Radiostereometric measurement of polyethylene deformation pattern in meniscal bearing TKR at 5 years follow-up

Research output: Contribution to journalArticle

Abstract

To determine polyethylene deformation in well-functioning meniscal bearing PCL-retaining total knee prosthesis a quantitative stereophotogrammetric analysis was carried out over 5 years' follow-up. Polyethylene plastic deformation was obtained by tracking the intermarker distance variations of five tantalum beads inserted into the polyethylene prior to surgery in a known position. Plastic deformation occurred in the posteromedial part of the meniscal bearing. Radiostereometric analysis was a useful tool to monitor the load distribution in vivo on the polyethylene of this meniscal bearing prosthesis. This analysis revealed a very similar pattern of plastic deformation in the polyethylene insert of this prosthesis design to the wear pattern revealed with different methodologies in PCL-retaining fixed-bearing prosthesis.

Original languageEnglish
Pages (from-to)142-147
Number of pages6
JournalKnee Surgery, Sports Traumatology, Arthroscopy
Volume16
Issue number2
DOIs
Publication statusPublished - Feb 2008

Keywords

  • Mobile-bearing
  • Polyethylene deformation
  • Polyethylene wear
  • Roentgen stereophotogrammetric analysis
  • TKR

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation
  • Surgery

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