What is the recommended elbow position for a lateral forearm radiograph?

The recommended elbow position for a lateral forearm radiograph is with the elbow bent at approximately 90 degrees. This positioning allows for optimal visualization of the forearm bones, including the radius and ulna, as well as the alignment of the elbow joint itself. When the elbow is flexed to this degree, it ensures that the two bones are parallel to the imaging plate, reducing distortion and providing a clear image that enhances the diagnostic quality.

A 90-degree bend in the elbow also helps to separate the wrist and elbow joints, further minimizing superimposition of structures that could obscure details necessary for accurate interpretation. In contrast, fully extending the elbow would not only risk foreshortening the appearance of the forearm but could also lead to overlapping of anatomy that might obscure injuries or pathological conditions. Slight flexion or hyperextension may not offer the same clarity or alignment that is needed for precise imaging and evaluation. Thus, a 90-degree bend is a standard practice in radiographic positioning for lateral forearm views.