Medial-pivot knee system

20 years of innovation with 95% patient satisfaction3

Since 1998 MicroPort Orthopedics line of Medial-Pivot products have been used in over 600,000 cases worldwide.

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Countries worldwide with distributors

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Year history of manufacturing orthopedic implants

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New products in the last 3 years

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Reducing length of hospital stay


A variety of proprietary, tissue-sparing approaches for total hip replacement that are designed to reduce length of hospital stay.1


Improved stability & validated outcomes


The Evolution® medial-pivot knee allows patients to get back to their lives faster.2

Evolution® NitrX™ Knee


The Evolution® NitrX™ medial-pivot knee features a titanium niobium nitride (TiNbN) coating that has been shown to reduce the release of cobalt (Co), chromium (Cr), nickel (Ni), and molybdenum (Mb) ions common in standard CoCr implants.4  The Evolution® NitrX™ knee maintains the kinematic benefits of the medial-pivot design5, resulting in optimal stability.6


Every patient is different, and individual results will vary. There are risks and recovery times associated with surgery.

  • References
    1. As compared to traditional surgery. Gofton W, Chow J, Olsen KD, Fitch DA. Thirty-day readmission rate and discharge status following hip arthroplasty using the supercapsular percutaneously-assisted total hip surgical technique. Int Orthop 2015;39:847-51.
    2. Cassard et al, Outpatient TKR – 30 days readmission rate and complications,Full Function Faster meeting, London, 2018.
    3. 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.
    4. MPO Data on file
    5. Dennis DA, Komistek RD, Mahfouz MR, Haas BD, Stiehl JB. Multicenter determination of in vivo kinematics after total kneearthroplasty. Clin Orthop Relat Res. 2003
    6. Freeman MA, Pinskerova V. The movement of the knee studied by magnetic resonance imaging. Clin Orthop Relat Res. 2003;410:35-43