Degenerative changes in the spine are often referred to those that cause the loss of normal structure and/or function. Degenerative Spondylolisthesis (DS) is a disorder that causes the forward motion (slip) of one vertebral body over the one below. The term Spondylolisthesis is formed from two Greek words; spondylo meaning vertebra and olisthesis meaning to slide on an incline. DS is most common in the lumbar spine (L4-L5) and may cause low back pain.
