Epidemiology
Etiology
- Risk factors vary according to the location of the injury:
- Axilla: improper crutch use (crutch palsy)
- Mid-arm:
- Fracture of humerus (radial nerve runs in spiral groove)
- Compression of the radial nerve due to draping of arm over furniture (saturday night palsy) or pressure on the axilla or upper medial arm; more likely in the setting of intoxication, anesthesia, or sleep (honeymoon palsy)
- Elbow: radial tunnel syndrome (controversial diagnosis ) due to chronic compression within the radial tunnel
- Deep forearm: posterior interosseous nerve syndrome (a syndrome characterized by weakness of muscles in the extensor compartment of the forearm) due to fracture of the radial head or chronic soft tissue compression
Pathophysiology
Clinical features
Diagnostics
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Treatment
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