<unk>  can be one of three types of<unk>  in the glenohumeral joint of the<unk> .  The glenohumeral joint is a ball-and-socket joint, which relies on cartilage to move smoothly and to operate normally.
Shoulder arthritis
Osteochondritis
Knee dislocation
Tennis elbow
Retrocalcaneal bursitis
Bursitis
Sacroiliitis
Sprained ankle