Crushed muscles after a crash can put your kidneys at risk
A trauma clinician and a kidney specialist explain recovery from rhabdomyolysis
When a big area of muscle is badly hurt, the damaged muscle can spill substances into the blood. Doctors call this rhabdomyolysis. It can happen when a crash crushes an arm or leg. Those substances can harm the kidneys. They can also throw off body salts that affect how the heart works. [1, 2]
A trauma clinician cares for the injured tissue. If your kidney function or fluid balance is affected, a kidney specialist steps in to help. [1, 2]
Find out which test results are back to normal
Hospitals often track CK, short for creatine kinase, an enzyme that comes from muscle. They also watch kidney function, how much urine you make and electrolytes, the body salts in your blood. Ask which results came back abnormal and whether they’ve improved. Find out if you need another blood or urine test after you go home. If your kidneys were affected, ask who will check that they’ve recovered. Lighter urine alone doesn’t prove all your tests are normal. [1, 2]
Stick to the plan for fluids and activity
Find out how much fluid to drink. Ask if a heart or kidney condition would change that amount. Review every medicine with your care team, pain relievers and supplements included. Wait for your treating clinician’s OK before going back to exercise, heavy work or hot conditions. Sore, weak muscles can linger after the urgent phase passes. A rehab plan can help you rebuild without overloading tissue that is still healing. [1, 2]
Warning signs of a relapse or complication
Get urgent care for dark urine the color of tea or much less urine than usual. Muscle pain that is severe or getting worse also needs urgent care. So does clear weakness, or an arm or leg that becomes tight and very painful. Each of these needs testing. Emergency care may also be needed for a fresh crush injury or a limb that swells fast. The concern is pressure building up inside the muscles. [1, 2]
Questions about your kidneys and muscles
- Have my kidney function or body salts changed?
- Do I need repeat blood or urine tests, and which ones?
- How much fluid and activity is safe for me?
Keep your latest results in one note
Sources and further reading
This is broad health education drawn from trauma and kidney care. After an injury, severe muscle pain, dark urine or making less urine needs urgent medical attention.
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