Disociación escafolunar: técnica de reconstrucción ligamentaria que combina una nueva tenodesis y una capsulodesis dorsal por un solo abordaje. Resultados preliminares

background: the aim of this study is to describe a new reconstructive technique combining dorsal tenodesis and ligament capsulodesis for the treatment of chronic scapholunate dissociation (sld). methods: a retrospective evaluation was done of 8 patients (7 men) presenting chronic sld with static carpal instability treated with a new reconstructive technique developed by the authors using a strip of the extensor carpi radialis longus and the dorsal intercarpal ligament. average age: 39. minimum follow-up: 1 year. the clinical evaluation included: comparative ranges of motion and grip strength, pain (vas), and functional scores of dash and wrightington. radiological evaluation: scapholunate space, radioscaphoid and scapholunate angles, and arthrosis. mean follow-up: 23 months (12-58). results: final ranges of motion: flexion = 51° (60% that of the contralateral), extension = 70° (82%), ulnar deviation = 28° (74%), radial deviation = 20° (83%). mean grip strength = 54lbs (74%). mean pain (vas): 3 (1-5).dash and wrightington scores: 13 (0.83-30) and 73 (65-90), respectively. functional results were excellent in 2 cases and good in 6 cases. there was no recurrence of carpal collapse. one patient presented moderate midcarpal arthrosis. conclusions: these preliminary results suggest that this new reconstructive technique represents a simple (only dorsal approach), safe (avoids perforation of the scaphoid with a risk of fracture or necrosis), and effective alternative to treat this difficult pathology.