Bursitis - an inflammation about an articulate mucous bag. The reasons: a trauma (bruise), especially repeated, long intermittent trauma, a becoming infected of grazes, cuts in the field of a bag, etc.

Signs, current. For a purulent bursitis the acute beginning is characteristic. At a chronic serous bursitis the liquid gradually collects in a mucous bag, not causing a pain. The basic sign - the localized tumescence in the field of a locating about an articulate bag, more often on a forward surface of a knee joint or in the field of a ulnar process. The purulent bursitis can become complicated a phlegmon of surrounding soft tissues. At spontaneous opening there are fistulas.