Positioning for lateral humerus projection. https://s3-euw1-ap-pe-df-pch-content-public-u.s3.eu-west-1.amazonaws.com/9781315382210/8d4c4481-6132-4e60-99e4-e8058248a27d/content/fig2_45a.jpg"/>

The image receptor is placed in an erect holder.

From the anterior position, the patient is rotated through 90 degrees until the lateral aspect of the injured arm is in contact with the image receptor.

The patient’s arm is then extended backwards and rotated further until the arm is just clear of the rib cage, but still in contact with the image receptor, with the medial and lateral epicondyles at right angles to the image receptor.