coracoacromial arch
Pronunciation: kor-uh-ko-uh-KROM-ee-uhl
Anatomical structure formed by the coracoid process, acromion, and coracoacromial ligament that creates potential impingement site.
Full Definition
The coracoacromial arch is a bony and ligamentous structure in the shoulder consisting of the coracoid process of the scapula, the acromion, and the coracoacromial ligament that spans between them. This arch forms the roof over the subacromial space and serves as a protective canopy for the rotator cuff tendons and subacromial bursa. In orthopedic sports medicine, the coracoacromial arch is clinically significant as a potential site of impingement syndrome, particularly in overhead athletes. Variations in arch morphology can predispose athletes to subacromial impingement and rotator cuff pathology.
Usage
Usage note: Precise anatomical term requiring careful spelling; often misspelled as 'coracoacromion arch'.
In Context
- "MRI revealed narrowing of the coracoacromial arch contributing to subacromial impingement." — Imaging report
- "Acromioplasty was performed to decompress the coracoacromial arch and relieve impingement symptoms." — Operative report