Hip impingement occurs when the ball and socket of the hip joint don't fit together properly. The restricted motion damages cartilage and can cause pain and arthritis in young adults.

In some cases, the ball is too misshapen to fit properly into the socket. Sometimes, the exterior edge of the socket extends to the point that it covers too much of the ball. Hip impingement also can be caused by a combination of these two problems.

Most people with hip impingement experience pain in the groin area during or after flexing the hip, as when running, jumping or sitting for a long time. You may also have difficulty flexing your hip beyond a right angle.

Surgery may be required to prevent further hip injury.

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Hip impingement care at Mayo Clinic

July 14, 2020
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  2. Berry DJ, et al. Femoroacetabular impingement. In: Surgery of the Hip. Saunders Elsevier; 2013. https://www.clinicalkey.com. Accessed July 12, 2017.
  3. Femoroacetabular impingement (FAI). American Academy of Orthopaedic Surgeons. http://orthoinfo.aaos.org/topic.cfm?topic=A00571. Accessed July 12, 2017.
  4. AskMayoExpert. Femoral acetabular impingement (adult and pediatric). Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2016.
  5. Krych AJ (expert opinion). Mayo Clinic, Rochester, Minn. July 24, 2017.
  6. Brown AY. Allscripts EPSi. Mayo Clinic, Rochester, Minn. March 30, 2017.


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