A qualitative holographic study of hemipelvic and acetabular deformation caused by different hip prostheses

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dc.contributor.advisorGryzagoridis, Jassonen_ZA
dc.contributor.authorSpirakis, Athanasios Apostolouen_ZA
dc.date.accessioned2017-10-25T08:41:59Z
dc.date.available2017-10-25T08:41:59Z
dc.date.issued1989en_ZA
dc.date.updated2017-04-05T13:11:57Z
dc.description.abstractAseptic loosening of the components is probably the most common long-term complication resulting in failure of Total Hip Arthroplasty. The mechanical behaviour of bone under load is one of the contributory causes of loosening encountered at the prosthesis/cement/bone interface. The present study dealt with a series of invitro experiments conducted on epoxy resin models of human hemi-pelves with different commercially available acetabular components implanted in them. These are used for the construction of simplified models of the artificial hip joint (three-dimensional) and of the prosthesis/cement/bone acetabular interface (two-dimensional). Loading conditions for the models included tensioning of the simulated abductor muscles for the hemi-pelvic and femoral loading for the prosthesis/cement/bone interface study. The experimental method employed was real-time holographic interferometry, a stress analysis technique recently used in the biomechanical field, which permitted whole-field simultaneously inspection of deformation patterns. The holographic interferograms were interpreted in a qualitative rather than a quantitative manner. The models do not exactly represent the in-vivo situation. Since this study identified high stresses both in the hip bone as well as in the interface (prosthesis/bone) it is suggested that these stresses are implicated in the mechanical pathogenesis of loosening. The observed changes in stress levels detected in our models could serve as a guide for future designs of acetabular prostheses as well as guide a in surgical techniques.en_ZA
dc.identifier.apacitationSpirakis, A. A. (1989). <i>A qualitative holographic study of hemipelvic and acetabular deformation caused by different hip prostheses</i>. (Thesis). University of Cape Town ,Faculty of Health Sciences ,Division of Biomedical Engineering. Retrieved from http://hdl.handle.net/11427/25792en_ZA
dc.identifier.chicagocitationSpirakis, Athanasios Apostolou. <i>"A qualitative holographic study of hemipelvic and acetabular deformation caused by different hip prostheses."</i> Thesis., University of Cape Town ,Faculty of Health Sciences ,Division of Biomedical Engineering, 1989. http://hdl.handle.net/11427/25792en_ZA
dc.identifier.citationSpirakis, A. 1989. A qualitative holographic study of hemipelvic and acetabular deformation caused by different hip prostheses. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Spirakis, Athanasios Apostolou AB - Aseptic loosening of the components is probably the most common long-term complication resulting in failure of Total Hip Arthroplasty. The mechanical behaviour of bone under load is one of the contributory causes of loosening encountered at the prosthesis/cement/bone interface. The present study dealt with a series of invitro experiments conducted on epoxy resin models of human hemi-pelves with different commercially available acetabular components implanted in them. These are used for the construction of simplified models of the artificial hip joint (three-dimensional) and of the prosthesis/cement/bone acetabular interface (two-dimensional). Loading conditions for the models included tensioning of the simulated abductor muscles for the hemi-pelvic and femoral loading for the prosthesis/cement/bone interface study. The experimental method employed was real-time holographic interferometry, a stress analysis technique recently used in the biomechanical field, which permitted whole-field simultaneously inspection of deformation patterns. The holographic interferograms were interpreted in a qualitative rather than a quantitative manner. The models do not exactly represent the in-vivo situation. Since this study identified high stresses both in the hip bone as well as in the interface (prosthesis/bone) it is suggested that these stresses are implicated in the mechanical pathogenesis of loosening. The observed changes in stress levels detected in our models could serve as a guide for future designs of acetabular prostheses as well as guide a in surgical techniques. DA - 1989 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1989 T1 - A qualitative holographic study of hemipelvic and acetabular deformation caused by different hip prostheses TI - A qualitative holographic study of hemipelvic and acetabular deformation caused by different hip prostheses UR - http://hdl.handle.net/11427/25792 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/25792
dc.identifier.vancouvercitationSpirakis AA. A qualitative holographic study of hemipelvic and acetabular deformation caused by different hip prostheses. [Thesis]. University of Cape Town ,Faculty of Health Sciences ,Division of Biomedical Engineering, 1989 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/25792en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDivision of Biomedical Engineeringen_ZA
dc.publisher.facultyFaculty of Health Sciencesen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherArtificial hip jointsen_ZA
dc.subject.otherHip joint - Abnormalitiesen_ZA
dc.subject.otherEquipment failureen_ZA
dc.subject.otherHip prosthesis - Adverse effectsen_ZA
dc.subject.otherHolography - Diagnostic useen_ZA
dc.subject.otherStress, Mechanicalen_ZA
dc.subject.otherBiomedical Engineeringen_ZA
dc.titleA qualitative holographic study of hemipelvic and acetabular deformation caused by different hip prosthesesen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMSc (Med)en_ZA
uct.type.filetype
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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