Midcarpal arthrodesis has been a treatment of choice in the last decade for scapholunate advanced collapse and related conditions of the wrist. In this study, we present a new uncomplicated technique in which a 3-corner intercarpal fusion is done with screw fixation from a volar approach. The advantages of this technique include simplified excision of the scaphoid, radial styloidectomy, and straightforward placement of 2 screws from the lunate into the capitate and hamate, respectively, to maintain a readily achievable correction of the dorsal intercalated segment instability. With adequate debridement and compression of the midcarpal joint, fusion is readily achieved.

The aetiology of the carpal tunnel syndrome is unknown in most cases. Among our patients we found four with acute thrombosis occurring in a persistent median artery which led to acute carpal tunnel symptoms. The purpose of this study was to compare our cases with those from the literature and to show possible causes for the thrombosis. In conclusion, thrombosis of a persistent median artery as a cause of acute carpal tunnel syndrome is certainly very rare. Sudden onset of pain, local tenderness at the palm and decreased sensation in the median nerve distribution may provide clues for the diagnosis. Prior to surgery ultrasound can be performed to confirm the diagnosis.