Design of a Cyclic Sliding, Dynamically Loaded Wear Testing Device for the Evaluation of Total Knee Replacement Materials

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dc.contributor.authorThompson, Matthew Thomasen
dc.contributor.committeecochairReinholtz, Charles F.en
dc.contributor.committeecochairFoy, Jonette Rogersen
dc.contributor.committeememberRobertshaw, Harry H.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2014-03-14T20:42:50Zen
dc.date.adate2001-08-08en
dc.date.available2014-03-14T20:42:50Zen
dc.date.issued2001-07-30en
dc.date.rdate2002-08-08en
dc.date.sdate2001-08-06en
dc.description.abstractDuring normal walking, the relative motion of the human knee involves flexion/extension, anterior/posterior sliding, and medial/lateral rotation. As well, the knee experiences a complex, dynamic loading curve with a peak of up to seven times body weight. However, most wear testing machines that have been used to evaluate total knee replacement materials are unidirectional and/or apply only static force. This thesis presents an alternate wear testing device capable of simulating the most prevalent motions of the knee, and applying physiologically-correct loading to the material interface. By incorporating a CoCr disc, an UHMWPE block, stepping motors, pneumatic components, computer control, and linear tables in an x-y configuration, the device is capable of quickly screening new and alternative materials to UHMWPE before evaluating them on a much more expensive knee simulator. In addition, flexibility of the device allows programming of many different motion and loading configurations permitting materials testing under only certain circumstances, or evaluating the effects on wear of specific motions. Design rationale, development, validation, and future recommendations are presented.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-08062001-153737en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-08062001-153737/en
dc.identifier.urihttp://hdl.handle.net/10919/34371en
dc.publisherVirginia Techen
dc.relation.haspart07-chapter6.pdfen
dc.relation.haspart06-chapter5.pdfen
dc.relation.haspart05-chapter4.pdfen
dc.relation.haspart04-chapter3.pdfen
dc.relation.haspart03-chapter2.pdfen
dc.relation.haspart02-chapter1.pdfen
dc.relation.haspart01-opening.pdfen
dc.relation.haspart08-appendices.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectUHMWPE wearen
dc.subjectwear testing deviceen
dc.subjecttotal knee replacementsen
dc.subjectknee simulatoren
dc.titleDesign of a Cyclic Sliding, Dynamically Loaded Wear Testing Device for the Evaluation of Total Knee Replacement Materialsen
dc.typeThesisen
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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