Norwegian Distal Ulna Resection vs. Replacement Study Comparing Darrach Procedure and Ulnar Head Prosthesis for Wrist Osteoarthritis

What this Trial Is About

Osteoarthritis of the joint between the forearm bones at the wrist, called the distal radioulnar joint (DRUJ), can cause pain and reduce the ability to lift and rotate the forearm. This condition often develops after fractures, ligament injuries, or degenerative wrist disease. Researchers are comparing two surgical treatments—the Darrach procedure, which removes the ulnar head, and ulnar head replacement with a prosthetic implant—to determine which method provides better function and fewer complications in patients with stable but painful DRUJ osteoarthritis. The study involves two groups: one undergoing the Darrach procedure and the other receiving a ulnar head replacement using the Herbert Ulnar Head Prosthesis. The surgeries are performed at several hand surgery centers in Norway, following standardized methods. Both groups receive the same postoperative care and follow-up schedule. Participants are randomly assigned to one of the two surgical options to fairly compare outcomes. Participants will be assessed before surgery and then followed up at 3 months, 1 year, and 5 years after the procedure. Evaluations include range of motion, grip strength, functional scores such as the Norwegian version of Quick DASH, patient-related wrist and hand evaluations, pain scales, and monitoring for any complications or additional surgeries. The study aims to gather detailed long-term data on how each surgery affects wrist function and pain over five years.

Norwegian Distal Ulna Resection - Replacement Study