"The AP view of the humerus is part of the humerus series and is usually taken in a standing position. However, it can also be obtained in a supine position."
"SID"
"The humerus is positioned AP, evidenced by the medial and lateral epicondyles seen in profile and the greater tubercle being seen on the lateral aspect of the humerus. The shaft is abducted away from the patient's body, minimising superimposition"
"orientation "