Dissertations / Theses on the topic 'Total hip replacement – Testing'
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Hussain, Azad. "Characterisation of wear particles genarated during accelerated testing of total hip replacement." Thesis, Queen Mary, University of London, 2004. http://qmro.qmul.ac.uk/xmlui/handle/123456789/1783.
Full textBowsher, John G. "Accelerated wear testing methodologies for total hip replacements." Thesis, Queen Mary, University of London, 2001. http://qmro.qmul.ac.uk/xmlui/handle/123456789/1513.
Full textHerrmann, Sven W. [Verfasser]. "Dynamic Testing of Total Hip and Knee Replacements under Physiological Conditions / Sven W. Herrmann." München : Verlag Dr. Hut, 2015. http://d-nb.info/1079767932/34.
Full textTownsend, Katy Louise. "The Use of Radiographs, Dual-energy X-ray Absorptiometry, Quantitative Computed Tomography and Micro-computed Tomography to Determine Local Cancellous Bone Quality in the Canine Proximal Femur." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1336769521.
Full textAjemian, Stanley V. "Gait changes following total hip replacement." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq24641.pdf.
Full textWalter, William Lindsay School of Biomechanics UNSW. "Severe biomechanical conditions in total hip replacement." Awarded by:University of New South Wales. School of Biomechanics, 2006. http://handle.unsw.edu.au/1959.4/25968.
Full textWarwick, David John. "Deep vein thrombosis after total hip replacement." Thesis, University of Bristol, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283969.
Full textTorabi, Kachousangi Ehsanollah. "Edge loading effect on total hip replacement." Thesis, University of Warwick, 2016. http://wrap.warwick.ac.uk/90967/.
Full textMalik, Khan Aamer. "Validation of computer navigation for total hip replacement." Doctoral thesis, Universitat Autònoma de Barcelona, 2016. http://hdl.handle.net/10803/384238.
Full textINTRODUCTION Even vastly experienced high-volume hip surgeons have been shown to be inaccurate with implant positioning during total hip replacement. Surgeons position the acetabular implants inclination and version, and femoral implants version out of the safe zone in almost 50% of cases. Consequences of implant mal-position are impingement, dislocation, aseptic loosening, wear, osteolysis and pain. These have dramatic effects on the patients’ functional outcome and quality of life. This thesis outlines the validation of an imageless navigation system with a phantom model, and posteriorly clinically, for accurate acetabular and femoral implant positioning during total hip replacement. The information obtained with this numerical reconstruction shifted our traditional surgical technique of placing the acetabulum first towards target numbers, to a femur first combined anteversion technique, which is validated at the end of the study. MATERIALS AND METHODS First, we validated our navigation system with a phantom model which we designed. We compared the readings of the imageless navigation system, and processed Computer Tomography (CT) scanned images of the phantom, with the true values of the phantom models acetabulum. This data was processed using two independent computer based hip reconstruction systems (HipNav® and Orthosoft®). Once robustness of the system was confirmed, clinical studies were undertaken in different cohorts of patients undergoing non-cemented total hip replacement with computer navigation between 2004 and 2009. The surgeon’s accuracy for implant positioning was compared to that of the navigation system. These results were validated by postoperative CT-scans (gold standard for postoperative implant position validation). RESULTS The phantom model confirmed that the Navitack Imageless Computer Navigation System had a precision of 1° and a bias of 0.02° for inclination and a precision of 1.3° and a bias of 0° for anteversion measurements. Clinically, the accuracy of the navigation system for the acetabulum was a precision of 4.4° with a bias of 0.03° for inclination and 4.1° with a bias of 0.73° for anteversion. The experienced surgeons’ precision was 11.5° for inclination and 12.3° for anteversion, whereas the less experienced surgeons’ precision was 13.1° for inclination and 13.9° for anteversion. For the femur implants version, on comparing the navigation systems values to postoperative CT-scans, its precision was 4.8° and bias was 0.2°. On comparing surgeon’s estimates to navigation, their precision was 16.8° with a bias of 0.2°. The distribution of femoral stem version had a wide variability (far from the assumed 15°) from complete retroversion to high anteversion. We confirmed that computer navigation had a precision of less than 5 degrees and bias of less than 1 degree for hip implant positioning, and was always better than that of surgeons. Combined anteversion by postoperative computed tomography scan was 37.6° ± 7° (range, 19°–50°). The combined anteversion with computer navigation was within the safe zone of 25° to 50° in 45 of 47 (96%) hips. CONCLUSIONS We demonstrated that the surgeon, through experience and intuition alone, cannot place implants within the desired positions. Hip replacement using computer navigation is clinically accurate to within 5° for acetabular and femoral implant positioning. There is far greater variability in femoral version of non-cemented implants than previously estimated. Using an accurate validated tool for numerical intraoperative information, we undertook a novel hip reconstruction method described as the combined anteversion technique. We believe it will reduce the risk for impingement and its complications. Long-term studies that validate improved implant survival and cost effectiveness with this expensive technology will help determine its future role in our day-to-day hip surgery
Crawford, Ross William. "Focal femoral osteolysis in cemented total hip replacement." Thesis, University of Oxford, 2000. http://ora.ox.ac.uk/objects/uuid:67914dbd-6405-41a3-b4d6-6baeb8bbf0bf.
Full textCook, Juliette Emma. "Fretting wear of total hip replacement femoral stems." Thesis, University of Exeter, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263286.
Full textLoughenbury, Faye Alexandra. "Minimising leg length inequality after total hip replacement." Thesis, University of Leeds, 2018. http://etheses.whiterose.ac.uk/21329/.
Full textMuller, Scott D. "The femoral cement mantle in total hip arthroplasty." Thesis, University of Newcastle Upon Tyne, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273507.
Full textTimperley, Andrew John. "Early complications relating to the acetabular component after total hip replacement." Thesis, University of Oxford, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.670193.
Full textKipping, Michael. "Wear and degradation of UHMWPE total hip replacement components." Thesis, University of Nottingham, 2009. http://eprints.nottingham.ac.uk/14468/.
Full textFogarty, Declan James. "Postoperative analgesia following spinal anaesthesia for total hip replacement." Thesis, Queen's University Belfast, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261938.
Full textZant, Nikolaus Peter. "Fatigue integrity of reconstructed acetabula in total hip replacement." Thesis, University of Portsmouth, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438851.
Full textIsaac, Graham Hugh. "The tribology of bearings used in total hip replacement." Thesis, University of Leeds, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.713498.
Full textOkoro, Tosan. "Optimising patient function following elective total hip replacement surgery." Thesis, Bangor University, 2013. https://research.bangor.ac.uk/portal/en/theses/optimising-patient-function-following-elective-total-hip-replacement-surgery(11a74fb6-a659-42c1-9333-dbc5e42c3a89).html.
Full textGibson, Clare Naomi. "The effect of personality on recovery from total hip replacement and total knee replacement in patients with osteoarthritis." Thesis, University of Sheffield, 2007. http://etheses.whiterose.ac.uk/6097/.
Full textOtoum, Nesreen. "Medical image processing : applications in ophthalmology and total hip replacement." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/11848.
Full textTechamahamaneerat, S. "Psychological factors and experience of patients undergoing total hip replacement." Thesis, Liverpool John Moores University, 2016. http://researchonline.ljmu.ac.uk/4572/.
Full textDopico, Gonzalez Carolina. "Probabilistic finite element analysis of the uncemented total hip replacement." Thesis, University of Southampton, 2009. https://eprints.soton.ac.uk/68694/.
Full textÖnsten, Ingemar. "Fixation of total hip components in rheumatoid arthritis and srthrosis a radiographic, roentgen stereophotogrammetric, densitometric and histomorphometric study /." Lund : Dept. of Orthopaedics, University of Lund, Malmö General Hospital, 1994. http://books.google.com/books?id=mGVsAAAAMAAJ.
Full textNeander, Gustaf. "Displaced femoral neck fractures : studies on osteosynthesis and total hip arthroplasty /." Stockholm, 2000. http://diss.kib.ki.se/2000/91-628-4167-X/.
Full textWatters, Eamon Patrick John. "Wear properties of artificial hip joint materials." Thesis, Queen's University Belfast, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321968.
Full textApatsidis, Dimitrios P. "The hip joint capsule : mechanical properties and contribution to joint stability in total hip replacement." Thesis, University of Strathclyde, 2002. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21186.
Full textElfick, Alistair Philip David. "A tribological assessment of the porous coated anatomic total hip replacement." Thesis, Durham University, 1999. http://etheses.dur.ac.uk/4574/.
Full textLiu, Chaozong. "In vitro dynamic simulation of interface failure in total hip replacement." Thesis, University of Newcastle Upon Tyne, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.397544.
Full textMcWilliams, Anthony Bernard. "Leg length inequality following total hip replacement : a little understood complication." Thesis, University of Leeds, 2017. http://etheses.whiterose.ac.uk/17048/.
Full textBalck, Friedrich, Maike Lippmann, Csilla Jeszenszky, Klaus-Peter Günther, and Stephan Kirschner. "The influence of optimism on functionality after total hip replacement surgery." Sage, 2016. https://tud.qucosa.de/id/qucosa%3A35605.
Full textEisler, Thomas. "On loosening and revision in total hip arthroplasty /." Stockholm, 2003. http://diss.kib.ki.se/2003/91-7349-545-x/.
Full textSandell, Claire-Louise. "A study of self-reported surgical site infection post total hip or total knee replacement." Thesis, University of Portsmouth, 2012. https://researchportal.port.ac.uk/portal/en/theses/a-study-of-selfreported-surgical-site-infection-post-total-hip-or-total-knee-replacement(ff96dda8-7c00-4e3a-8de2-ade5c54bfd02).html.
Full textCoutts, Fiona Jane. "Analysis of hip and lumbar spine movement during functional activity two years after total hip replacement." Thesis, University of Strathclyde, 2008. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21984.
Full textKhaw, Fu-Meng. "Osseointegration of hydroxyapatite coated femoral prostheses : a clinicopathological and biomechanical study of human autopsy retrieved implants." Thesis, University of Newcastle upon Tyne, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289162.
Full textGood, Victoria Diane. "The tribological significance of the joint fluid analog in a hip joint simulator." Thesis, University of Strathclyde, 2001. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21422.
Full textYung, Kai-cheong, and 翁啟昌. "A retrospective study of changes in sexual behavior after total hip arthroplasty in individuals under 55 years old." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B48334431.
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Hailey, Jacquolyn Lesley. "The influence of storage environment on the fracture behaviour of acrylic bone cement." Thesis, University of Bath, 1993. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336074.
Full textKeisu, Kjell. "The femoral component in total hip arthroplasty : results of uncemented and cemented fixation /." Stockholm, 2001. http://diss.kib.ki.se/2001/91-628-4750-3/.
Full textEbreo, Darren. "The role of metal ions in metal-on-metal total hip replacement." Thesis, University of East Anglia, 2016. https://ueaeprints.uea.ac.uk/59343/.
Full textVarini, Elena <1977>. "Primary stability in cementless total hip replacement: measurement techniques and aided-surgery." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2007. http://amsdottorato.unibo.it/404/.
Full textRevie, Ian Crawford. "The manufacture and evaluation of custom acetabular components for total hip replacement." Thesis, Queen's University Belfast, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286851.
Full textMburu, Gathuru. "Cement keyhole fixation of the acetabular component of a total hip replacement." Thesis, University of Aberdeen, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342193.
Full textPartridge, Susan. "Wear and rim damage of UHMWPE acetabular cups in total hip replacement." Thesis, University of Leeds, 2016. http://etheses.whiterose.ac.uk/17574/.
Full textHuebner, Blake James. "Comparing Total Hip Replacement Drug Treatments for Cost and Length of Stay." Thesis, North Dakota State University, 2015. https://hdl.handle.net/10365/27859.
Full textAl-Zadjali, Najiba. "Computer-aided diagnosis of complications of total hip replacement X-ray images." Thesis, Loughborough University, 2017. https://dspace.lboro.ac.uk/2134/33729.
Full textThompson, Mark S. "The design of a novel hip resurfacing prosthesis." Thesis, Queen Mary, University of London, 2001. http://qmro.qmul.ac.uk/xmlui/handle/123456789/28944.
Full textSafari, Alaleh. "Time dependent flow of biolubricant and suspended particles behavior within total hip replacement." Doctoral thesis, Universitat Politècnica de Catalunya, 2017. http://hdl.handle.net/10803/405947.
Full textEl reemplazo total de cadera (THR) ha sido una de las cirugías más exitosas en el siglo XXI. El polietileno de ultra alto peso molecular (UHMWPE) muestra propiedades mecánicas y tribológicas favorables cuando se utiliza como material de superficie de apoyo para implantes de cadera. Sin embargo, las partículas producidas por el desgaste del UHMWPE hacen que la vida útil de un THR sea un desafío clave. La pérdida ósea (osteólisis) producida por estas partículas de desgaste es una de las causas principales del fracaso total de la artroplastia articular. Además de mejorar la resistencia al desgaste de las superficies de apoyo, a fin de reducir dicho desgaste, también deben investigarse a fondo los mecanismos de distribución de los restos de las partículas desgastadas en las juntas de la prótesis. Estas partículas se distribuyen a través del lubricante en los huecos del implante. El líquido sinovial (SF), un líquido viscoelástico no newtoniano no adelgazante, lubrifica las articulaciones naturales. El comportamiento no-newtoniano de SF se atribuye a su contenido de ácido hialurónico (HA), que es un biopolímero lineal. Los patrones de distribución de estas partículas de desgaste se ven afectados por los comportamientos reológicos especiales de la SF, por parámetros geométricos, por tamaños y formas de partículas y por interacciones entre partículas y fluidos. Por lo tanto, la comprensión de este patrón de distribución es fundamental para minimizar el desgaste del tercer cuerpo del UHMWPE. Según las fuerzas mecánicas de los fluidos, el tamaño y la densidad de las partículas de desgaste sugiere que las partículas de desgaste siguen el movimiento del lubricante. Sin embargo, en cuestión de horas, estas partículas muestran comportamientos específicos dentro del fluido viscoelástico (no visible en el fluido newtoniano), tales como la migración de partículas y la formación de cordones a lo largo de la dirección del flujo. El objetivo principal de este proyecto fue desarrollar y validar un método experimental para evaluar las características de HA y soluciones artificiales SF y el comportamiento de las partículas de desgaste en un flujo de fluido viscoelástico. Se cuantificaron los efectos de diferentes parámetros, tales como la concentración de HA, el contenido de proteína, los tipos de flujo de fluido (constante, inestable, etc.) y las formas de los huecos en el comportamiento de los fluidos, a fin de poder comprender plenamente dichos mecanismos. La velocimetría de imagen de micropartículas (micro-PIV) se aplicó como el método de visualización cuantitativa del flujo en este proyecto. Se realizaron mediciones pin-on-disk como técnica complementaria, para investigar el comportamiento de fricción de una varilla de rotación de UHMWPE contra un disco de cobalto cromo molibdeno (CoCrMo) en presencia de soluciones HA de diversas concentraciones. Este estudio se llevó a cabo para comprender los efectos de la carga dinámica sobre el rendimiento del lubricante, en relación con los de carga estática. Los resultados muestran que bajo condiciones de flujo oscilatorio, los niveles de deformación, las tasas y las distribuciones son parámetros importantes que afectan los comportamientos de flujo de las soluciones de HA. La migración de partículas y la alineación se vieron afectadas por los tamaños de canales, las concentraciones de HA, los tipos de flujo y la inestabilidad elástica de la solución. Los resultados de la medición pin-on-disk sugieren que, en presencia de HA, la carga dinámica sinusoidal no afecta los comportamientos de fricción de UHMWPE con CoCrMo, en comparación con la carga estática.
Stotz, Rudolff Andrea. "Evaluation of Metamizole and Carprofen as postoperative analgesics in canine total hip replacement." Diss., lmu, 2011. http://nbn-resolving.de/urn:nbn:de:bvb:19-127146.
Full textAlfaro, Adrian Jesus. "Early migration and loosening of cemented femoral total hip replacement : an RSA study." Thesis, University of Oxford, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301790.
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