The Evolution® Medial-Pivot knee system is designed to answer the limitations of traditional implants by delivering flexion stability[1], anatomic motion[2], and wear–limiting design characteristics[1] that is based on the natural kinematics of the knee[3,4]. The single-radius design and decreased AP translation of the Evolution® knee system provides stability through all phases of flexion. This represents a dramatic advance over traditional knee replacements that have been shown to exhibit anterior-posterior translation that can decrease stability and cause early revisions[5,6].
1) MPO Data on file – Bench test results not necessarily indicative of clinical performance. 2) Schmidt R. Fluroscopic analyses of cruciate-retaining and medial-pivot knee implants. Clin Orthop Relat Res. 2003;410:139-147. 3) Dennis DA, Komistek RD, Mahfouz MR, Haas BD, Stiehl JB. Multicenter determination of in-vivo kinematics after total knee arthroplasty. Clin Ortho Relat Res. 2003 4) Freeman MA, Pinskerova V. The movement of the knee studied by magnetic resonance imaging. Clin Orthop Relat Res. 2003;(410):35-43. 5) Dennis DA, Komistek RD, Mahfouz MR, Haas BD, Stiehl JB. Conventry award paper: multicenter determination of in vivo kinematics after total knee arthroplasty. Clin Orthop Relat Res 2003;416:37-57. 6) Schmidt R, Komistek RD, Blaha JD, Penenberg BL, Maloney WJ. Fluoroscopic analyses of cruciate-retaining and medial pivot knee implants. Clin Orthop Relat Res 2003;410:139-47.
Our system is compatible with a range of surgical techniques, including mechanical (or traditional) alignment and kinematic alignment, and robotic-assisted methods. The intuitive design allows for flexibility, ensuring surgeons can select the best approach based on patient-specific needs.
The knee system utilises patient-specific alignment guides to improve both soft tissue balance and joint alignment. This reduces the need for extensive intraoperative adjustments and helps ensure proper load distribution across the joint, promoting long-term stability and function.
The implant is made from high-grade cobalt-chromium alloy for the femoral component and ultra-high-molecular-weight polyethylene for the tibial insert. The tibia base is also made from CoCr (same as the femur). These materials are selected for their durability, biocompatibility, and wear resistance, ensuring the longevity of the prosthesis.
The design incorporates optimized articulation surfaces, aiming to reduce friction and extending the life of the implant.
The system comes with a comprehensive, precision-engineered instrumentation set designed to streamline the surgical workflow. Instruments include alignment jigs, reamers, and spacers, which are designed for accuracy and ease of use, minimising surgical time and improving intraoperative outcomes.
Patients who have received the Evolution Medial-Pivot Knee report high satisfaction rates of 95%[1] with 98.8% survivorship at 17 years[2].
1) Van Overschelde PP, Fitch DA. Patient satisfaction at 2 months following total knee replacement using a second generation medial-pivot system: follow-up of 250 consecutive cases. Ann Transl Med. 2016;4(18):339. doi:10.21037/atm.2016.08.41 2) Based on a retrospective study of Advance® Medial-Pivot. Macheras, G.A.; Galanakos, S.P.; Leptsos, P.; Anastasopoulos, P.P.; Papadakis, S. A. A long term clinical outcome of the Medial Pivot Knee Arthroplasty System. The Knee 24 (2017): 447-453.
Yes, our knee replacement system offers a wide range of sizes and options for both men and women. These sizes are available to ensure the implant fits each patient’s unique anatomy, helping to improve outcomes and reduce the need for additional intraoperative modifications.