Coracoacromial arch | definition of coracoacromial arch by Medical dictionary
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
The coracoacromial arch
consists of the acromion, coracoacromial ligament, and coracoid process.
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
This view shows the coracoacromial arch
, including a significant curve or spur on the anterior and inferior acromion.