Volar dislocation of the bases of the second and third metacarpals. A case report

Dislocation of a carpometacarpal joint is uncommon although the world literature contains many references to this entity. Dislocations of the carpometacarpal joints of the thumb and the ring and little fingers are well recognized and need no comment, but those of the index and long fingers are extremely rare, presumably due to the firm capsular and ligamentous attachments and the configurations of the joint surfaces. Volar dislocations of these joints have been reported rarely, but to our knowledge no such dislocations of just these joints are on record. The case presented here, therefore, is of interest.