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Definition
By Mayo Clinic staff
Knee bursitis is inflammation of a bursa located near your knee joint. A bursa is a small fluid-filled, pad-like sac that reduces friction and cushions pressure points between your bones and the tendons and muscles near your joints.
Each of your knees has 11 bursae. While any of these bursae can become inflamed, knee bursitis most commonly occurs over the kneecap or on the inner side of your knee below the joint.
Knee bursitis causes pain and can limit your mobility. Treatment for knee bursitis often includes a combination of self-care practices and doctor-administered treatments to alleviate pain and inflammation.
- Questions and answers about bursitis and tendinitis. National Institute of Arthritis and Musculoskeletal and Skin Diseases. http://www.niams.nih.gov/Health_Info/Bursitis/bursitis_tendinitis_qa.pdf. Accessed Feb. 17, 2009.
- Hanada E, et al. Knee bursitis. In: Frontera WR, et al. Essentials of Physical Medicine and Rehabilitation. 2nd ed. Philadelphia, Pa.: Saunders Elsevier; 2008. http://www.mdconsult.com/das/book/body/120873802-11/805536116/1678/65.html#4-u1.0-B978-1-4160-4007-1..50064-X_1032. Accessed Feb. 17, 2009.
- Anderson BC. Knee bursitis. http://www.uptodate.com/home/index.html. Accessed Feb. 17, 2009.
- Regional processes: Knee. In: Noble J, et al. Textbook of Primary Care Medicine. 3rd ed. St. Louis, Mo.: Mosby; 2001. http://www.mdconsult.com/das/book/body/125156294-3/814972377/959/864.html#4-u1.0-B0-323-00828-3..50139-4--cesec42_4185. Accessed March 11, 2009.
- Prepatellar (kneecap) bursitis. American Academy of Orthopaedic Surgeons. http://orthoinfo.aaos.org/topic.cfm?topic=A00338. Accessed March 11, 2009.
- Kouotouzis T, et al. Tendinopathy and bursitis. In: Marx JA, et al. Rosen's Emergency Medicine: Concepts and Clinical Practice. 6th ed. Philadelphia, Pa.: Mosby; 2006. http://www.mdconsult.com/das/book/body/125156294-3/814972377/1365/357.html#4-u1.0-B0-323-02845-4..50120-7--cesec40_5880. Accessed March 11, 2009.
- Huddleston JI, et al. Hip and knee pain. In: Firestein GS, et al. Kelley's Textbook of Rheumatology. 8th ed. Philadelphia, Pa.: W.B. Saunders; 2008. http://www.mdconsult.com/das/book/body/125156294-5/815026131/1807/290.html#4-u1.0-B978-1-4160-3285-4..10042-7--s0020_1201. Accessed March 11, 2009.
