It also forms the base for the coracoacromial ligament, which creates a protective arch over the shoulder joint. Unlike other stress fractures, a fracture of the coracoid process can lead to significant instability because it disrupts the critical ligamentous support system connecting the clavicle and scapula.
Coracoid Process Glenoid Head Centering and Shoulder Stability
Common Injuries and Pathologies Due to its prominent location and role in force transmission, the coracoid process is susceptible to specific injuries. Several muscles responsible for arm movement originate here, including the short head of the biceps brachii and the coracobrachialis, which flexes and adducts the arm.
One of the most notable is a fracture, which often occurs due to a direct blow or a fall onto an outstretched hand. This triangular bone has three distinct borders and two surfaces, with the coracoid process emerging from the junction of the superior border and the lateral angle.
Coracoid Process Glenoid Head Centering for Optimal Shoulder Stability
Physical examinations often involve palpation of the area to identify tenderness or deformity. By providing a stable origin for the biceps and coracobrachialis, it allows for powerful flexion and supination of the forearm.
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