If you are talking about revising the failed fusion (pseudoarthrosis) level to an artificial disc (ADR), this is not a good idea. The attempted fusion causes fibrosis of the facet capsules in the back of the spine. These facets-now being problematic will not work normally with an artificial disc and normal facets are necessary for proper function of the ADR.
Now if you are talking about a level above or below the prior fusion, an artificial disc can work. There is probably some increased wear that will occur but most likely no artificial disc will last a lifetime.
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.