- Results from destruction of articular surface between radiocapitellar and ulnotrochlear joints
- Characterized by pain and loss of motion, with swelling and instability in later stages
Etiology and Pathophysiology
- Primary osteoarthritis, rheumatoid arthritis, posttraumatic arthritis, septic arthritis, crystalline arthropathy, inflammatory arthritis, and other inflammatory conditions
- Primary osteoarthritis
- Usually affects dominant arm of middle-aged males with history of repetitive arm use (throwing athletes, heavy laborers)
- Rheumatoid arthritis
- Inflammatory attack on synovium with eventual damage to cartilage and bone
- Posttraumatic elbow arthritis
- Most common in young males
- Intra-articular radial head fracture can lead to radiocapitellar osteoarthritis.
- Intra-articular distal humerus or proximal ulna fracture may lead to arthritic change.
- History of strenuous, repetitive arm use
- Rheumatoid arthritis or other inflammatory state
- Prior elbow trauma or fracture
- History of septic arthritis
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