4-Stage Osteoarthritis Model - ShoulderSet of four shoulder models, reduced size, illustrating degenerative joint disease (osteoarthritis) of glenohumeral joint: erosion to joint articular cartilage, progression of degenerative disease, osteophyte (bone spur) formation at the articular surfaces, and humeral head flattening. Normal stage includes a full scapula. Advanced stage shows acromioclavicular joint osteoarthritis. All stages show ligaments. Size: 27 x 15 x 15 cm, Weight: 0. 7 kg