Capitulum of the humerus the distal end. In non-avian archosaurs, including crocodiles, the capitellum and the trochlea are no longer bordered by distinct etc.- and entepicondyles respectively, and the distal humerus consists two gently expanded condyles, one lateral and one medial, separated by a shallow groove and a supinator process. Romer (1976) homologizes the capitellum in Archosauromorphs with the groove separating the medial and lateral condyles. In birds, where forelimb anatomy has an adaptation for flight, its functional if not ontogenetic equivalent is the dorsal condyle of the humerus. Capitulum of the humerus In human anatomy of the arm, the capitulum of the humerus
Supracondylar humerus fracture should be used to immobilise the elbow at 20 to 30 degrees flexion in order to prevent further injury of the blood vessels and nerves while doing X-rays. Splinting of fracture site with full flexion or extension of the elbow is not recommended as it can stretch the blood vessels and nerves over the bone fragments or can cause impingement of these structures into the fracture site. Depending on the child's age, parts of the bone will still be developing and if not yet calcified, will not show up on the X-rays. The capitulum of the humerus is the first