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By Mayo Clinic staffThe most common causes of bursitis are repetitive motions or positions that irritate the bursae around a joint. Examples include:
- Throwing a baseball or lifting something over your head repeatedly
- Leaning on your elbows for long periods of time
- Extensive kneeling, for tasks such as laying carpet or scrubbing floors
- Prolonged sitting, particularly on hard surfaces
Some bursae at the knee and elbow lie just below the skin, so they are at higher risk of puncture injuries that can become infected and cause septic bursitis.
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- Questions and answers about bursitis and tendonitis. National Institute of Arthritis and Musculoskeletal and Skin Diseases. http://www.niams.nih.gov/Health_Info/Bursitis/default.asp. Accessed July 21, 2009.
- Tendonitis/Bursitis. American College of Rheumatology. http://www.rheumatology.org/public/factsheets/diseases_and_conditions/tendonitis.asp. Accessed July 21, 2009.