title: Superior dislocation of the patella with interlocking osteophytes.
abstract: Superior dislocation of the patella with interlocking osteophytes was only once found roentgenologically documented. Such a dislocation occurs without tendon rupture, and can occur with a hyperextension force. Reduction is easily accomplished by manipulation of the patella without anesthesia. Full active motion is present post-reduction. This entity should not be confused with vertical dislocations of the patella.
mesh_terms: D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000000981:diagnostic imaging / Q000209:etiology* / Q000628:therapy; D008349:Manipulation, Orthopedic; D008875:Middle Aged; D010329:Patella / Q000000981:diagnostic imaging / Q000293:injuries*; D011859:Radiography