Metacarpophalangeal Joint Metal Implants segmentation by type distinguishes three design families: fixed (non‑modular) implants, modular systems, and patient‑specific custom implants. Fixed implants, comprising approximately 55 % of unit sales, are machined as a single piece and installed without intra‑operative adjustment; their market share is sustained by lower manufacturing complexity and predictable surgical workflow, which translates into reduced procedure time and cost. Modular systems, accounting for roughly 30 % of the market, consist of interchangeable stems, heads, and bushings that permit intra‑operative tailoring of length, offset, and articulation geometry. This flexibility supports a broader anatomical spectrum and is particularly valuable in revision cases, thereby commanding a premium price point. Custom implants, representing the remaining 15 %, are produced through additive manufacturing or CNC milling based on patient‑specific imaging data; they address atypical bone morphology and extreme deformities where off‑the‑shelf components are unsuitable. Although their volume is modest, the higher unit price and reimbursement incentives drive a disproportionate contribution to revenue, underscoring the strategic importance of advanced manufacturing capabilities within the market taxonomy.