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Evolution® Medial-Pivot Knee

Most people don’t think twice about walking to the kitchen or climbing a set of stairs – until knee pain makes even the simplest movement feel impossible. For your patients, every step is a reminder of how much their mobility, independence, and quality of life have changed.

Your work changes that. Restoring a patient’s ability to move without hesitation isn’t just about fixing a joint – it’s about giving them back the freedom to work, to stay active, and to return to the everyday moments that make life full. It’s not just a procedure. It’s a path back to living.

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The Evolution® Medial-Pivot Knee System is designed to do exactly that.

  • Answers the limitations of traditional implants by delivering superior flexion stability, anatomic motion, and wear–limiting design characteristics.
  • A natural feeling knee
  • Backed by over 25 years of clinical success and global registry data
  • Trusted by leading orthopaedic surgeons worldwide


For surgeons, the Evolution® Medial-Pivot Knee offers a system that’s intuitive to implant and consistently delivers excellent outcomes. For patients, it means a knee that feels more like their own – with less pain, greater confidence, and a faster return to the life they love.

Improved stability and validated outcomes

The Evolution® Medial-Pivot Knee System is built upon a legacy of 95% patient satisfaction with 98.8% survivorship at 17 years1, and features a design that enhances quadriceps efficiency, allowing for improved proprioception.

More Evolution® Medial-Pivot Knee features

Natural kinematics

To achieve postoperative satisfaction, patients want their implant to deliver high functionality and a more natural feeling. The single-radius design of the Evolution® Knee System provides stability through all phases of flexion. AP translation is also decreased to help achieve a more normal feel. This represents a dramatic advance over traditional knee replacements, which have been shown to exhibit anterior-posterior translation that can decrease stability and cause early revisions.2,3

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Evolution® NitrX™ Knee System

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.7  The Evolution® NitrX™ knee maintains the kinematic benefits of the medial-pivot design8, resulting in optimal stability.9

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Stable range of motion

It is routine for patients to complain of instability following a traditional knee replacement. Studies also clearly show instability to be the leading cause of early revisions.4-6 By delivering a more secure, highly conforming articulation, the Evolution® Medial-Pivot Knee System provides the kind of stability throughout the range of motion that patients seek.

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Learn more about the Medial-Pivot Knee

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Surgeon insight

"They're able to move their knee in a very natural way. They're able to bend their knee more easily. They feel stable, comfortable and confident about mobilising. The patients have come back with a more positive outcome"
Dr. Tom BarrettOrthopedic Surgeon, George Mediclinic and Geneva Mediclinic Hospitals

Surgeons trust it. Patients feel the difference.

Three patients
Three journeys
One life-changing solution
Dr Mostert, an Orthopaedic Surgeon, talks about the Evolution® Medial-Pivot Knee System
Total knee replacement
Nicola Louw’s story
Life reclaimed:
The knee replacement that gave them freedom
Insights from Orthopaedic Surgeon, Dr Tom Barrett, about the Evolution® Medial-Pivot Knee System
Surgeon’s Perspective: Dr. Ackermann on the Evolution® Medial-Pivot Knee
Back to living after knee replacement: patients share their life-changing stories
Life without pain: two patients share their knee replacement journeys

Three patients
Three journeys
One life-changing solution

Dr Mostert, an Orthopaedic Surgeon, talks about the Evolution® Medial-Pivot Knee System

Total knee replacement
Nicola Louw’s story

Life reclaimed:
The knee replacement that gave them freedom

Insights from Orthopaedic Surgeon, Dr Tom Barrett, about the Evolution® Medial-Pivot Knee System

Resources

  1. Macheras GA et al A long term clinical outcome of the Medial Pivot Knee Arthroplasty System. Knee. 2017 Mar;24(2):447-453
  2. Dennis DA, Komistek RD, Mahfouz MR, Haas BD, Stiehl JB. Multicenter determination of in vivo kinematics after total knee arthroplasty. Clin Orthop Relat Res. 2003
  3. Schmidt R, Komistek RD, Blaha JD, Penenberg BL, Maloney WJ. Fluoroscopic analyses of cruciate-retaining and medial pivot knee implants. Nov;(416):37-57.
  4. Walker PS. Factors affecting the impingement angle of fixed- and mobile bearing total knee replacement, a laboratory study. J Arthroplasty.2007;22(5):745-52.
  5. Bindleglass DF. Current principles of design for cemented and cementless knees. Tech Orthop. 1991;6:80.
  6. Banks S. Knee motions during maximum flexion in fixed and mobile-bearing arthroplasties. Clin Orthop Relat Res. 2003;410:131-8.
  7. MPO Data on file
  8. Dennis DA, Komistek RD, Mahfouz MR, Haas BD, Stiehl JB. Multicenter determination of in vivo kinematics after total kneearthroplasty. Clin Orthop Relat Res. 2003
  9. Freeman MA, Pinskerova V. The movement of the knee studied by magnetic resonance imaging. Clin Orthop Relat Res. 2003;410:35-43