- Discussion:
- best true lateral view of shoulder;
- Allows Evaluation of:
-
head compression frx: (allows assessment of presence and size);
-
lesser tuberosity;
-
lesser tuberosity is seen anteriorly as a small inverted V on anterior
surface of the humeral head;
-
glenoid frxs:
-
posterior dislocation:
-
anterior instability (see
anterior dislocation)
- normally there is posterior translation of humeral head when arm is placed
in extension and external rotation;
- posterior translation is result of tension in anterior capsule & ligaments;
- this posterior translation is absent in shoulders w/ anterior instability;
-
Os Acromiale:
-
Os acromiale: anatomy and surgical implications.
- Technique:
- must be taken w/ arm abducted, not necessarily to 90 deg (optimal)
- cassette is placed on the superior aspect of the shoulder;
- arm is abducted enough to allow the radiographic beam to pass between
chest and the arm in a direction perpendicular to cassette from shoulder;
- Trauma Axillary View:
- does not require abduction of the arm (nor removal from sling);
- the patient leans backward;
- the x-ray plate is placed directly under the shoulder, and the x-ray tube
is positioned directly above;
-----------------------------------
Roentgenographic evaluation of suspected shoulder dislocation: a
prospective study comparing the axillary view and the scapular 'Y' view.
