Slipping forward and backwards have different meanings. The vertebra above is referenced to the vertebra below. A forward slip of C5 on C6 is called a spondylolisthesis or anterolisthesis of C5-6. If the vertebra above is slid backwards, this is called a retrolisthesis.
“Stair-stepping” generally means a forward slip. Depending upon the degree of slip and the anatomic findings (X-ray and MRI/CT), this could be from injury or from simple degenerative changes. Surgery is warranted for instability, neurological compromise or pain that has failed conservative care and a surgical option is viable. Instability is defined by the amount of slip under load (flexion/extension X-rays). Generally, 3mm of slip is considered as instability but this can vary depending upon the circumstances.
Dr. Corenman
PLEASE REMEMBER, THIS FORUM IS MEANT TO PROVIDE GENERAL INFORMATION ON SPINE ANATOMY, CONDITIONS AND TREATMENTS. TO GET AN ACCURATE DIAGNOSIS, YOU MUST VISIT A QUALIFIED PROFESSIONAL IN PERSON.
Donald Corenman, MD, DC is a highly-regarded spine surgeon, considered an expert in the area of neck and back pain. Trained as both a Medical Doctor and Doctor of Chiropractic, Dr. Corenman earned academic appointments as Clinical Assistant Professor and Assistant Professor of Orthopaedic Surgery at the University of Colorado Health Sciences Center, and his research on spine surgery and rehabilitation has resulted in the publication of multiple peer-reviewed articles and two books.
