This procedure addresses arthritis of the knee by cutting away all the damaged surfaces and replacing the joint with metal implants, separated by a plastic liner.
Knee arthritis is sometimes localized to just one compartment on the inner or outer part of the knee. Implants have been designed to address isolated arthritic compartments, where the damaged joint surfaces of the inner or outer knee are removed and replaced with metal implants, separated by a plastic liner.
The benefits of a partial knee replacement compared to a total knee replacement include
Shorter operative time
Less blood loss
Improved functional scores
Improved knee range of motion
References
Migliorini F, Tingart M, Niewiera M, Rath B, Eschweiler J. Unicompartmental versus total knee arthroplasty for knee osteoarthritis. Eur J Orthop Surg Traumatol. 2019;29(4):947-955. doi:10.1007/s00590-018-2358-9
Niinimäki T, Eskelinen A, Mäkelä K, Ohtonen P, Puhto AP, Remes V. Unicompartmental knee arthroplasty survivorship is lower than TKA survivorship: a 27-year Finnish registry study. Clin Orthop Relat Res. 2014;472(5):1496-1501. doi:10.1007/s11999-013-3347-2
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