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Open AccessArticle

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

1
Laboratorio di Tecnologia Medica, IRCCS Istituto Ortopedico Rizzoli, Via di Barbiano, 1/10, 40136 Bologna, Italy
2
Dipartimento di Ingegneria, Università degli Studi di Perugia, Via G. Duranti 1, 06125 Perugia, Italy
3
V-GER. S.r.l., Via G. Oberdan, 2 - 40055 Castenaso (BO), Italy
*
Author to whom correspondence should be addressed.
Materials 2020, 13(10), 2349; https://doi.org/10.3390/ma13102349
Received: 15 April 2020 / Revised: 15 May 2020 / Accepted: 18 May 2020 / Published: 20 May 2020
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. View Full-Text
Keywords: biotribology; 3D optical wear measurements; 3D scanner; mobile menisci; wear maps biotribology; 3D optical wear measurements; 3D scanner; mobile menisci; wear maps
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Affatato, S.; Valigi, M.C.; Logozzo, S. Knee Wear Assessment: 3D Scanners Used as a Consolidated Procedure. Materials 2020, 13, 2349.

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