lipomas and ganglions.
Inflammatory causes primarily involve rheumatoid synovitis of the radiocapitellar joint.
Iatrogenic causes following surgical intervention are also described.
Classic history and presentation: Classically, a young male laborer or bodybuilder doing repetitive pronosupination activities presenting with forearm and wrist pain, weakness of thumb and wrist extensors, and no sensory deficits.
Prevalence: 2-4 per 100 000 people per year in the United States.
- Age – most common in the second to fourth decade of life
- Sex / gender – more common in males
- Repetitive pronosupination activities
- Compressive lesions
- Elbow trauma (ie, Monteggia fracture or radial head fracture)
- Rheumatoid arthritis