The Shoulder
Feb 08, 2016
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.