Locked Thumb Metacarpophalangeal Joint Caused by Entrapment of the Sesamoid Bone: A Report of 2 Cases

AbstractLocked thumb metacarpophalangeal joint caused by entrapment of the sesamoid bone is an uncommon entity. The intact volar plate, strong ligamentous attachment between the sesamoid bone and the joint, and altered axis of inserted muscle all contribute to failure of closed reduction. The patien