Medium term outcomes of the Universal 2 total wrist arthroplasty in patients with degenerative or posttraumatic osteoarthritis of the wrist

Abstract

This retrospective study reports medium term outcomes of 14 total wrist arthroplasties in patients with especially, non-rheumatoid, degenerative osteo- arthritis and post-traumatic osteoarthritis with a mean follow up of 5 to 10 years. Information of fourteen patients, 6 men and 8 women with a mean age of 61 years, was collected before and after total wrist arthroplasty (Universal 2 prosthesis, Integra) carried out by a single surgeon. Pre-operative mobility was determined by range of motion and compared to post- operative range of motion. Post-operative function was determined using the DASH (The disabilities of the arm, shoulder and hand) score and the PRWE (patient-rated wrist evaluation and grip strength) score. Grip force between the operated and non- operated hand were compared postoperatively. Three patients experienced complications. Range of motion improved post-operatively, although not significantly, due to an increase in palmar flexion. The mean DASH score was 20% and the mean total PRWE was 54%. This study shows that total wrist arthroplasty, using the Universal 2 wrist prosthesis, gives reasonable results (survival rate 84%) by decreasing pain while preserving range of motion in patients with degenerative osteoarthritis of the wrist after 5 years. However the 10-year survival rate decreases steeply to an unsatisfying 35%.