Occult fracture through the triradiate cartilage of the acetabulum.
D000077:Acetabulum / Q000000981:diagnostic imaging / Q000293:injuries*; D002358:Cartilage, Articular / Q000000981:diagnostic imaging / Q000293:injuries*; D002675:Child, Preschool; D050723:Fractures, Bone / Q000000981:diagnostic imaging*; D050724:Fractures, Cartilage; D025981:Hip Injuries; D006621:Hip Joint / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D011859:Radiography