Scapholunate Ligament Repair and Capsulodesis for the Treatment of Static Scapholunate Dissociation

Abstract

Twenty-four patients were treated with scapholunate ligament repair and dorsal capsulodesis for scapholunate dissociation. Seventeen patients were available for follow-up at an average of 30 months. The average interval between injury and surgery was 3 months. At final follow-up, no patients were pain-free. Average total wrist motion was 60% and grip strength 70% of the opposite normal side. The average preoperative scapholunate angle was 78° and was corrected to a normal 47° at surgery. The average final scapholunate angle was 72°, which was not significantly different from the preoperative value. The scapholunate gap likewise was not significantly changed postoperatively. Only two patients had an excellent or good outcome using a clinical grading system, and six out of 17 scored good or excellent using a radiographic grading system. In conclusion, repair of the scapholunate ligament with dorsal capsulodesis failed to provide consistent pain relief and maintain carpal alignment in patients with static scapholunate instability.