Shoulder - AP Axial Oblique
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Sources
Bontrager KL, Lampignano JP. AP apical oblique axial projection: Shoulder (trauma). In: Textbook of Radiographic Positioning and Related Anatomy. 6th ed. St. Louis, MI: Elsevier Mosby; 2005: 201.
Frank ED, Long BW, Smith BJ. Glenoid cavity: AP axial oblique projection. In: Merrill's Atlas of Radiographic Positioning & Procedures. 11th ed. St. Louis, MI. Elsevier Mosby; 2007: 198-199.
NEEP MJ, AZIZ A 2011 "Radiography of the acutely injured shoulder" Radiography 17(3) pp 188-192.
Radiographic Positioning
Adult | Other related pages of interest |
Name of projection | Shoulder - AP Oblique Axial (Modified Trauma Axial) |
Area Covered | Scapulohumeral joint, humeral head, scapular head and neck |
Pathology shown | Posterior scapulohumeral dislocations, glenoid fractures, Hill-Sachs lesions, and soft tissue calcifications |
Radiographic Anatomy | Shoulder Radiographic Anatomy |
IR Size & Orientation | 18cm x 24cm Portrait |
Film / Screen Combination | Regular (CR and DR as recommended by manufacturer) |
Bucky / Grid | Upright bucky or table bucky (trauma) |
Filter | No |
Exposure | 65 kVp 16 mAs |
FFD / SID | 100cm |
Central Ray | CR angled 45° caudal Directed to the scapulohumeral joint |
Collimation | Centre: Scapulohumeral joint Collimate closely to area of interest |
Markers | Lateral and superior Marker orientation is AP |
Shielding | Gonadal (check your department's policy guidelines) |
Respiration | Suspended |
Positioning |
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Critique | Positioning
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Special Notes | The modified AP axial oblique can be used in trauma situations when the patient cannot abduct their arm for a standard axial shoulder radiograph. This projection allows the patient to maintain their arm position in a sling or otherwise. Posterior dislocation projects the humeral head superiorly from the glenoid cavity. Anterior dislocation projects the humeral head inferiorly from the glenoid cavity. |
Sources
Bontrager KL, Lampignano JP. AP apical oblique axial projection: Shoulder (trauma). In: Textbook of Radiographic Positioning and Related Anatomy. 6th ed. St. Louis, MI: Elsevier Mosby; 2005: 201.
Frank ED, Long BW, Smith BJ. Glenoid cavity: AP axial oblique projection. In: Merrill's Atlas of Radiographic Positioning & Procedures. 11th ed. St. Louis, MI. Elsevier Mosby; 2007: 198-199.
NEEP MJ, AZIZ A 2011 "Radiography of the acutely injured shoulder" Radiography 17(3) pp 188-192.