coracoacromial arch

cor·a·co·a·cro·mi·al arch

a protective arch formed by the smooth inferior aspect of the acromion and the coracoid process of the scapula with the coracoacromial ligament spanning between them. This osseoligamentous structure overlies the head of the humerus, preventing its upward displacement from the glenoid fossa.
References in periodicals archive ?
If the coracoacromial arch is violated, these patients may also demonstrate superior escape of the humeral head.
The examiner then attempts to further internally rotate the shoulder, driving the greater tuberosity into the coracoacromial arch.
Extrinsic impingement refers to pathological changes in the coracoacromial arch, i.
This view shows the coracoacromial arch, including a significant curve or spur on the anterior and inferior acromion.