Nano-hardness testing of wear particles in sheep knee joints

Allen, Christopher, Peng, Zhongxiao, Yin, Ling, and Carmichael, Emma (2010) Nano-hardness testing of wear particles in sheep knee joints. Materials Science Forum, 654-656 . pp. 2253-2256.

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Abstract

This work aimed to establish a suitable procedure for establishing wear particle hardness and to investigate if the hardness of articular cartilage wear particles increases with increasing grades of osteoarthritis. To achieve the goals a selection of fresh sheep knee joints were obtained and consequently worn in a specially designed wear simulator. Wear particles were then removed from the joint using a syringe and prepared for hardness testing. In order to test the hardness of the wear particle samples nanoindentation was used. Once completed statistical analyses and correlation analyses were performed in order to find any relationships present. This was the first time that the hardness of the wear particles was tested and studied. As a result of the tests performed a general relationship between wear particle hardness and osteoarthritis grade was able to be determined. It was also determined that further work needed to be conducted on the experimental procedure to increase the accuracy of the results obtained.

Item ID: 16051
Item Type: Article (Refereed Research - C1)
Keywords: nano-hardness testing, wear particles, sheep knee joints, articular cartilage
ISSN: 0255-5476
Date Deposited: 27 Apr 2011 01:33
FoR Codes: 09 ENGINEERING > 0913 Mechanical Engineering > 091309 Tribology @ 100%
SEO Codes: 92 HEALTH > 9201 Clinical Health (Organs, Diseases and Abnormal Conditions) > 920116 Skeletal System and Disorders (incl. Arthritis) @ 100%
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