1. Interposition of sesamoids in metacarpophalangeal dislocations frequently adds to the difficulty of reduction of these dislocations.
2. When the interposition of sesamoids is present an attempt should first be made to replace these bones in their normal positions by moderate traction on the fingers and rotation of the phalanges medialward to lateralward several times before reduction of the dislocations is tried.
(C) 1940 All Rights Reserved.The Journal of Bone and Joint Surgery, Inc.