pos·te·ri·or bor·der of ul·na

[TA]

the sinuous palpable subcutaneous ridge on the posterior aspect of the ulna that extends from near the olecranon to the styloid process, demarcating the "anterior" (flexor) from "posterior" (extensor) compartments of forearm.

Synonym(s): margo posterior ulnae [TA]

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References in periodicals archive

The belly on the medial aspect was larger and was arising from the medial margin of the olecranon process, proximal two thirds of posterior border of ulna, an aponeurosis which is common for FCU, extensor carpi ulnarismuscle and flexor digitorum profundus muscle and intermuscular septum between it and flexor digitorum superficialis muscle.

Ulnar and humeral heads forming separate bellies. A rare case of digastric flexor carpi ulnaris muscle/Cabezas Ulnar y humeral formando vientres separados. Un caso raro del musculo flexor ulnar del carpo digastrico

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