When performing an erect lateral scoliosis radiograph, which side should be closest to the IR?

In performing an erect lateral scoliosis radiograph, the side with the greatest convexity should be closest to the image receptor (IR). This positioning is critical for accurately capturing the curvature of the spine as it allows for the radiograph to highlight the deformity effectively. By placing the convex side nearest to the IR, it minimizes distortion and provides a clearer representation of the scoliosis curve.

When the convex side is positioned correctly, it enables better visualization of the spine's anatomy and the degree of curvature. This clarity is essential for analysis, diagnosis, and treatment planning. Positioning in this manner ensures that the radiologist can assess the scoliosis accurately and make informed decisions based on the patient's spinal alignment.