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Positioning
Shoulder, clavicle, AC joints, scapula
Term | Definition |
---|---|
Shoulder AP external rotation | CR 1" inferior to coracoid process. Epicondyles parallel to the IR. Collimate to see the SC joint and 1" above shoulder shadow. |
Shoulder AP internal rotation | CR 1" inferior to coracoid process. Epicondyles perpendicular to the IR. Collimate to see the SC joint and 1" above shoulder shadow. |
Shoulder AP neutral rotation | CR 1" inferior to coracoid process Epicondyles 45 degrees to the IR. Collimate to see the SC joint and 1" above shoulder shadow. |
Shoulder AP oblique projection | Grashey method- RPO/LPO. CR 2" medially 2" inferior to superolateral border (feel for the dip). Place palm of hand on abdomen, keep scapula parallel to IR and rotate 35-45 degrees toward affected side to open scapulohumeral joint. Collimate to IR size. |
Shoulder Inferosuperior axial projection | Lawrence method. Patient supine with arm abducted 90 degrees, epicondyles parallel to floor and use sponges to lift the body ~ 2". CR horizontal and angled 15-30 degrees medially into the axilla out the AC joint. Collimate to IR size or less. |
Shoulder Superoinferior axial projection | Patient seated leaning over the IR with elbow flexed at 90 degrees and hand in prone position. CR angled 5-15 degrees toward the elbow through AC joint out axilla. Collimate to IR size or less. |
Shoulder PA oblique projection | Scapular Y- LAO/RAO. CR at medial border of scapula perpendicular to scapulohumeral joint. Rotate patient 45-60 degrees with AC joint and medial border of scapula perpendicular to IR with arm hanging by side. Collimatation= Keep 12" LW bring in 1" CW. |
Shoulder Transthoracic lateral projection | Lawrence method. CR at level of surgical neck of affected arm on the IR. Unaffected arm raised above head. Collimate to IR size. |
AC joints AP projection bilateral | CR at level with AC joints and midsternum. Collimate 6x17 CW and use thyroid sheild. Do second exposure with weight and relevel to AC joints. |
Clavicle AP projection | CR midclavicle. Elevate chin slightly. Collimate 8x12 min 6x12CW, keep SC and AC joints in collimation. |
Clavicle AP axial projection | |
Scapula AP projection | |
Scapula Lateral projection |