The Types segment classifies lumbar disc prostheses by their design architecture and material composition, which directly influence clinical outcomes and pricing structures. Metal‑on‑metal implants, typically composed of cobalt‑chrome alloys, provide high load‑bearing capacity and are favored in patients with high activity levels, representing a premium‑priced sub‑segment. Polyethylene‑on‑metal devices combine a metal endplate with a polyethylene core, offering a balance between durability and flexibility, and occupy a mid‑range market position. Ceramic‑based prostheses, though less common, are valued for their biocompatibility and reduced wear debris, targeting a niche of patients with metal sensitivities. Each type contributes to total market volume according to surgeon preference, reimbursement policies, and regional regulatory approvals. Metal‑on‑metal holds the largest share due to its established performance record, while polyethylene‑on‑metal follows, and ceramic‑based remains a small but expanding share as material science advances. Understanding these type distinctions is essential for accurate Lumbar Disc Prosthesis market taxonomy.