lacertus fibrosus

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bi·cip·i·tal ap·o·neu·ro·sis

, aponeurosis bicipitalis [TA]
radiating fibers from the distal tendon of attachment (insertion) of the biceps that form a triangular band passing obliquely across the hollow of the elbow to the ulnar side and becoming merged into the deep fascia of the forearm, thus providing the muscle with an indirect attachment to the subcutaneous border of the ulna. Formerly called "grace Dieu" fascia, it serves to protect the brachial artery and median nerve during phlebotomy of median cubital vein.

bicipital aponeurosis

A radiating triangular band of fibrotendinous tissue that obliquely traverses the ulnar hollow of the elbow and merges with the forearm’s deep fascia. The bicipital aponeurosis provides a tissue plane that protects the brachial artery and median nerve in phlebotomy of local veins.

lacertus fibrosus

An aponeurotic band from the biceps tendon to the bicipital or semilunar fascia of forearm.
See also: lacertus


pl. lacerti [L.] a name given to certain fibrous attachments of muscles.

lacertus fibrosus
part of the antebrachial fascia extending from the biceps to the radial carpal extensor muscles and a significant part of the horse's stay apparatus.
References in periodicals archive ?
Fortunately, direct repair was accomplished as there was only minimal retraction of the tendon held by the lacertus fibrosus.