{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,7]],"date-time":"2025-11-07T08:49:01Z","timestamp":1762505341461,"version":"3.33.0"},"reference-count":28,"publisher":"SAGE Publications","issue":"3","license":[{"start":{"date-parts":[[2008,3,1]],"date-time":"2008-03-01T00:00:00Z","timestamp":1204329600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Proc Inst Mech Eng H"],"published-print":{"date-parts":[[2008,3,1]]},"abstract":"<jats:p> Hip simulator studies have been carried out extensively to understand and test artificial hip implants in vitro as an efficient alternative to obtaining long-term results in vivo. Recent studies have shown that a ceramic-on-metal material combination lowers the wear by up to 100 times in comparison with a typical metal-on-metal design. The reason for this reduction remains unclear and for this reason this study has undertaken simple tribometer tests to understand the fundamental material loss mechanisms in two material combinations: metal-on-metal and ceramic-on-ceramic. <\/jats:p><jats:p> A simple-configuration reciprocating pin-on-plate wear study was performed under open-circuit potential (OCP) and with applied cathodic protection (CP) in a serum solution using two tribological couples: firstly, cobalt\u2014chromium (Co\u2014Cr) pins against Co\u2014Cr plates; secondly, Co\u2014Cr pins against alumina (Al<jats:sub>2<\/jats:sub>O<jats:sub>3<\/jats:sub>) plates. The pin and plate surfaces prior to and after testing were examined by profilometry and scanning electron microscopy. <\/jats:p><jats:p> The results showed a marked reduction in wear when CP was applied, indicating that total material degradation under the OCP condition was attributed to corrosion processes. The substitution of the Co\u2014Cr pin with an Al<jats:sub>2<\/jats:sub>O<jats:sub>3<\/jats:sub> plate also resulted in a dramatic reduction in wear, probably due to the reduction in the corrosion\u2014wear interactions between the tribological pair. <\/jats:p>","DOI":"10.1243\/09544119jeim363","type":"journal-article","created":{"date-parts":[[2008,4,8]],"date-time":"2008-04-08T00:42:14Z","timestamp":1207615334000},"page":"285-296","source":"Crossref","is-referenced-by-count":21,"title":["Understanding the differences between the wear of metal-on-metal and ceramic-on-metal total hip replacements"],"prefix":"10.1177","volume":"222","author":[{"given":"C G","family":"Figueiredo-Pina","sequence":"first","affiliation":[{"name":"Departamento de Engenharia Mec\u00e2nica, EST Set\u00fabal, Instituto Politecnico de Set\u00fabal, Estefanilha, Set\u00fabal, Portugal"}]},{"given":"Y","family":"Yan","sequence":"additional","affiliation":[{"name":"Institute of Engineering Thermofluids, Surfaces and Interfaces (iETSI), School of Mechanical Engineering, University of Leeds, Leeds, UK"}]},{"given":"A","family":"Neville","sequence":"additional","affiliation":[{"name":"Institute of Engineering Thermofluids, Surfaces and Interfaces (iETSI), School of Mechanical Engineering, University of Leeds, Leeds, UK"}]},{"given":"J","family":"Fisher","sequence":"additional","affiliation":[{"name":"Institute of Medical and Biological Engineering (iMBE), School of Mechanical Engineering, University of Leeds, Leeds, UK"}]}],"member":"179","published-online":{"date-parts":[[2008,4,7]]},"reference":[{"key":"bibr1-09544119JEIM363","doi-asserted-by":"publisher","DOI":"10.1243\/0954411011535939"},{"key":"bibr2-09544119JEIM363","first-page":"46","volume":"80","author":"Seiber H. 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