<unk>  can be one of three types of arthritis 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
Knee arthritis
Facet joint arthrosis
Facet syndrome
Osteochondritis
Back strain
Medial knee injuries
Knee dislocation