Artificial Disc Replacement segmentation by type classifies implants into metal‑on‑metal, ceramic‑on‑ceramic, polymer‑based, and hybrid configurations. Metal‑on‑metal devices, accounting for roughly 40 % of unit sales, are valued for their long‑term durability and established track record, yet concerns over metal ion release limit their expansion in regions with stringent regulatory scrutiny. Ceramic‑on‑ceramic implants represent about 20 % of the market; their low wear profile and radiolucency appeal to surgeons treating younger, active patients, though higher manufacturing costs constrain broader adoption. Polymer‑based discs, primarily polyethylene cores with metal endplates, capture close to 25 % of volume and are favored for their flexibility and lower stiffness, which aligns with physiologic motion but may present fatigue‑related failure risks. Hybrid designs combine metal and polymer or ceramic layers to balance wear resistance and elasticity, contributing the remaining 15 % and reflecting ongoing R&D aimed at optimizing biomechanical performance. Collectively, these type segments delineate the technology landscape that shapes pricing, reimbursement, and investment decisions within the Artificial Disc Replacement market taxonomy.