published_or_final_version / Orthopaedics and Traumatology / Master / Master of Philosophy

The clinical success of Total Hip Arthroplasty is enhanced by matching hip implant geometry to femoral geometry. Traditionally, the shapes of hip implant designs have been based on data collected from patient populations using X-ray, CT Scan, digitized sliced bone, and other physical methods. The morphology of interest and the frame of reference often vary across researchers and the resulting numeric data are difficult to use in a Computer Aided Design package to build an implant model. This goal of this thesis was to develop procedures and automated programs for the design and evaluation of femoral hip implants using CT data. The procedures bridge the gap between patient specific "custom" prosthesis design and the so-called "averaged femur" implant designs. By automating the measurement, orientation and averaging of any user selected grouping of femora, these programs allow construction of an average femur template for small subsets of a population or populations. The programs allow grouping of femora using either dimensional attributes and/or patient attributes such as pathology, ethnic background, etc. The average femur template created for each group can then be used as the design boundary for a discrete implant size. Additional functionality is also provided for comparing average femur templates to their constitutive femora and for comparison of average femur templates against each other. To illustrate that the goals of this theses were realized, an example of the use of the system for a population of 192 Japanese is included in this thesis. The criteria for evaluation of the average femur templates was the gap or interference of the template to that of each constitutive femur along the medial and lateral endosteal contours. Testing 24 template sizes, the average of the worst fitting template to femur combination for each size resulted in a gap or interference of less than 2mm in the metaphysis and less than 4mm proximally.

<p><em>Syfte: </em>Syftet med uppsatsen var att studera förekomst av postoperativt illamående (dag 0-3) hos patienter som genomgått en ortopedisk operation i narkos. Syftet var också att studera om kända riskfaktorer och typ av anestesiform kan relateras till uppkomsten av postoperativt illamående (dag 0-3).<em></em></p><p><em>Metod</em>: Studiens design var en prospektiv kvantitativ icke experimentell studie. Data samlades in genom en enkätundersökning bland ortopedpatienter som opererats under narkos och som uppfyllde inklusionskriterierna. Antalet svarande var 18 av 34 tillfrågade. Resultatet analyserades och sammanställdes deskriptivt i statistikprogrammet SPSS.</p><p><em>Resultat</em>: Resultatet visar att alla patienter som deltog i studien sövdes med en kombination av inhalationsanestesi och intravenös anestesi. Ca en tredjedel av dessa var illamående under studiens gång. Illamåendet uppstod främst under operationsdagen och första dagen efter operation. Inget samband mellan illamående och riskfaktorerna kön, ålder, åksjuka, eller fastetid kunde ses. Dock fanns en tendens till samband mellan illamående och tidigare postoperativt illamående. <em></em></p><p><em>Slutsats:</em><em> </em>Då undersökningsgruppen var för liten och inga säkra slutsatser kunde dras på grund av detta, krävs mer forskning inom detta område.</p> / <p><em>Aim: </em>The aim of this study was to investigate the instance of postoperative nausea in orthopedic patients that has performed an operation in narcosis. The aim was also to examine if well-known risk factors and type of anesthesia could relate to postoperative nausea (day 0-3).</p><p><em>Method:</em> The study design was prospective quantitative non experimental. Data were collected through six week on a ward for traumaortopedic patients. The response rate was 18 out of 34 approached. The results were analyzed and compiled in the descriptive statistics program SPSS.</p><p><em>Findings:</em> The findings show that all the patients that participates anaesthetizes with a combination of inhalation- and intravenous anesthesia. About one-third were nauseous in the process of the study. Nausea was most common in the first two days after operation. There was no correlation between nausea and sex, age, travel-sickness, or fast. A tendency could been seen between nausea and earlier postoperative nausea.</p><p><em>Conclusion:</em> More research requires since the research-group was to tiny, and no certain conclusions could be done on that account.</p>

Syfte: Syftet med uppsatsen var att studera förekomst av postoperativt illamående (dag 0-3) hos patienter som genomgått en ortopedisk operation i narkos. Syftet var också att studera om kända riskfaktorer och typ av anestesiform kan relateras till uppkomsten av postoperativt illamående (dag 0-3). Metod: Studiens design var en prospektiv kvantitativ icke experimentell studie. Data samlades in genom en enkätundersökning bland ortopedpatienter som opererats under narkos och som uppfyllde inklusionskriterierna. Antalet svarande var 18 av 34 tillfrågade. Resultatet analyserades och sammanställdes deskriptivt i statistikprogrammet SPSS. Resultat: Resultatet visar att alla patienter som deltog i studien sövdes med en kombination av inhalationsanestesi och intravenös anestesi. Ca en tredjedel av dessa var illamående under studiens gång. Illamåendet uppstod främst under operationsdagen och första dagen efter operation. Inget samband mellan illamående och riskfaktorerna kön, ålder, åksjuka, eller fastetid kunde ses. Dock fanns en tendens till samband mellan illamående och tidigare postoperativt illamående. Slutsats: Då undersökningsgruppen var för liten och inga säkra slutsatser kunde dras på grund av detta, krävs mer forskning inom detta område. / Aim: The aim of this study was to investigate the instance of postoperative nausea in orthopedic patients that has performed an operation in narcosis. The aim was also to examine if well-known risk factors and type of anesthesia could relate to postoperative nausea (day 0-3). Method: The study design was prospective quantitative non experimental. Data were collected through six week on a ward for traumaortopedic patients. The response rate was 18 out of 34 approached. The results were analyzed and compiled in the descriptive statistics program SPSS. Findings: The findings show that all the patients that participates anaesthetizes with a combination of inhalation- and intravenous anesthesia. About one-third were nauseous in the process of the study. Nausea was most common in the first two days after operation. There was no correlation between nausea and sex, age, travel-sickness, or fast. A tendency could been seen between nausea and earlier postoperative nausea. Conclusion: More research requires since the research-group was to tiny, and no certain conclusions could be done on that account.

Thesis (M.Phil.)--Hong Kong University of Science and Technology, 2003. / Includes bibliographical references (leaves 128-138). Also available in electronic version. Access restricted to campus users.

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Thesis (M.S.)--Indiana University, Dept. of Kinesiology, 2006. / Includes bibliographical references.

Thesis (M.S.)--Indiana University, 2006. / Includes bibliographical references. Also available online (PDF file) by a subscription to the set or by purchasing the individual file.

Thesis (PhD) - Swinburne University of Technology, Industrial Research Institute Swinburne - 2006. Thesis (PhD) - National School of Design, Swinburne University of Technology, 2006. / A thesis submitted to the Industrial Research Institute Swinburne (IRIS) and the National Institute of Design in fulfilment of the requirements for the degree of Doctor of Philosophy, - 2006. Typescript. Includes bibliographical references (p. 192-199).