part of part of distal epiphysis of humerus zone of long bone radial head of humerus UBERON:0012129 radial condyle of humerus Hemispherical ball located at the lower end of the humerus that stands out prominently from the surrounding structures toward the flexor surface of the forelimb and fits into the socket joint of the olecranon process[AAO]. eminentia capitata Hemispherical ball located at the lower end of the humerus that stands out prominently from the surrounding structures toward the flexor surface of the forelimb. radial condyle AAO:0000838 capitellum of humerus capitellum