Types of glenohumeral arthritis

Here is a straightforward way to group the different types of shoulder arthritis. Click on the diagnosis to see the typical radiographic appearance.

I. Primary osteoarthritis (primary degenerative joint disease) – non-inflammatory arthritis without prior injury or surgery

II. Secondary osteoarthritis
     A. Post-traumatic arthritis – arthritis after prior injury

     B. Capsulorrhaphy arthropathy – arthritis after prior repair for glenohumeral instability

     C. Chondrolysis – arthritis after intra-articular infusion of local anesthetics with a pain pump 

     D. Inflammatory arthritis – rheumatoid arthritis, lupus, other auto-immune forms of arthritis, septic (infectious) arthritis. 

     E. Avascular necrosis – collapse of the humeral articular surface from ischemia of the subchondral bone 
     F. Dysplasia – developmental defect, usually resulting in deficient posterior inferior glenoid

     G. Rotator cuff tear arthropathy – a destructive condition destroying both the articular cartilage of the glenohumeral joint and the integrity of the rotator cuff tendons 

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