Spondylolisthesis is a condition in which one vertebra slip forward over the one below it. There are different types of spondylolisthesis, including degenerative, isthmic, dysplastic, traumatic, and pathologic.
Degenerative spondylolisthesis is a condition in which one vertebral body slips forward on top of the vertebral body below it, as a result of aging processes that weaken the spine.
Learn about the symptoms of lumbar spondylolysis and how it can sometimes cause spondylolisthesis, which is when one vertebra slips forward on the vertebra below it.