Why is anterior dislocation most common

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Stanislavsky, A. Anterior shoulder dislocation. Reference article, Radiopaedia. Musculoskeletal , Trauma. Anterior dislocation of the shoulder Anterior shoulder dislocations Anterior dislocations of the shoulder Anterior dislocation of shoulder. URL of Article. On this page:. Quiz questions. Manaster, David G. Disler, David A. Musculoskeletal Imaging: The Requisites. Anterior Shoulder Dislocation.

Ann R Coll Surg Engl. David J. Magee, James E. Zachazewski, William S. Promoted articles advertising. Case 1 Case 1. Case 2: bilateral Case 2: bilateral. Case 3 Case 3. Case 4 Case 4. Case 5 Case 5. Case 6: ultrasound Case 6: ultrasound. This may be achieved by either closed reduction or surgical repair.

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Read the disclaimer. Shoulder dislocation. Summary Because the head of the humerus is substantially larger than the glenoid fossa , shoulder dislocation is the most common type of joint dislocation. Etiology Anatomy: The head of the humerus is larger than the shallow glenoid fossa , which accounts for the high incidence of shoulder dislocation.

Trauma e. In anterior or anterior -inferior dislocation The humeral head can usually be palpated below the coracoid process. The arm is typically held in external rotation and slight abduction. In posterior dislocation Prominence of the posterior shoulder with anterior flattening Prominent coracoid process The arm is held in adduction and internal rotation , with the patient unable to actively rotate it in the outward direction.

In inferior dislocation The arm is held above the head, with the patient unable to actively adduct the arm. Neurologic dysfunction, especially with involvement of the axillary nerve , is common. Diagnostics Physical examination Look for signs of fracture. Check for neurovascular deficits. Prognosis High rate of recurrence After rotator cuff repair, the rate of recurrence is significantly lower.