This is a condition in which a vertebra slides forward, relative to the vertebra below. If the vertebra is displaced too far forward, it can narrow the space in the spinal canal, as well put pressure on adjacent nerves. The lumbar spine (lower back) is most commonly affected.

Spondylolisthesis is often found at the same time as spinal stenosis on MRI. The treatment for spondylolisthesis is similar to spinal stenosis, except when surgery is considered. In addition to a laminectomy, spondylolisthesis necessitates a fusion to stabilize the spine. Laminectomy alone is inadequate for proper treatment of this condition. Specifics regarding spinal fusion are determined by the surgeon and explained to the patient during the treatment decision process.

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