A PA oblique scapular Y shoulder projection that shows accurate positioning of a patient with an anterior dislocation demonstrates

1. a Y formation.
2. the humeral head positioned anterior to the glenoid fossa beneath the coracoid.
3. superimposition of the medial and lateral scapular borders.
4. the humerus superimposed over the scapular body.
a. 1 and 3 only
b. 1 and 2 only
c. 1, 2, and 3 only
d. 3 and 4 only


C

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