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Lubricants 2015, 3(2), 381-393; doi:10.3390/lubricants3020381

Prediction of Wear in Crosslinked Polyethylene Unicompartmental Knee Arthroplasty

1
Shiley Center for Orthopaedic Research and Education at Scripps Clinic, Scripps Health, 11025 North Torrey Pines Road, Suite 200, La Jolla, CA 92037, USA
2
Stryker Orthopaedics, 325 Corporate Drive Court, Mahwah, NJ 07430, USA
*
Author to whom correspondence should be addressed.
Academic Editors: J. Philippe Kretzer and Amir Kamali
Received: 4 February 2015 / Revised: 23 April 2015 / Accepted: 24 April 2015 / Published: 7 May 2015
(This article belongs to the Special Issue Tribological Performance of Artificial Joints)
View Full-Text   |   Download PDF [384 KB, uploaded 8 May 2015]   |  

Abstract

Wear-related complications remain a major issue after unicompartmental arthroplasty. We used a computational model to predict knee wear generated in vitro under diverse conditions. Inverse finite element analysis of 2 different total knee arthroplasty designs was used to determine wear factors of standard and highly crosslinked polyethylene by matching predicted wear rates to measured wear rates. The computed wear factor was used to predict wear in unicompartmental components. The articular surface design and kinematic conditions of the unicompartmental and tricompartmental designs were different. Predicted wear rate (1.77 mg/million cycles) was very close to experimental wear rate (1.84 mg/million cycles) after testing in an AMTI knee wear simulator. Finite element analysis can predict experimental wear and may reduce the cost and time of preclinical testing. View Full-Text
Keywords: unicompartmental arthroplasty; polyethylene wear; crosslinked polyethylene; finite element analysis; wear simulation unicompartmental arthroplasty; polyethylene wear; crosslinked polyethylene; finite element analysis; wear simulation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Netter, J.; Hermida, J.; Flores-Hernandez, C.; Steklov, N.; Kester, M.; D'Lima, D.D. Prediction of Wear in Crosslinked Polyethylene Unicompartmental Knee Arthroplasty. Lubricants 2015, 3, 381-393.

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