What Is Total Disc Replacement?
Total Disc Replacement (TDR), also called disc arthroplasty, removes a damaged or degenerated spinal disc and replaces it with an artificial implant designed to replicate the natural movement and load distribution of a healthy disc.
Unlike fusion, which permanently locks the vertebrae above and below the treated level together, the artificial disc allows that level to continue functioning naturally within the spine's overall movement pattern.
Cervical Versus Lumbar Disc Replacement
Total Disc Replacement can be performed in two regions of the spine. Cervical disc replacement addresses herniated or degenerated discs in the neck, causing nerve or spinal cord compression.
Lumbar disc replacement addresses disc-related pain in the lower back, most commonly at L4-L5 or L5-S1, in patients where the disc itself is the primary pain generator.
While both procedures share the same core philosophy, they differ in surgical approach, implant design, and recovery profile. Our Staten Island team will determine which type, if either, is appropriate based on a thorough evaluation of each patient's specific anatomy and condition.
The Long-Term Case for Motion Preservation
Fusing a spinal level transfers mechanical load to the vertebrae above and below, accelerating wear at those adjacent segments over time, a phenomenon known as adjacent segment disease.
By preserving natural motion at the treated level, Total Disc Replacement distributes load more normally and may reduce the long-term risk of adjacent segment deterioration. For younger, more active patients with many decades of spinal demands ahead, this distinction carries meaningful long-term implications.