Racquet player's pisiform.
Four patients whose sport involved wielding a racquet presented with symptoms at the base of the hypothenar eminence which were due to minor degrees of subluxation of the pisiform. In two there was in addition a chondromalacia of the articular cartilage of the joint.
D000293:Adolescent; D001265:Athletic Injuries; D002357:Cartilage Diseases / Q000209:etiology / Q000473:pathology; D002358:Cartilage, Articular / Q000473:pathology; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000000981:diagnostic imaging / Q000209:etiology; D008297:Male; D011859:Radiography; D012716:Sesamoid Bones / Q000000981:diagnostic imaging / Q000293:injuries* / Q000601:surgery