Wear distribution detection of knee joint prostheses by means of 3D optical scanners

Saverio Affatato, Maria Cristina Valigi, Silvia Logozzo

Research output: Contribution to journalArticlepeer-review

Abstract

The objective of this study was to examine total knee polyethylene inserts from in vitro simulation to evaluate and display-using a 3D optical scanner-wear patterns and wear rates of inserts exposed to wear by means of simulators. Various sets of tibial inserts have been reconstructed by using optical scanners. With this in mind, the wear behavior of fixed and mobile bearing polyethylene knee configurations was investigated using a knee wear joint simulator. After the completion of the wear test, the polyethylene menisci were analyzed by an innovative 3D optical scanners in order to evaluate the 3D wear distribution on the prosthesis surface. This study implemented a new procedure for evaluating polyethylene bearings of joint prostheses obtained after in vitro wear tests and the proposed new approach allowed quantification of the contact zone on the geometry of total knee prostheses. The results of the present study showed that mobile TKPs (total knee prosthesis) have lower wear resistance with respect to fixed TKPs.

Original languageEnglish
Article number364
Pages (from-to)1-11
Number of pages11
JournalMaterials
Volume10
Issue number4
DOIs
Publication statusPublished - Mar 30 2017

Keywords

  • 3D scanners
  • 3D wear map
  • Knee joint
  • Prostheses design
  • Wear inspection

ASJC Scopus subject areas

  • Materials Science(all)

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