The coracobrachialis originates by a short, stout tendon from the apex of the coracoid process, conjoined with the short head of biceps. This proximal tendon is the anchor point in Latarjet procedure reconstruction and is important in coracoid impingement pathology.
The coracobrachialis proximal tendon and the short head biceps tendon share the coracoid apex as a conjoined structure. In the Latarjet procedure, the coracoid is osteotomised with both tendons intact, and the conjoined tendon graft provides the sling effect preventing anterior shoulder dislocation. Musculocutaneous nerve injury risk during Latarjet is highest where the nerve pierces coracobrachialis 3-8 cm distal to the coracoid.
Fatigue fracture through the coracoid base from conjoined tendon traction in overhead athletes, producing anterior shoulder pain and weakness of elbow flexion, requiring CT confirmation and surgical fixation.
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