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Home Knowledge Center Wellness Library Kneecap Dislocation

Kneecap Dislocation

Condition Basics

What is kneecap dislocation?

The kneecap (patella) is normally positioned over the front of the knee joint at the base of the thighbone (femur). A kneecap can be dislocated, or moved out of its normal position, when:

  • The inner edge of the kneecap is hit, pushing it toward the outer side of the leg. This can happen more easily if there is patellar tracking disorder (the kneecap is already slightly out of place).
  • The foot is firmly planted pointing outward, and the knee is bent with the thigh turned inward. This kind of injury is common during many sports activities.

What are the symptoms?

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.

How is it diagnosed?

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.

How is kneecap dislocation treated?

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.

How can you care for yourself?

Home care can help you manage your symptoms. For example, don't put weight on your leg until your doctor says it's okay. Prop up your leg and use a cold pack to help reduce swelling. Take an over-the-counter pain medicine like ibuprofen or naproxen. Use a brace or bandage as directed.

Current as of: July 31, 2024

Author: Ignite Healthwise, LLC Staff

Clinical Review Board
All Ignite Healthwise, LLC education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

This information does not replace the advice of a doctor. Ignite Healthwise, LLC, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content.

To learn more about Ignite Healthwise, LLC, visit webmdignite.com.

© 2024-2025 Ignite Healthwise, LLC.

Related Links

Patellar Tracking Disorder

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