title: Nontraumatic superior dislocation of the patella.
abstract: A case of superior patellar dislocation is described. The dislocation was sustained without apparent trauma. Closed reduction was accomplished in the emergency department. No apparent injury to the patellar ligament was sustained.
mesh_terms: D006801:Humans; D004204:Joint Dislocations / Q000000981:diagnostic imaging / Q000209:etiology / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D010329:Patella / Q000000981:diagnostic imaging / Q000293:injuries*; D011859:Radiography