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12 terms

Merrill's chapter 5

positioning of shoulder girdle, humerus
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Humerus AP erect/recumbent
IR 14x17, 1.5" above shoulder
slightly abduct arm, epicondyles paralled to IR
CR perp to IR, centered mid-humerus, rotate collimator & include both joints
suspend respiration
*greater tubercle in profile
lateral Humerus erect
IR 14x17, 1.5" above shoulder
bend elbow 90º, back of hand on hip; epicondyles perp to IR
CR perp to IR, centered mid-humerus, rotate collimator & include both joints
suspend respiration
*lesser tubercle in profile, epi's superimposed
lateral Humerus recumbent
IR 14x17, 1.5" above shoulder
rotate forearm medially, back of hand on thigh; epicondyles perp to IR (or flex elbow 90º, hand above head, thumb down)
CR perp to IR, centered mid-humerus, include both joints
suspend respiration
*lesser tubercle in profile, epi's superimposed
lateral Humerus, lateral recumbent
*for known distal humerus fx
IR 10x12, under arm up to axilla, flex elbow if possible, epi's perp to IR
CR perp to IR
suspend respiration
Transthoracic lateral
Lawrence Method
*trauma; obvious fx
IR 10x12 LW
affected side against IR, unaffected arm raised over head, mid-coronal plane perp to IR (or if patient can't raise arm, angle CR 15-20º cephalic)
CR perp to IR, exiting at surgical neck
breathing technique
Shoulder AP external rotation
IR 10x12
supine or upright, supinate hand, epi's parallel to IR
CR centered 1" below coracoid process, perp to IR
suspend respiration, collimate to include AC and SC
*greater tubercle in profile
Shoulder AP neutral rotation
IR 10x12
supine or upright, rest palm against thigh, epi's in natural oblique
CR centered 1" below coracoid process, perp to IR
suspend respiration, collimate to include AC and SC
*greater tubercle superimposed
Shoulder AP internal rotation
IR 10x12
supine or upright, rotate arm internally, back of hand on thigh; epi's perp to IR
CR centered 1" below coracoid process, perp to IR
suspend respiration, collimate to include AC and SC
*lesser tubercle in profile medially
inferosuperior axial projection
Lawrence Method
IR 10x12, at top of shoulder perp to table
SUPINE, elevate head, shoulder and elbow 2-3"; abduct are as much as possible, rotate humerus externally; turn head away
CR horizontal, 15-30º medially thru axilla
inferosuperior axial projection
West Point Method
IR 8x10, at top of shoulder perp to table
PRONE, elevate shoulder & head, abduct arm 90º, forearm hanging over side of table; turn head away
CR dual angle 25º anterior & 25º medial; enters 5" inferior & 1.5" medial to acromion, exits glenoid
Scapular "Y"
PA oblique
*shoulder dislocation
IR 10x12
upright (can be done AP, supine) midcoronal plane 45-60º rotation to place scapular body perp to IR
CR perp to shoulder joint at scapulohumeral
*body of scapula superimposed
Grashey - AP oblique
IR 10x12
supine or upright, rotate onto affected side so midcoronal plane is 35-45º to place scapular body parallel to IR, rest palm on abdomen
CR perp to IR at glenoid cavity
*glenoid cavity in profile