Who is a candidate?
Lumbar disc replacement is considered for a relatively narrow group: patients with disc-related low back pain at one or two levels, confirmed on examination and imaging, with healthy facet joints, adequate bone density, normal spinal alignment, and no significant instability, stenosis, or previous fusion at the level. Most people with low back pain are not candidates, and saying so plainly is part of the assessment.
How the procedure works
The approach is from the front of the abdomen, working between tissue planes to reach the front of the spine without disturbing the back muscles or the nerves behind. The damaged disc is removed and an implant designed to move is placed in the disc space. A vascular or access surgeon frequently assists with the approach.
Recovery
Walking begins the day of surgery. Because the back muscles are not cut, early recovery is often more comfortable than after a posterior operation. Lifting and twisting are restricted while the implant settles and the tissues heal. Return to work depends on the physical demands of your job, and specific restrictions and milestones are given individually.
Benefits and alternatives
Preserving motion is intended to avoid the extra load a fusion places on neighbouring levels. Alternatives include continued non-operative care, targeted injections, and fusion, which remains the more appropriate choice when there is instability, deformity, significant facet arthritis, or nerve compression that the anterior approach cannot address.
Risks
Risks include those of any spine operation (infection, bleeding, nerve injury, persistent symptoms), plus those specific to the anterior approach, including injury to blood vessels or abdominal structures, and in men a small risk of retrograde ejaculation. Implant wear, loosening, or the later need for revision are also discussed before any decision is made.