Medical Definition of Coracoacromial arch
1. 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. (05 Mar 2000)
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Lexicographical Neighbors of Coracoacromial Arch
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