The Shoulder

Things to know 3 views AP, Lateral, Transthoracic 10 x 12 cassette Marker Shield Collimation Measures 12 on AP and Lateral 70 @6

AP External Rotation 10 x 12 crosswise Place the posterior side of the shoulder to

IR center shoulder to center of IR Externally rotate arm until the epicondyles

are parallel with IR Hold breath

CR 3/4 inch inferior to coracoid process

SID 40

Seen on Film The Proximal humerus 2/3 of clavicle The upper scapula The greater tubercle in profile

AP Internal Rotation 10x 12 crosswise Same position as external But rotate the arm internally until the

epicondyles are perpendicular to IR Hold breath

CR ¾ inch inferior to coracord SID 40

Seen on film

The lesser tubercle in profile

Transthoracic 10 x 12 lengthwise Measure 34 75@60

Positioning Transthoracic Place affected shoulder against IR Raise the good arm over the head Center the surgical neck to IR Patient in true lateral position Breath normally

CR directed through surgical neck

SID 40

Seen on film Lateral view of the proximal half of

humerus No superimposition of other shoulder

The Humerus

The AP and Lateral Projections

Cassette size 14 x17 lengthwise One cassette per view Measures 9 70@6 Shield Mark Collimate Hold breath

Part Position for AP Place patient’s shoulder in contact with

table or bucky. Extend the arm as far as patient is able Abduct arm slightly and supinate hand

until the epi-condyles are parallel with IR

Central Ray perpendicular to Mid-HumerusSID 40

Seen on Radiograph for AP The entire humerus including both joints The greater tubercle is seen in profile

laterally lateral and medial epi-condyles in profile.

Part Position for Lateral Same position as AP Internally rotate the hand until the epi-

condyles are perpedicular with IR

CR Mid-HumerusSID 40

Seen on radiograph for lateral Entire humerus including both joints The epi-condyles are superimposed The lesser tubercle is seen in profile

medially.