The Darrach procedure for post-traumatic reconstruction.

Over a 6-year-period, 15 women and 11 men with a mean age of 53 years (range, 24 to 80 years) had resection of the distal part of the ulna (Darrach's procedure) to address stiffness, instability, non-union, or substantial radioulnar length discrepancy after trauma. At an average follow-up of 21 months (range, 4 to 60 months), the improvement in total arc of forearm rotation averaged 87 degrees (range, 0 degrees to 160 degrees), from an average of 49 degrees to an average of 136 degrees (p < 0.001). The proportion of patients with occasional or continuous pain after the Darrach procedure (7 after vs. 16 prior ; p = 0.04) was significantly reduced. Only two patients had reoperation related to the residual ulna. In this study, the Darrach procedure improved forearm rotation and pain in patients with posttraumatic stiffness, instability, nonunion, or substantial radioulnar length discrepancy with a low complication and re-operation rate.