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Shoulder - AP Axial Oblique
|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 |
|Film / Screen Combination||Regular (CR and DR as recommended by manufacturer)|
|Bucky / Grid||Upright bucky or table bucky (trauma)|
|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)|
|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.
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.
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