Which position is typical for routine frontal lumbar spine imaging?

• A. Supine on the table with knees flexed
• B. Prone
• C. Standing upright
• D. Lateral decubitus

Answer: (A)

Positioning the patient supine on the table with knees flexed is used for routine frontal lumbar imaging because it brings the spine into a more neutral, predictable alignment and reduces natural lumbar lordosis. This minimizes distortion and magnification, helping to visualize the vertebral bodies and intervertebral spaces clearly and consistently. Supine positioning also stabilizes the patient to reduce motion during exposure. Standing upright would accentuate lordosis and alter magnification, while prone or lateral decubitus views serve other specific purposes rather than the standard frontal lumbar projection.