Glenohumeral osteoarthritis

This plain radiograph is from a 67-year-old woman with anterolateral shoulder pain and stiffness for several years. She denies any history of fracture, dislocation, or severe injury. However, she states: "People say I've always done man's work. It doesn't surprise me that it is arthritic since arthritis runs in my family." On plain radiograph, glenohumeral osteoarthritis is characterized by loss of articular cartilage between the humeral head and the glenoid, osteophyte formation extending from the inferior portion of the humeral head, and humeral head sclerosis. The combination of the loss of cartilage and the osteophyte creates the club-like deformity.