Spondylolisthesis is a spinal condition that causes lower back pain. It occurs when one of your vertebrae, the bones of your spine, slips out of place onto the vertebra below it. Most of the time, nonsurgical treatment can relieve your symptoms. If you have severe spondylolisthesis, surgery is successful in most cases.

Where is spondylolisthesis located?

In spondylolisthesis, one of the bones in your spine — called a vertebra — slips forward and out of place. This may occur anywhere along the spine, but is most common in the lower back (lumbar spine).

Where is the most common site for spondylolysis?

Spondylolisthesis most commonly occurs at the L5-S1 level with an anterior translation of the L5 vertebral body on the S1 vertebral body. The L4-5 level is the second most common location for spondylolisthesis.