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Dissertations / Theses on the topic 'Artificial hip joints – Materials'

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Published: 10 December 2022

Last updated: 28 January 2023

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1

Bastidos, Amanda Marie. "Failure analysis and materials characterization of hip implants." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2009. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.

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2

Watters, 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.

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3

Bruton, Allison Renee. "Manufacturing and performance of titanium dioxide-ultra high molecular weight polyethylene nanocomposite materials." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 175 p, 2007. http://proquest.umi.com/pqdweb?did=1251905071&sid=1&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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4

Park, Hyuen Me (Mia) Park. "Numerical and experimental analysis of stress behavior of plasma-sprayed Bioglass on titanium /." Full text open access at:, 1996. http://content.ohsu.edu/u?/etd,587.

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5

Liu, Yujing. "Finite element analysis of stress distribution within metal-on-metal joint replacements." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2012. https://ro.ecu.edu.au/theses/471.

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Demand for joint replacements is rising in Australia, driven by a sharp increase in the number of joint problems associated with population aging and obesity. In artificial joints, delamination or failure within the coatings occurs when the stress reaches a critical level, resulting in large wear debris particles appearing on the contact surface between the head and the cup. The process has been described as due to a stress-corrosion-cracking mechanism. Under the same loading, stress increases when the contact area decreases, which happens in the vicinity of wear debris. As such, once wear debris is generated, a catastrophic process could be initiated, resulting in more stress-corrosion-cracking. As such, acquiring a strong coating that will not fail is highly desirable for the applications of hip joint replacement. Failure in a coating layer is normally initiated by excessive local tensile or shear stress; therefore, it is important to clarify the stress distribution within the coating layer under different loading conditions, which is necessary for improving the load-carrying capability of the coating. Unlike previous studies, the multilayer diamond-like carbon (DLC) coatings having high elastic modulus and hardness were analysed in this work. Under normal contact conditions, plastic deformation occurs in contacting materials when the contact pressure is greater than the hardness of the materials. Therefore, high hardness coatings can resist plastic deformation to avoid failure of the coating; in addition, multilayer coatings can decrease stress concentration to avoid cracking. The purpose of this study is to determine whether DLC multilayer coatings can improve the property of the coating against potential cracking in the coating. It has been shown that structurally graded coatings had effect on reducing the contact-induced stress among all the factors considered. It is anticipated that the multilayer design parameters will be important to understand the stress distribution within metal-on-metal (MOM) hip replacements.

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6

Li, Junyan. "Computational biomechanics/biotribological modelling of natural and artificial hip joints." Thesis, University of Leeds, 2013. http://etheses.whiterose.ac.uk/5500/.

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The excellent hip function and potential degeneration are closely linked with the unique structure of the joint cartilage that is principally composed of a solid phase and a fluid phase. Once damaged, the joint may need to be replaced by prosthesis in order to restore function in hip kinematics and kinetics. However, to what extent this can be achieved has yet to be quantified. On the other hand, the role of fluid pressurisation which plays in hip function has been poorly understood. The aim of this thesis was to address these issues. To evaluate the gait abnormality, particularly in terms of hip contact forces, a musculoskeletal model of lower extremity was constructed in a rigid-body dynamics frame, and the hip kinematics and kinetics were determined and cross-compared for a group of asymptomatic total hip replacement (THR) patients, THR patients with symptoms of symptomatic leg length inequality (LLI) and normal healthy people. Significant abnormal patterns in gait kinetics were observed for the asymptomatic THR patients, and this abnormality was greater for the LLI patients. To understand contact mechanics and the associated fluid pressurisation within the hip cartilage, a three dimensional finite element (FE) hip model with biphasic cartilage layers were developed. The protocol was compared to other solvers. A set of sensitivity studies were undertaken to evaluate the influence of model parameters, and then the model was evaluated under a range of loads with different activities. In all the cases, the fluid supported over 90% of the load for a prolonged period, potentially providing excellent hip function and lubrication. The musculoskeletal model and FE joint were combined to investigate the performance of the non-operated joint of the THR / LLI patients during gait which was found to function in a mechanically abnormal but not adverse environment. Lastly, the methodology of the biphasic hip modelling was validated using an experimental porcine hip of hemiarthroplasty. Good agreement was achieved between the FE predictions and the experimental measurement of the contact area.

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7

Kohm, Andrew Christopher. "New techniques for characterization of surface and volumetric wear in total hip athroplasty." Connect to this title online, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1070378403.

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Thesis (Ph. D.)--Ohio State University, 2003.
Title from first page of PDF file. Document formatted into pages; contains xii, 173 p.; also includes graphics Includes bibliographical references (p. 170-173). Available online via OhioLINK's ETD Center

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8

Pendelton, Alice Mae. "Biofluid lubrication for artificial joints." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-3205.

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9

Dyrkacz, Richard Michael Ryan. "Corrosion at the head-neck taper interface of artificial hip joints." Journal of Arthroplasty, 2013. http://hdl.handle.net/1993/30545.

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The aim of this thesis was to determine if the size of the femoral head can influ-ence corrosion at the head-neck taper interface of total hip arthroplasty (THA) prosthe-ses. A hypothesis was developed that large head sizes could result in a greater toggling torque at the head-neck taper interface by increasing the distance between the centre of the femoral head to the centre of the neck taper. This could result in increased micromotion and deteriorate the passive oxide film along the head-neck taper interface; thus, making the taper interface vulnerable to corrosion. A retrieval analysis of 74 THA prostheses studied the corrosion damage at the head-neck taper interface. This study revealed that prostheses featuring 36 mm femoral heads had significantly greater head taper corrosion than prostheses with a 28 mm head. Finite element analysis was performed afterwards to identify if the use of large femoral heads can increase the micromotion at the head-neck taper interface due to a greater toggling torque. This experiment demonstrated that with a larger head size the micromotion at the head-neck taper interface increases. An in vitro corrosion fatigue study was performed afterwards following ASTM F1875-98. When applying an off-axis fatigue load, prostheses featuring a 36 mm femoral head displayed significantly more corrosion damage at the head-neck taper interface than those with a 28 mm femoral head. Axial fatigue loading was also applied; negligible corrosion damage at the head-neck taper interface was discovered in comparison to the prostheses that received an out of axis load. This verifies that the use of large femoral heads can result in increased head-neck taper corrosion due to a greater toggling torque.

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10

Ramjee, Shatish. "Numerical analysis of lubrication in an artificial hip joint." Pretoria : [s.n.], 2007. http://upetd.up.ac.za/thesis/available/etd-09152008-133304/.

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11

Wu, Jun Jie. "The integrity of moulded ultra-high molecular weight polyethylene for joint replacement prostheses." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325574.

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12

Ganguli, Arunima. "The interaction of bisphosphonates in solution and as coatings on hydroxyapatite with osteoblasts and macrophages." Thesis, University of Strathclyde, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248739.

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13

Walter, 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.

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Hip simulators are designed to reproduce the forces and motion patterns of normal walking. In vivo demands on total hip replacements, however, are varied and often more severe than normal walking conditions. It is these severe conditions that often lead to implant failure. This is clinically based research aimed at understanding some of the more severe conditions in hips and the effect that these have on the performance of the total hip replacement. The polyethylene liner can act as a pump in an acetabular component, forcing fluid and wear particles through the holes to the retroacetabular bone causing osteolysis. Ten patients were studied at revision surgery. Pressures were measured in retroacetabular osteolytic lesions while performing pumping manouvers with the hip. Two laboratory experiments were then designed to study pumping mechanisms in vitro. In patients with contained osteolytic lesions, fluid pressure fluctuations could be measured in the lesion in association with the pumping action. Patients with uncontained osteolytic lesions showed no such pressure fluctuations. In the laboratory we identified 3 distinct mechanisms whereby fluid can be pumped from the hip joint to the retroacetabular bone. These pumping effects could be mitigated by improved implant design. Loading of the femoral head against the edge of the acetabular component produces dramatically increased contact pressures particularly in hard-on-hard bearings. In an analysis of 16 retrieved ceramic-on-ceramic bearings we were able to characterise the mechanism of edge loading based on the pattern of edge loading wear on the bearing surface. Finally in a radiographic study of patients with squeaking ceramic-on-ceramic hips. Squeaking was found to be associated with acetabular component malposition. It seems that edge loading or impingement may be an associated factor in these cases.

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14

Opperman, Tertius. "Tribological evaluation of joint fluid and the development of a synthetic lubricant for use in hip joint simulators." Pretoria : [s.n.], 2004. http://upetd.up.ac.za/thesis/available/etd-07282005-083909.

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15

Schumacher, Brian. "An analysis of the femoral head/stem taper lock for orthopaedic prostheses." Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/18927.

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16

Hustosky, Keith T. "Experimental characterization of the mechanical consequences of a debonded total hip stem with an unsupported distal tip." Morgantown, W. Va. : [West Virginia University Libraries], 2002. http://etd.wvu.edu/templates/showETD.cfm?recnum=2510.

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Thesis (Ph. D.)--West Virginia University, 2002.
Title from document title page. Document formatted into pages; contains xi, 95 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 85-92).

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17

Önsten, 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.

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18

Ren, Ying [Verfasser]. "Diamond-like carbon coatings deposited by vacuum arc in artificial hip joints / Ying Ren." Wuppertal : Universitätsbibliothek Wuppertal, 2013. http://d-nb.info/1045118397/34.

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19

Groome, Isabelle Marie-Clement. "Finite element analysis of stress in prosthesis implanted canine femur." Thesis, Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/16990.

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20

Farrar, Richard. "Simulation and analysis of the wear of metal on metal articulations in artificial hip joints." Thesis, University of Leeds, 2001. http://etheses.whiterose.ac.uk/4397/.

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Metal on metal articulations used in hip joint replacement were demonstratedth rough the 1960's and 70's to perform adequately and comparably to metal on plastic articulations but their use then fell into decline as orthopaedic surgeons preferred metal on polyethylene articulations. However, one of the main causes of failure of prosthetic hip joints was then discovered to be aseptic loosening due to particle induced osteolysis, such particles arising from wear of the prosthetic components, and in particular from polyethylene bearing surfaces. Through the late 1980's and the 1990's the concept of metal on metal bearings has re-emerged as one potential solution to the clinical problems associated with polyethylene particle induced osteolysis. In this thesis both theoretical analysis and practical testing using a 12 station MMED hip joint simulator were employed to investigate how metal on metal articulations may be optimized so as to reducet he amount of wear debris generatedth rough their use. Hence, such articulations should function effectively within the environment of a human hip joint when they form part of a total hip replacement design. To this end the effect of diametral clearance, head size, and material composition were both tested and analyzed. Finally a modular clinical design of hip joint replacemenwt as tested to assess its performance. Wear was found to be strongly related to bearing clearance in practical tests as predicted by the theory. A lower limit of clearance existed due to deviations from perfect form which were unavoidable with current manufacturing technology. A band of clearance was defined for 22, 28, and 35mm diameter bearings within which reduced wear was exhibited. Steady state wear rates, following the initial bedding in period, were generally equal regardless of total wear volume. High carbon against high carbon content cobalt chromium articulations did not produce the lowest wear contrary to previous studies in the literature. The mean hardness of, and hardness difference between, bearing surfaces influenced the wear performance of metal on metal articulations. It was possible to design a clinical metal on metal bearing having modular femoral (head and stem) and acetabular (insert and shell) components with optimized metal on metal articulation. This metal on metal device has been introduced into clinical use throughout the world.

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21

Meng, Qingen. "Elastohyrodynamic lubrication in metal-on-metal artificial hip joints with aspherical bearing surfaces and complex structures." Thesis, University of Leeds, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.535667.

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22

Thyagarajan, Ganesh. "Three-dimensional finite element modeling of total hip arthroplasty--creep under dynamic load." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=1934.

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Thesis (M.S.)--West Virginia University, 2001.
Title from document title page. Document formatted into pages; contains ix, 80 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 75-80).

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23

Kinney, Timothy. "A comparison of modeling techniques using the finite element method to determine local displacements in a human hip /." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/5987.

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Thesis (M.S.)--University of Missouri-Columbia, 2007.
The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on April 14, 2008) Includes bibliographical references.

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24

Wang, Allan W. "Femoral bone remodelling following cemented hip arthroplasty in a sheep model /." Title page, contents and abstract only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09phw2462.pdf.

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25

Burger, Nicolaas Daniel Lombard. "Failure analysis of ultra-high molecular weight polyethyelene acetabular cups." Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-12142006-134036.

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26

Brumby, Scott Andrew. "The effect of surface roughness and a collar on fixation of cemented femoral stems in vivo /." Title page, table of contents and summary only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phb8934.pdf.

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27

Spirakis, Athanasios Apostolou. "A qualitative holographic study of hemipelvic and acetabular deformation caused by different hip prostheses." Master's thesis, University of Cape Town, 1989. http://hdl.handle.net/11427/25792.

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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.

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28

Feldt, Christian E. "Stress shielding minimized in femoral hip implants a finite element model optimized by virtual compatibility." Doctoral diss., University of Central Florida, 2011. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4892.

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Bone mechanics and traditional implant materials produce a recurring problem for patients of total hip arthroplasty (THA): the bone is "shielded" from the loading it has become accustomed to over many years of development. Bone adheres to what is called "Wolff's Law", meaning it is an adaptive structure which adjusts its geometry based on the loads experienced over its life (Pearson; Goldstein). As the new femoral hip implant transmits reduced stresses to the remaining bone, bone tissue atrophies at the interface, permitting loosening of the implant, pain, and thereby obliging additional surgery to correct the issue (Meade). In the present work, a methodology is endeavored for creating an innovative design for femoral hip implants. The approach uncouples the finite element implant model from the bone model, in order to focus solely on expected behavior within the implant while considering the varying material behavior in unique directions and locations. The implant's internal geometry is optimized in order to better match typical, intact bone conditions. The eventual design reduces extreme changes in stresses within remnant bone such that the implant will remain implanted for greater periods of time without additional surgical attention.
ID: 030423147; System requirements: World Wide Web browser and PDF reader.; Mode of access: World Wide Web.; Thesis (Ph.D.)--University of Central Florida, 2011.; Includes bibliographical references (p. 86-91).
Ph.D.
Doctorate
Mechanical, Materials, and Aerospace Engineering
Engineering and Computer Science

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29

Chen, Qing-Li. "Effect of surface topography on hip prosthesis anchorage." Thesis, Queensland University of Technology, 1997.

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30

Madsen, Michael S. "The effect of total hip arthroplasty surgical approach on gait kinematics." 2002. http://www.oregonpdf.org.

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31

Wang, Allan W. (Allan Wen Li). "Femoral bone remodelling following cemented hip arthroplasty in a sheep model / Allan W. Wang." 1998. http://hdl.handle.net/2440/19343.

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Bibliography: leaves 198-219.
xii, 219 leaves : ill. (chiefly col.) ; 30 cm.
Title page, contents and abstract only. The complete thesis in print form is available from the University Library.
Examines the effect of implant design on the femoral bone remodelling response in a sheep cemented hip arthroplasty model. The clinical section of the thesis also indicates the importance of biological factors in the femoral bone remodelling response.
Thesis (Ph.D.)--University of Adelaide, Dept. of Orthopaedics and Trauma, 1998

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32

Wang, Allan W. (Allan Wen Li). "Femoral bone remodelling following cemented hip arthroplasty in a sheep model / Allan W. Wang." Thesis, 1998. http://hdl.handle.net/2440/19343.

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Bibliography: leaves 198-219.
xii, 219 leaves : ill. (chiefly col.) ; 30 cm.
Examines the effect of implant design on the femoral bone remodelling response in a sheep cemented hip arthroplasty model. The clinical section of the thesis also indicates the importance of biological factors in the femoral bone remodelling response.
Thesis (Ph.D.)--University of Adelaide, Dept. of Orthopaedics and Trauma, 1998

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33

Foppiano, Silvia. "Functionally graded bioactive coatings: From fabrication to testing /." 2004. http://wwwlib.umi.com/dissertations/fullcit/3160444.

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34

Brumby, Scott Andrew. "The effect of surface roughness and a collar on fixation of cemented femoral stems in vivo / by Scott Andrew Brumby." Thesis, 1996. http://hdl.handle.net/2440/18921.

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Bibliography: leaves 193-206.
xiii, 206 leaves : ill. (chiefly col.) ; 30 cm.
This thesis investigates the effect of femoral stem surface roughness and a collar on the fixation of cemented hip hemi-arthroplasty femoral stems in an in vivo sheep model up to nine months following implantation. Plain radiography, micromotion between prosthesis and bone during mechanical testing and histology are used.
Thesis (Ph.D.)--University of Adelaide, Dept. of Orthopaedics and Trauma, 1997?

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35

Baloyi, Nkele Martha. "Titanium-Zirconium-Niobium intermetallic composite coatings for orthopaedic applications." 2014. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001501.

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M. Tech. Metallurgical Engineering
Ti6Al4V alloy is the leading material for hip replacement because of its biocompatibility, elastic modulus and good yield strength, but shows poor corrosion and wear properties in simulated body fluid. Thin coatings were fabricated on Ti6Al4V alloy using Zirconium, Niobium and Titanium reinforcements with the aid of Nd:YAG Rofin Sinar laser system. Niobium reinforcement produced the best coating that displayed the best corrosion resistance and percentage increase in wear resistance in simulated body fluid as compared to the substrate. Therefore, this coating will perform best as orthopaedic implant material.

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36

Vahed, Anisa. "An in vitro investigation of the effects of surface corrosion on the metal element content and tensile strength of orthodontic silver brazed stainless steel joints arising from varying exposure periods in Fusayama's artificial saliva." Thesis, 2004. http://hdl.handle.net/10321/37.

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Thesis (M.Tech.: Dental Technology)-Dept. of Dental Technology, Durban Institute of Technology, 2004 xvi, 173 leaves : ill. ; 30 cm
Globally in the field of Dental Technology, brazing continues to be the prevailing joining technique for removable orthodontic appliances. However, the strength of the brazed joint is a growing concern to dental technicians since the commonly employed silver solder brazing material undergoes changes in brazed joint composition (microstructure) thereby enhancing corrosion susceptibility. This ultimately influences the success of orthodontic appliances intra-orally. The objective of this in vitro investigation was therefore to determine the effects of corrosion on the composition and tensile strength of orthodontic silver brazed stainless steel joints after varying exposure periods in Fusayama’s artificial saliva.

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