It is shown that the dorsal ganglion arises as a herniation from the dorsal scapholunate ligament. This herniation increases in size (according to La Place's law) owing to the unidirectional pinchcock effect of the mucosal ...

A patient who developed septic arthritis of a metacarpophalangeal joint after penetration by a tooth in a fist fight is described. The importance of recognising such a lesion at the time of injury is stressed.