Abstract
Acute ulnar nerve palsy with distal radius fracture is extremely rare. An 18-year-old male suffered a distal radius fracture in a traffic accident. His wrist showed fork deformity and his hand claw deformity. A week later, the fracture was treated surgically using a volar locking plate, and then conservative treatment was adopted for the ulnar nerve. Six weeks later, we carried out neurolysis of the ulnar nerve at the Gyon tunnel, because of persistent and complete ulnar nerve palsy. The nerve was intact and had no adhesions, and 3 months later, the ulnar nerve palsy was completely resolved. Acute nerve palsy involves 3 factors : , nerve injury, physiological conduction block, and acute neuropathy. However, differential diagnosis is very difficult in the early period. Therefore, in this case, we should have performed neurolysis earlier.
