Lunate dislocation


Perilunate disruptions are sustained in backward falls onto an outstretched hand. Lunate dislocation is the most severe form (stage IV) of perilunate disruptions. There is extensive rupture of the carpal ligaments, especially the dorsal radiolunate ligament, associated with these injuries.

There is volar dislocation of the lunate relative to the radius, with 90-degrees palmar rotation.