CAMRT Radiography Practice Exam

Why should the elbow be flexed at 90 degrees for a lateral elbow view?

1. To minimize patient discomfort

2. To ensure the forearm is parallel to the film

3. To reduce distortion of the joint

4. To compress the elbow fat pads

The correct answer is: To reduce distortion of the joint

For a lateral elbow view, flexing the elbow at 90 degrees plays a crucial role in accurately visualizing the anatomy of the joint. This specific angle minimizes distortion of the joint structures, ensuring that the alignment of the bones, including the humerus and the radius and ulna, is correctly represented on the radiograph. Such positioning allows for a clearer assessment of any potential pathologies, as it demonstrates the joint space without the superimposition that might occur if the joint were positioned differently. In addition to reducing distortion, this positioning helps in obtaining optimal images of the olecranon process and the alignment of the joint, which are critical for diagnosing fractures or other injuries.