Artificial Disc Replacement

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Degenerative disease of the spine is one of the leading causes of disability in the adult population. Most of these patients are treated non-surgically with analgesia, physiotherapy and injections. The majority will get better without surgery. However, a group of patients will continue to experience pain. The chronic nature of spinal pain can be disabling and interferes with the ability to work and participate in regular daily activities. For these patients, surgical treatment becomes necessary.


Surgical treatment for degenerative spine disease has traditionally been spinal fusion. Unfortunately, there are a number of drawbacks to spinal fusion. Firstly, the bone may not be able to heal or fuse. The average success rate of fusion is approximately 80%. Failure of the bone to fuse may be associated with continued symptoms. Secondly, fusion will cause stiffness and decreased motion of the spine. Thirdly, spinal fusion will cause more stress to be transferred to adjacent levels. This increased stress at the adjacent level may cause further degeneration at the adjacent levels which may lead to additional spine surgery.

Artificial disc replacement is a surgical procedure in which degenerated intervertebral discs in the spinal column are replaced with artificial devices in the lumbar (lower) or cervical (upper) spine. The procedure is used to treat chronic, severe low back pain and cervical pain resulting from degenerative disc disease.

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Expert Author:

Dr Benedict Peng, Island Orthopaedic Consultants