Rotura espontánea del aparato extensor secundaria a artrosis de la articulación radiocubital distal

Abstract

ObjectiveTo present functional outcomes of surgery for ruptures of the extensor apparatus with osteoarthritis of the distal radio-ulnar joint in non rheumatic patients. To evaluate the influence of ulnar variance and dorsal dislocation of the ulna in these patients. Material and methodA retrospective study of atraumatic rupture of the extensor apparatus at the distal radio-ulnar joint in the period 2002-2012. Radiological study focused on analyzing trigger factors were performed. The surgical technique was performed taking into account number of affected tendons and joint disease. Functional outcome and pain is assessed by the TAM, Quick-DASH, VAS scale. Results8 cases of spontaneous rupture of extensor mechanism were identified due to osteoarthritis distal radio-ulnar joint. Mean age 73 years (66-81). Mean follow-up five years (2-12). In 7 cases multiple tendon involvement, mainly those responsible for the middle, ring and little fingers were seen. In the radiological study it was found the presence of an ulnar minus variance in 3 cases. Functional outcomes in the TAM scale were good in 5 cases and fair in 3 cases. EVA 2. Quick-DASH 21.7. ConclusionsAll patients reflect an acceptable functional outcome following TAM and Quick-DASH questionnaire, with a slight pain according to the visual analog scale. All patients maintained or improved their TAM scale compared with preoperative examination, obtaining a good result in 62.5% of cases. The presence of a variance plus or subluxation of the head to trigger the break is not required due to 3 patients with variance minus and without subluxation suffered tendon rupture.