Knee Wear Assessment: 3D Scanners Used as a Consolidated Procedure

Saverio Affatato, Maria Cristina Valigi, Silvia Logozzo

Research output: Contribution to journalArticlepeer-review

Abstract

It is well known that wear occurring in polyethylene menisci is a significant clinical problem. At this regard, wear tests on biomaterials medical devices are performed in order to assess their pre-clinical performance in terms of wear, durability, resistance to fatigue, etc. The objective of this study was to assess the wear of mobile total knee polyethylene inserts after an in vitro wear test. In particular, the wear behavior of mobile bearing polyethylene knee configurations was investigated using a knee joint wear simulator. After the completion of the wear test, the polyethylene mobile menisci were analyzed through a consolidated procedure by using 3D optical scanners, in order to evaluate the 3D wear distribution on the prosthesis surface, wear depths, wear rates, amount of material loss and contact areas. The results in terms of wear rates and wear volumes were compared with results of gravimetric tests, finding equivalent achievements.

Original languageEnglish
Pages (from-to)1-12
Number of pages12
JournalMaterials
Volume13
Issue number10
DOIs
Publication statusPublished - May 20 2020

Keywords

  • 3D optical wear measurements
  • 3D scanner
  • biotribology
  • mobile menisci
  • wear maps

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