| Neither is universally “better” — they suit different patients. For selected single-level cervical or lumbar problems in patients with good remaining disc and joint quality, artificial disc replacement preserves motion and may reduce stress on neighboring levels. Fusion remains the right choice for instability, deformity, multi-level arthritis, or poor bone quality. |
Medically reviewed by Kanwarpaul Grewal, DO — Orthopedic Spine Surgeon, UCSF Complex Spine & Deformity Fellowship. Reviewed July 2026.
Where disc replacement shines
Younger patients, single-level disease, preserved facet joints — motion preservation is the appeal, and results in the right candidate are excellent.
Where fusion wins
Instability, significant arthritis, deformity, or multi-level disease call for the stability fusion provides. Candidacy is an anatomy question we answer together.
Sources: NASS coverage recommendations; cervical/lumbar arthroplasty vs fusion trials (Spine / JBJS).
