bar days, a hand-care kit like the w.o.d.welder 3 Step Handcare Kit (pumice stone, moisturizing cream and salve) to keep calluses in check, and a 7 mm sleeve like the Rehband RX Knee Sleeve for squat days. For heavy pressing and jerks, see our guide to wrist wraps for CrossFit, and for more sleeves, the best knee sleeves.

When to see a sports medicine doctor, PT or athletic trainer

• Right away (emergency): dark or cola-colored urine, especially with severe muscle pain or swelling; loss of bladder or bowel control; any concussion danger sign; a joint that looks out of place.
• Within a day or two: a pop and swelling in the knee or shoulder, sudden weakness lifting the arm, back pain with numbness or tingling down the leg, or a rip that looks infected.
• Soon: shoulder pain that wakes you at night, knee or back pain that keeps coming back, or pain that changes how you move.

A sports medicine physician diagnoses and decides on tests; a physical therapist builds the rehab and the path back to the barbell and the rig; a certified athletic trainer works with many school and college teams. Tell your coach too, so workouts can be scaled around the injury while you heal. Day-to-day recovery is on our CrossFit recovery page and in our CrossFit recovery routine.

CrossFit injuries: FAQs

Is CrossFit more dangerous than other training?

It depends on the comparison. A 2022 review found upper-body injury rates in CrossFit higher than in traditional weight training and closer to elite gymnastics and Olympic lifting, with the shoulder, low back and knee hurt most overall. The biggest risk factor in a 3,049-athlete survey was being new to CrossFit, which is why scaling and coaching matter so much in the first months.

How do I know if it’s rhabdo or just soreness?

Normal soreness is uncomfortable and slowly gets better. Rhabdo warning signs are muscle pain that’s severe and out of proportion, swelling, weakness, and dark red, brown or cola-colored urine. If you have those, don’t wait: get medical care the same day. Only a blood test can confirm it.

Should I shave my calluses?

CrossFit’s hand-care advice is to file or shave calluses down regularly so they don’t catch on the bar, not to remove them completely, and to keep your hands moisturized. Big, dry calluses are the ones that tear.

Can I train with a ripped hand?

Keep the rip clean and covered and skip bar and kettlebell work until the new skin feels solid; CrossFit suggests scaling and using protection when you come back. Most coaches can swap in movements that don’t load the palm. See a doctor if it gets red, swollen or starts to ooze pus.

Are kipping pull-ups bad for your shoulders?

Gymnastics movements were the main source of shoulder injuries in CrossFit research, and kipping adds speed and force. CrossFit itself recommends being able to do a strict pull-up before kipping. If your shoulder hurts at night or when reaching overhead, get it checked before you keep kipping.