Bursitis is about.

Bursitis is acute chronic inflammation of articular synovial bag, as these are cavity forms with sticky transparent liquid as between are smoothing to each other surfaces are to knee, elbow joints in a places for tensions connecting muscles,as synovial bag always affecting for mechanic and often inflaming, and reasons for bursitis are injuries, loads, arthritis, gout, injuries infection, cuts in joint bag.
As symptoms are changes in damaged synovial liquid, and near to joint lie, are most often damaging synovial bags on the front surface of knee joint, as prepattelar bursitis, in elbow is elbow bursitis.
Acute bursitis as very faster displays in a few days after injury as around tumor swelling on ten cm, ache,redness in damage side, limiting mobility in the joint, high temperature, weakness.

Chronic bursitis are not whole displays, filling slowly and inflammation effusion in mucus bag, not hurting, not hurting, redness, just hurting around tumor forming in elbow, knee.
In aches, high temperature call a doctor.

At hospital you are getting in chronic bursitis as test for joints supporting apparatus as ultrasound, x ray, test on joint liquid, for avoiding gout and arthritis, doctors using blood test on rheumatoid factor, urea acid, c reactive protein.

Cure is doing punction of joint,after apply tight bandage, warm cure,anti inflamed, analgesics, at ambulatory, hospitalization in a high temperature, bad feelings, where in pus bursitis  punction is not enough, doing surgery, as opening, drainage bag, with antibiotics, in chronic stage removing exudate, tight bandages apply, in recidiving course use surgery as cutting of mucus a bag, as bursectomia of ache joint.