<unk>  is a common condition involving inflammation of one of your bursa sacs, which are filmy-colored sacs that protect and cushion your joints. The inflammation may result from arthritis in the joint or injury or infection of a bursa.<unk>  produces pain and tenderness and may limit the movement of nearby joints.
Bursitis
Amyloid arthropathy
Osteoarthritis
Osteochondritis
Shoulder arthritis
Septic arthritis
Synovitis
Synarthrosis