positioning for shoulder comp-internal, external
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| what is the insertion point for the supraspinatus muscle? | greater tubercle
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| what is the insertion point for the infraspinatus muscle? | greater tubercle
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| what is the insertion point for the subscapularis muscle? | lesser tubercle
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| what position should the arm be in for the external rotation shoulder? | hand supinated, placing the epicondyles parallel to the IR
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| what position should the arm be in for a neutral rotation shoulder? | palm of hand facing hips, placing the epicondyles 45 degrees to the plane of the IR
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| what position should the arm be in for an internal rotation shoulder? | posterior aspect of the hand touching the hip, placing the epicondyles perpendicular to the plane of the IR.
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| what is visualized during an external rotation shoulder? | greater tubercle in profile laterally
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| what is visualized during a neutral rotation shoulder? | posterior aspect of the greater tubercle
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| what should be visualized during an internal rotation shoulder? | proximal humerus true lateral, lesser tubercle in profile medially
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| how much is the tube angle for an outlet shoulder? | 10-15 degrees caudad
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| where does the CR enter for an outlet shoulder? | superior aspect of the humeral head
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| what is the evaluation criteria for an internal rotation shoulder? | lesser tubercle in profile medially, outline of greater tubercle superimposing humeral head
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| what is the evaluation criteria for an external rotation shoulder? | humeral head in profile, greater tubercle in profile laterally, scapulohumeral joint with slight overlap of humeral head over glenoid, outline of lesser tubercle between humeral head and greater tubercle.
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| what is the evaluation criteria for a neutral rotation shoulder? | greater tubercle partially superimposes the humeral head, humeral head in partial profile, slight overlap of humeral head on glenoid fossa
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