Sprain of the pisiformtriquetral joint; report of six cases.

Perhaps the least satisfactory diagnosis in painful conditions of the wrist is that of tenosynovitis. In the first four patients in this series a diagnosis of tenosynovitis of the flexor carpi ulnaris was made, but their failure to respond to the usual conservative measures stimulated further investigation. The tests herein described, and the response to operative fusion, suggest that sprain of the pisiform-triquetral joint is the true patholog ’ of this uncommon condition. CLINICAL FEATURES Six patients suffering from persistent pain in the region of the pisiform bone were seen in a busy surgical out-patient department during a period of two years. The pain was described as aching in character, and was either brought on or made worse by exertion, especially