الفهرس 
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Abstract
(87.5%) were finally diagnosed to have anterior shoulder dislocation. Ten patients were diagnosed to have posterior shoulder dislocation by MRI.
The MR images of patients with dislocation symptoms in the shoulder joint were reviewed that anterior dislocation of the shoulder joint was diagnosed in seventy patients (87.5%). Posterior dislocation of the shoulder joint was diagnosed in ten patients (12.5%).
MRI has a high diagnostic value in measuring the length of the anterior and posterior space of the glenohumeral joint, which is located between the head of the humerus and the glenoid. The results show that the anterior space for anterior injection approach was significantly larger for patients with posterior dislocation and reverse Hill-Sachs lesion and the posterior space for posterior injection approach was significantly larger for anterior dislocated patients with Hill-Sachs lesion.
The use of the widest area in each of the two different types of approach for injection in preparation for MRI has advantages represented in exploiting the presence of a Hill-Sachs lesion in the head of the humerus to facilitate the injection of the dye into the glenohumeral joint in preparation for MRI.
The main disadvantages are small sample size, small number of patients with posterior shoulder dislocation, the lack of application of the study observation by preforming the injection technique. The suitability