What a Lumbosacral Spine X-ray Shows: This type of X-ray can reveal: Vertebral alignment: How the bones of your spine are positioned. Disc space: The space between the vertebrae where the discs are located. Bone abnormalities: Such as fractures, arthritis, or bone spurs.   Why It's Performed: Doctors use this X-ray to diagnose: Lower back pain Sciatica (pain radiating down the leg) Degenerative disc disease Spondylolisthesis (a vertebra slipping out of place) Spinal stenosis (narrowing of the spinal canal) The Procedure: It's similar to other X-rays: Preparation: You'll remove clothing and jewelry around your lower back. Positioning: You'll be positioned on the X-ray table, and images will be taken from different angles (usually front and side views).   Duration: The procedure is typically quick, lasting only a few minutes.