A sudden twisting or a blow can cause the kneecap (patella) to move out of its normal position. This is called a dislocation. It can happen because of a sports injury—such as turning suddenly while running—or an accident.
Rest and home treatment can help your child heal and return to normal activity, usually within 3 to 6 weeks. But your child needs to be careful after healing too. Now that the kneecap has been dislocated, it can more easily go out of position again.
Symptoms may include severe pain, swelling, or a popping sensation, followed by a feeling that something is out of place. You may not be able to bend your knee, or it may look misshapen. You may have cool, pale skin or numbness and tingling in or below the affected knee.
Your doctor may recommend pain medicine, home care, and physical therapy to help you heal. The doctor may suggest using a brace (immobilizer) or elastic bandage to support your knee while it heals. In some cases, surgery may be needed.
The doctor will ask about your symptoms and past health and do a physical exam. You may have imaging tests, such as an X-ray, ultrasound, or MRI.
Kneecap dislocation occurs when a sudden twisting or a blow causes the kneecap (patella) to move out of its normal position. This can happen because of an accident or a sports injury, such as turning suddenly while running.
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