[Fracture of the ulnar styloid process. Effect on wrist function in the presence of distal radius fracture].

Disruption of the ulnar styloid process is a frequent injury in concomitance with fractures of the distal end of the radius. Healing occurs in many cases in the form of pseudoarthritis. Evaluation of 222 cases of distal radius fracture showed involvement of the ulnar styloid process to have no impact upon long-term wrist function.