Core Insights - Smith+Nephew has introduced a new medial stabilized insert for its LEGION Total Knee System, reflecting a significant trend in knee arthroplasty procedures, with medial stabilized inserts increasing from 4% in 2018 to 32% in 2023 [1][4] Product Development - The new medial stabilized design allows for use with or without the Posterior Cruciate Ligament (PCL), indicating a shift from Posterior Stabilized (PS) designs to more bone-conservative Cruciate Retaining (CR) femoral designs [2] - The medial stabilized design features a larger anterior medial lip and medial pivot kinematics that mimic the natural knee [3] Market Trends - US registry data shows that one in three total knee replacements now utilize a medial stabilized design, highlighting a growing preference among surgeons for solutions that provide natural kinematics and improved patient satisfaction [4] - The LEGION TKS has over 20 years of clinical success, and the new insert aligns with rapidly growing market trends for advanced knee solutions [6] Strategic Positioning - The LEGION Medial Stabilized TKS is positioned as a leading option in the market, combining advanced kinematics, porous fixation, and integration with technologies like the CORI Surgical System [4][7] - The medial stabilized insert will be available in the US on a limited basis, with a full commercial release planned for 2025 and an introduction in Canada in 2026 [7]