Which of the following signifies that the AP elbow was acquired with the humerus and forearm on the same plane in full extension?
the space between the radius and capitulum is open
radial head, neck, and tuberosity are slightly superimposed
radial head, neck, and tuberosity are free of superimposition
sign of the 3 concentric rings
the space between the radius and capitulum is open
Rationale: A properly positioned AP elbow places the humerus and forearm on the same plane in full extension. This will result in the humeroradial joint being open.
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