special subjects
Work Related Repetitive Motion Injuries
Symptoms and Signs
Tendonitis usually causes pain when the affected tendons are actively moved, particularly against resistance. The affected tendon is tender when palpated. In severe cases, warmth, edema, and erythema may be present, but skin induration is absent. Bursitis results in pain and particularly tenderness that localizes to the affected bursa. Active or passive joint movement worsens pain as a muscle or tendon slides over the inflamed bursa. Synovial fluid accumulates in the bursa, causing it to swell (although swelling is not always evident grossly); the bursa is tender and the skin covering it may be warm or red, Movement that compresses or stretches the swollen bursa also causes pain. Swelling may be more prominent than pain in olecranon bursitis. Nerve entrapment most commonly causes pain, tingling, numbness, and burning distal to the site of entrapment. Motor weakness is less common. 