Over 25 years ago, MicroPort established the Medial-Pivot Knee design that replicates the natural stability and motion of the knee, while also delivering a functionally-restorative design that offers surgeons an innovative solution to problems such as instability, anterior knee pain, and functional limitations. Now, we’re continuing to innovate total knee replacements with the latest addition of our Kinematic Alignment (KA) technique. 

The Kinematic Alignment surgical technique allows surgeons to duplicate the pre-arthritic native joint line of their patient, as opposed to the more traditional Mechanical Alignment (MA) technique that ignores each patient’s individual anatomy by utilizing non-anatomic cuts. The Mechanical Alignment technique works. However, approximately 20% of knee replacement patients remain unsatisfied with their total knee replacement.2 MicroPort’s Kinematic Alignment technique, combined with the Medial-Pivot design philosophy, strives to address this dissatisfaction which can arise due to instability, stiffness, pain, or a patient’s inability to perform at a high level.2,3,4  

Evolution Medial-Pivot Knee

A Reproducible Technique

Personalize each total knee replacement to each patient by recreating their knee’s normal kinematics. The Kinematic Alignment technique prioritizes the femoral cuts and compensates for wear on the femur to attain the pre-arthritic joint line. When the Evolution® Medial-Pivot Knee is positioned using Kinematic Alignment, each of the core knee axes are addressed, resulting in ligament isometry and balance without disrupting the patient’s ligaments. 

Kinematic Alignment Leave Behind Cover

Personalize Total Knee Replacement

Learn how the benefits of Medial-Pivot kinematics and the Kinematic Alignment technique combine to individualize the knee implantation for each patient.5,6 Download our brochure to learn more:

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Kinematic Alignment Patient Animation

Match Your Patient’s Natural Anatomy

An optimal total knee surgery should be accomplished with minimal resections and releases. The MicroPort Kinematic Alignment technique utilizes mechanical instruments and the “Measure Twice, Cut Once” methodology to restore your patient’s natural anatomy through repeated intra-operative measurement and limited guesswork. By prioritizing the pre-arthritic femoral joint line, and directly tying the tibial resection to the femoral resection through native ligament tension, little to no bony re-cuts or ligament releases are required.

Learn More about the Evolution® Medial-Pivot Knee

Precaution & Disclaimer

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

These surgeons are paid consultants for MicroPort Orthopedics. The opinions expressed are theirs alone and do not necessarily reflect the opinions of MicroPort Orthopedics Inc.

  • References

    1. Pritchett JW. Patients prefer a bicruciate-retaining or the medial pivot total knee prosthesis. J Arthroplasty. 2011 Feb;26(2):224-8. 

    1. Bourne, R. B., Chesworth, B. M., Davis, A. M., Mahomed, N. N., & Charron, K. D. (2010). Patient satisfaction after total knee arthroplasty: who is satisfied and who is not?. Clinical Orthopaedics and Related Research®, 468(1), 57-63. 

    1. Nisar, S., Palan, J., Rivière, C., Emerton, M., & Pandit, H. (2020). Kinematic alignment in total knee arthroplasty. EFORT Open Reviews, 5(7), 380-390. 

    1. Shelton, T. J., Gill, M., Athwal, G., Howell, S. M., & Hull, M. L. (2019). Outcomes in patients with a calipered kinematically aligned TKA that already had a contralateral mechanically aligned TKA. The journal of knee surgery. 

    1. Jeremić, D. V., Massouh, W. M., Sivaloganathan, S., Rosali, A. R., Haaker, R. G., & Rivière, C. (2020). Short-term follow-up of kinematically vs. mechanically aligned total knee arthroplasty with medial pivot components: A case-control study. Orthopaedics & Traumatology: Surgery & Research, 106(5), 921-927. 

    1. Rivière, C., Iranpour, F., Auvinet, E., Howell, S., Vendittoli, P. A., Cobb, J., & Parratte, S. (2017). Alignment options for total knee arthroplasty: a systematic review. Orthopaedics & Traumatology: Surgery & Research, 103(7), 1047-1056.