Spondylolisthesis is the medical condition wherein one of the vertebras of the patient’s spine shifts forward or backward in regards with the adjoining vertebras. What is spondylolisthesis?Spondylolisthesis is a condition in which one bone in your back (vertebra) slides forward over the bone below it. It most often occurs in. Degenerative spondylolisthesis symptoms include leg pain (sciatica) or a tired feeling down the legs when standing or walking for long periods of time. Learn about the types and symptoms of spondylolisthesis. The most common symptom of spondylolisthesis is lower back pain. Types include dysplastic, isthmic. Introduction. Normally, the bones of the spine (the vertebrae) stand neatly stacked on top of one another. Ligaments and joints support the spine. Spondylolisthesis is a condition that is seen when one spinal vertebrae 'slips' away from another. Spondylolisthesis is most commonly seen with. If the fracture gap at the pars widens and the vertebra shifts forward, then the condition is called spondylolisthesis. Usually, the fifth lumbar vertebra shifts. Isthmic spondylolisthesis can cause leg pain (sciatica) and /or low back pain as one vertebral body slips forward over another and pinches the nerve root. Read about. What is spondylolisthesis? This condition occurs when two vertebrae slip or slide over one another to produce the abnormal positioning of two or more vertebrae in. Spondylolisthesis of the Back. Spondylolisthesis will vary in severity. For this reason, please take the time to read about the following information about this.