Bursitis is inflammation of a bursa. A bursa is a thin sac that lies between bone and soft tissue near certain joints. A healthy bursa allows smooth movement of soft tissue over bone. Inflammation can make it painful to move the nearby joint. Bursitis occurs most often in the:
  • Shoulder
  • Elbow
  • Knee
  • Hip
Bursitis in the Shoulder
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Bursitis may be caused by:
  • A blow to an area containing a bursa
  • Repetitive stress on the bursa
  • Infection in bursa
  • Long periods of pressure on joint—leaning on elbows, sitting or kneeling on hard surfaces
  • Medical conditions that cause inflammation in joints such as rheumatoid arthritis or gout
If the stress is not relieved, bursitis can become a long-term condition.

Risk Factors

Factors that may increase your chance of bursitis include:
  • Repetitive motion activities when done to an extreme, such as swimming, running, or tennis
  • A job that requires:
    • Repetitive motions such as hammering or painting
    • Long hours in one position such as a carpenter kneeling
  • Contact sports
  • Sporting gear that is too tight
  • A puncture or deep cut that involves bursa


Bursitis may cause:
  • Pain in the area
  • Swelling
  • Reddened skin
  • Warmth around the area of the bursa
  • Decreased motion of the nearby joint
  • Decreased function of the nearby limb

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