Spondylolisthesis is a condition whereby one vertebral body slips forward relative to the rest of the normally aligned ones in the spine. This condition may arise from a congenital anomaly whereby the facet joints are disconnected from the rest of the vertebral body allowing for the slip. Spondylolisthesis may also result from trauma or prior surgery where a laminectomy was performed.

Symptoms of this condition include low back pain, leg pain, weakness, difficulty walking long distances, difficulty standing in one position.