Dynamic radial translation instability of the carpus.

We report a case of a dynamic radial translation instability of the carpus, secondary to avulsion of the ulnocarpal ligaments and attenuation of the short radiolunate ligament. In addition, there was a peripheral detachment of the distal radioulnar ligaments causing distal radioulnar instability. Reattachment of the avulsed ligaments combined with a Sauvé-Kapandji procedure resulted in an excellent function, which was maintained 10 years after surgery.