Hard blow to the tip of the elbow on a wall Bursitis normally develops as a result either of a single injury to the elbow (for example, a hard blow to the tip of the elbow), or perhaps more commonly due to repeated minor injuries, such as repeated leaning on the point of the elbow on a hard surface. The chance of developing bursitis is higher if one's job or hobby involves a repetitive movement (for example, tennis, golf, or even repetitive computer work involving leaning on one's elbow). The likelihood of developing the condition is increased as one gets older. As a reaction to injury, the lining of the bursa becomes inflamed. It then secretes a much greater than normal amount of fluid into the closed cavity of the bursa, from where it has nowhere to go. The bursa therefore inflates, producing a swelling over the proximal end of the ulna which is usually inflamed and tender. Another possible cause of inflammation of the bursa is infection, which can usually (but not always) be traced to a crack or other lesion in the skin which allowed for bacteria of the normal skin flora to invade deeper layers of tissue. This bursa is located just over the extensor aspect of the extreme proximal end of the ulna. In common with other bursae, it is impalpable and contains only a very small amount of fluid in its normal state, and fulfills the function of facilitating the joint's movement by enabling anatomical structures to glide more easily over each other.
Olecranon bursitis
Tendinopathy
Retrocalcaneal bursitis
Cellulitis
Ischial bursitis
Septic arthritis
Infrapatellar bursitis
Pes anserine bursitis