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Journal of Long-Term Effects of Medical Implants
SJR: 0.332 SNIP: 0.491 CiteScore™: 0.89

ISSN Print: 1050-6934
ISSN Online: 1940-4379

Journal of Long-Term Effects of Medical Implants

DOI: 10.1615/JLongTermEffMedImplants.v20.i1.90
pages 73-79

Patellar Button Wear Patterns in Well-Functioning Total Knee Arthroplasty Retrievals

Jason A. Lindsey
University of Memphis, Department of Biomedical Engineering, Memphis, TN, USA
Devin Conner
University of Memphis, Department of Biomedical Engineering, Memphis, TN, USA
Peter Godleski
University of Tennessee Health Science Center, Campbell Clinic Orthopaedics, Memphis, TN, USA
Brian Perkinson
University of Tennessee Health Science Center, Campbell Clinic Orthopaedics, Memphis, TN, USA
William M. Mihalko
Department of Orthopedic Surgery and Biomedical Engineering, University of Tennessee Health Science Center, Memphis, TN; Campbell Clinic Orthopedics, Germantown, TN
John L. Williams
University of Memphis, Department of Biomedical Engineering; InMotion Orthopaedic Research Center, Memphis TN, USA

ABSTRACT

One of the common reasons for early revision or poor outcome in total knee arthroplasty is due to patellar maltracking, loosening, or pain. The analysis of how the patellofemoral mechanism operates and wears in vivo has not been a focus of many retrieval studies. This paper describes the wear pattern observed on patellar buttons from well-functioning TKA specimens that were harvested as part of a donor program. The attempt was to describe the variations in wear patterns to see if any commonalities existed that may predict a well-functioning patellofemoral mechanism after TKA.