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Causes
By Mayo Clinic staffDoctors aren't certain what actually causes patellofemoral pain syndrome, but it's been associated with:
- Overuse. Repetitive stress on your knee joint — such as that sustained during running or jumping sports — may result in patellofemoral pain.
- Poor control of your muscles. Patellofemoral pain can occur when the muscles around your hip and knee don't function well to maintain proper tracking of your kneecap.
- Injury. Trauma to the kneecap, such as a dislocation or fracture, has been linked to patellofemoral pain syndrome.
References
- Frontera WR, et al. Essentials of Physical Medicine and Rehabilitation: Musculoskeletal Disorders, Pain, and Rehabilitation. 2nd ed. Philadelphia, Pa.: Saunders Elsevier; 2008. http://www.mdconsult.com/das/book/body/208746819-6/0/1678/0.html. Accessed Dec. 5, 2012.
- O'Connor FG, et al. Patellofemoral pain syndrome. http://www.uptodate.com/index.html. Accessed Dec. 5, 2012.
- Runner's knee (Patellofemoral pain). American Academy of Orthopaedic Surgeons. http://orthoinfo.aaos.org/topic.cfm?topic=a00382. Accessed Dec. 5, 2012.
- Ferri FF. Ferri's Clinical Advisor 2013: 5 Books in 1. Philadelphia, Pa.: Mosby Elsevier; 2012. http://www.mdconsult.com/books/about.do?eid=4-u1.0-B978-0-323-08373-7..00002-9&isbn=978-0-323-08373-7&about=true&uniqId=343863096-23. Accessed Dec. 5, 2012.
- Laskowski ER (expert opinion). Mayo Clinic, Rochester, Minn. Dec. 6, 2012.
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