The influence of different connecting rod configurations on the stability of the Ilizarov Frame: A biomechanical study

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dc.contributor.advisor Laubscher, Maritz en_ZA
dc.contributor.author Thiart, Gerhard en_ZA
dc.date.accessioned 2018-02-13T08:39:17Z
dc.date.available 2018-02-13T08:39:17Z
dc.date.issued 2017 en_ZA
dc.identifier.uri http://hdl.handle.net/11427/27557
dc.description.abstract Background: The Ilizarov external fixator (IEF) is frequently used in trauma and elective orthopaedics. Many of its biomechanical variables (ring size; wire diameter; wire number; half pins versus wires; etc.) and their influence on stability and stiffness have been investigated. There is however a paucity in the literature regarding the influence of the connecting rod numbers and configurations between the rings on IEF stability. Objectives: Primarily to compare the stability between four and three rod IEF configurations. Secondarily to assess the difference in stability between symmetrical and asymmetrical spacing of the IEF rods. Methods: A custom jig was designed to facilitate mounting of a basic two ring IEF in a hydraulic press. Controlled centre and off centre (thus simulated bending) axial loading was then applied across the frame. The configurations were loaded up to 4000 Newtons. The frame deformation was plotted and the data was then analysed and interpreted. Results: Negligible differences were observed between different four and three rod configurations as long as the applied force at the loading point (LP) was within the area of support (AOS) created by the rods. The different four rod constructs were always more stable than the three rod constructs during bending. Conclusions: There is comparable stiffness between a four rod and a three rod IEF construct as long as the loading point (LP) is within the area of support (AOS) created by the rods. A four rod IEF is stiffer than a three rod IEF in bending. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Orthopaedic Surgery en_ZA
dc.title The influence of different connecting rod configurations on the stability of the Ilizarov Frame: A biomechanical study en_ZA
dc.type Thesis en_ZA
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Health Sciences en_ZA
dc.publisher.department Department of Health and Rehabilitation Sciences en_ZA
dc.type.qualificationlevel Masters en_ZA
dc.type.qualificationname MMed en_ZA
uct.type.filetype Text
uct.type.filetype Image


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