AP APICAL OBLIQUE AXIAL PROJECTION: SHOULDER (TRAUMA)

Pathology demonstrated :

Optimal trauma projection for possible scapulohumeral dislocations (especially posterior dislocations)

• Glenoid fractures, Hill-Sachs lesions, and soft tissue calcifications*.

IR size :

24 × 30 cm (10 × 12 inches).

IR POSITION :

lengthwise / inpucky.

Shielding :

Shield radiosensitive tissues outside region of interest.

Patient position :

Perform radiograph with patient in erect or supine position. (The erect position is usually less painful, if patient’s condition allows.) Rotate body 45° toward affected side (posterior surface of affected shoulder against IR).

Part position :

Perform radiograph with patient in erect or supine position. (The erect position is usually less painful, if patient’s condition allows.) Rotate body 45° toward affected side (posterior surface of affected shoulder against IR).

CR :

CR 45° caudad, centered to scapulohumeral joint.

Collimation :

Collimate closely to area of interest.

criteria :

Anatomy Demonstrated: • Humeral head, glenoid cavity, and neck and head of the scapula are well demonstrated free of superimposition.

Position: • The coracoid process is projected over part of the humeral head, which appears elongated. • Acromion and AC joint are projected superior to the humeral head. • Collimation to area of interest.

Exposure: • Optimal density (brightness) and contrast with no motion demonstrate clear, sharp bony trabecular markings and soft tissue detail for possible calcifications.