The effect of internal and external laxity on unconstrained multi-axial knee joint motion in sheep during late swing phase of walking

dc.contributor.advisorDickey, Jim
dc.contributor.advisorHurtig, Mark
dc.contributor.authorMangan, Brian
dc.date.accessioned2020-08-24T15:30:16Z
dc.date.available2020-08-24T15:30:16Z
dc.date.copyright2008
dc.degree.departmentDepartment of Human Biology and Nutritional Sciencesen_US
dc.degree.grantorUniversity of Guelphen_US
dc.degree.nameMaster of Scienceen_US
dc.description.abstractThe purpose of this thesis was to observe and compare the unconstrained motion of ovine stifles under physiologic loading conditions at 20 degrees of flexion upon internal and external moment loading. Nine ovine stifles were used to model the human knee: 5 healthy controls and 4 stifles with osteoarthritis degeneration subsequent to two common human knee injuries (partial medial meniscectomy and complete ACL transections). Each knee was cycled in 1 Nm increments from 3 Nm of internal moment load through to 3 Nm of external moment load using a 6 DOF parallel robot; the unconstrained multi-axial joint motion was recorded. In healthy specimens, the tibia travelled an average of 3.7 mm posteriorly, 1.5 mm distally, 1.5 mm medially, 9.0 deg varusly and 22.9 deg externally. The joint motion in the surgically destabilized stifles was more variable; this was due, in part, to a more lax joint and the presence of osteophytes on the femoral condyles, intercondylar notch and the tibial plateau.
dc.identifier.urihttps://hdl.handle.net/10214/19434
dc.language.isoen
dc.publisherUniversity of Guelphen_US
dc.rights.licenseAll items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectSheep
dc.subjectKnee joint
dc.subjectMulti-axial
dc.subjectOsteoarthritis
dc.subjectWalking
dc.titleThe effect of internal and external laxity on unconstrained multi-axial knee joint motion in sheep during late swing phase of walking
dc.typeThesisen_US

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