SIMPLE EXCISION OF THE TRAPEZIUM FOR OSTEOARTHRITIS OF THE CARPOMETACARPAL JOINT OF THE THUMB

We have reviewed the results in 34 patients (39 operations) following simple excision of the trapezium for osteoarthritis of the basal joint of the thumb. The average age at operation was 57 years and the avera ge follow-up was 6 years. All the patients were graded clinically and radiologically and were asked their opinion of the procedure. There wa s dramatic relief of pain following this procedure. Stability of the t humb was not compromised. When compared to the unoperated side, thumb length, thumb abduction and first web span were similar. There was a r eduction in pinch strength (operated 8.1 k.p.a., non-operated 9.6 k.p. a.) and grip strength (operated 15.5 k.p.a., non-operated 19.5 k.p.a.) and an increase in MP extension (operated 5.4 degrees, non-operated 2 .9 degrees) following this procedure but the differences were not stat istically significant. 11 patients (32%) had scar hyperaesthesia on te sting but this was a clinical problem in two patients only (5%). Simpl e excision of the trapezium is a satisfactory procedure for the majori ty of patients with this disorder, but has a long post-operative rehab ilitation period.