Finite Element Analysis of Total Disc Replacement Wear
Author: Kimberly Shin Ja Mittelholtz
Publisher:
Published: 2007
Total Pages: 122
ISBN-13:
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Author: Kimberly Shin Ja Mittelholtz
Publisher:
Published: 2007
Total Pages: 122
ISBN-13:
DOWNLOAD EBOOKAuthor: Sanghita Bhattacharya
Publisher:
Published: 2011
Total Pages: 237
ISBN-13:
DOWNLOAD EBOOKRelative motion at interacting implant surfaces will generate wear debris over time. Bio-tribological tests serve as an effective pre-clinical tool to investigate device wear characteristics. Wear debris evaluations for artificial discs are done in simulators using the currently published ASTM/ISO loading profiles. However, these tests can primarily compare wear related parameters of one disc design against another as opposed to an in vivo scenario. Additionally, these experiments are time consuming, expensive and labor intensive procedures. Current wear testing standards for artificial discs do not account for parameters such as the influence of anatomic structures and variations in the surgical procedures for disc placement. However, appropriate parametric mathematical modeling may help assess the contributions of these parameters to implant wear. The objective of this study is to address the above mentioned factors and to simulate in-vivo wear parameters as far as practicable. In this approach, the wear phenomena of the total disc replacement (for two different designs - metal on metal and metal on polymer) placed in a ligamentous functional spinal unit (FSU), as opposed the disc alone analyses conducted previously by other researchers was simulated. The models were further modified by sequential addition and removal of spinal structures in order to understand the role of each element with respect to the wear outcome. Furthermore, the effect of the implant placement was studied. This was followed by comparative analyses of load versus displacement control test methodology. A significant difference was noted between the implanted and standalone condition. The standalone test cases were in agreement with the published literature, while the implanted scenario replicated some of the retrieval failure modes. Lift-off at the device interface was observed at the implant interface which was found to be a function of facets and muscle forces. This phenomenon was also reported by other researchers, thus supporting our conclusion. The design factor was found to have more effect in comparison to the material combination. Also, implant positioning demonstrated that wear is sensitive to the device placement. Additionally, during the analysis displacement control mode led to higher wear in comparison to load control for both of the implants. We can summarize by stating that this study demonstrated the need to simulate implant wear in ligamentous finite element model in order to replicate failure modes that are observed during retrievals. Surgical factors are thus crucial with respect to the wear performance of the implant and so should be planned carefully.
Author: Amir Putra Bin Md Saad
Publisher: Springer
Published: 2015-07-13
Total Pages: 63
ISBN-13: 3319217232
DOWNLOAD EBOOKThis book develops and analyses computational wear simulations of the total ankle replacement for the stance phase of gait cycle. The emphasis is put on the relevant design parameters. The book presents a model consisting of three components; tibial, bearing and talar representing their physiological functions.
Author: Z Jin
Publisher: Elsevier
Published: 2014-05-05
Total Pages: 563
ISBN-13: 0857096737
DOWNLOAD EBOOKComputational Modelling of Biomechanics and Biotribology in the Musculoskeletal System reviews how a wide range of materials are modelled and how this modelling is applied. Computational modelling is increasingly important in the design and manufacture of biomedical materials, as it makes it possible to predict certain implant-tissue reactions, degradation, and wear, and allows more accurate tailoring of materials' properties for the in vivo environment. Part I introduces generic modelling of biomechanics and biotribology with a chapter on the fundamentals of computational modelling of biomechanics in the musculoskeletal system, and a further chapter on finite element modelling in the musculoskeletal system. Chapters in Part II focus on computational modelling of musculoskeletal cells and tissues, including cell mechanics, soft tissues and ligaments, muscle biomechanics, articular cartilage, bone and bone remodelling, and fracture processes in bones. Part III highlights computational modelling of orthopedic biomaterials and interfaces, including fatigue of bone cement, fracture processes in orthopedic implants, and cementless cup fixation in total hip arthroplasty (THA). Finally, chapters in Part IV discuss applications of computational modelling for joint replacements and tissue scaffolds, specifically hip implants, knee implants, and spinal implants; and computer aided design and finite element modelling of bone tissue scaffolds. This book is a comprehensive resource for professionals in the biomedical market, materials scientists and mechanical engineers, and those in academia. Covers generic modelling of cells and tissues; modelling of biomaterials and interfaces; biomechanics and biotribology Discusses applications of modelling for joint replacements and applications of computational modelling in tissue engineering
Author: M. Villarraga
Publisher:
Published: 2006
Total Pages: 12
ISBN-13:
DOWNLOAD EBOOKThe purpose of this study was to evaluate the wear and surface damage mechanisms of polyethylene in retrieved CHARITE total disc replacements. The retrieved implants showed evidence of adhesive/abrasive wear mechanisms in the central domed region of the implants. In addition, there was also evidence of macroscopic rim damage, including radial cracking, plastic deformation, and third body damage. The retrieved total disc replacements (TDRs) displayed surface damage observed previously in both hip and knee replacements. The information from this study will be useful for engineers seeking to adequately replicate long-term, clinically relevant damage modes of TDRs using in vitro testing methods.
Author: Amir Kamali
Publisher: MDPI
Published: 2019-07-01
Total Pages: 178
ISBN-13: 3039210785
DOWNLOAD EBOOKJoint replacement is a very successful medical treatment. However, the survivorship of the implants could be adversely affected due to the loss of materials in the form of particles or ions as the bearing surfaces articulate against earch other. The consequent tissue and immune response to the wear products, remain one of the key factors of their failure. Tribology has been defined as the science and technology of interacting surfaces in relative motion and all related wear products (e.g., particles, ions, etc.). Over the last few decades, in an attempt to understand and improve joint replacement technology, the tribological performance of several material combinations have been studied experimentally and assessed clinically. In addition, research has focused on the biological effects and long term consequences of wear products. Improvements have been made in manufacturing processes, precision engineering capabilities, device designs and materials properties in order to minimize wear and friction and maximize component longevity in vivo. This book investigates the in vivo and in vitro performance of the orthopaedic implants and their advanced bearings. Contributions are solicited from the researchers working in the field of biotribology and bioengineering
Author: K. Rajkumar
Publisher: Springer Nature
Published: 2022-09-19
Total Pages: 690
ISBN-13: 9811938954
DOWNLOAD EBOOKThis book presents the select proceedings of the first International Conference on Energy and Materials Technologies (ICEMT) 2021, organized by the Department of Mechanical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, India. It covers the recent technologies in two broad thematic areas: energy and materials. Various topics covered in this book include advanced materials and characterization, mechanical behavior of materials, nanomaterials and nanotechnology, biomaterials, composite materials, environmental-friendly materials, structural materials, advances in aerospace technology, and advanced materials and manufacturing. The book is useful for students, researchers, and professionals in the area of mechanical engineering, especially various domains of materials.
Author: Kevin Healy
Publisher: Elsevier
Published: 2017-05-18
Total Pages: 4865
ISBN-13: 0081006926
DOWNLOAD EBOOKComprehensive Biomaterials II, Second Edition, Seven Volume Set brings together the myriad facets of biomaterials into one expertly-written series of edited volumes. Articles address the current status of nearly all biomaterials in the field, their strengths and weaknesses, their future prospects, appropriate analytical methods and testing, device applications and performance, emerging candidate materials as competitors and disruptive technologies, research and development, regulatory management, commercial aspects, and applications, including medical applications. Detailed coverage is given to both new and emerging areas and the latest research in more traditional areas of the field. Particular attention is given to those areas in which major recent developments have taken place. This new edition, with 75% new or updated articles, will provide biomedical scientists in industry, government, academia, and research organizations with an accurate perspective on the field in a manner that is both accessible and thorough. Reviews the current status of nearly all biomaterials in the field by analyzing their strengths and weaknesses, performance, and future prospects Covers all significant emerging technologies in areas such as 3D printing of tissues, organs and scaffolds, cell encapsulation; multimodal delivery, cancer/vaccine - biomaterial applications, neural interface understanding, materials used for in situ imaging, and infection prevention and treatment Effectively describes the many modern aspects of biomaterials from basic science, to clinical applications
Author: Z. C. Yang
Publisher: CRC Press
Published: 2019-03-14
Total Pages: 302
ISBN-13: 0429592159
DOWNLOAD EBOOKFinite element analysis has been widely applied to study biomedical problems. This book aims to simulate some common medical problems using finite element advanced technologies, which establish a base for medical researchers to conduct further investigations. This book consists of four main parts: (1) bone, (2) soft tissues, (3) joints, and (4) implants. Each part starts with the structure and function of the biology and then follows the corresponding finite element advanced features, such as anisotropic nonlinear material, multidimensional interpolation, XFEM, fiber enhancement, UserHyper, porous media, wear, and crack growth fatigue analysis. The final section presents some specific biomedical problems, such as abdominal aortic aneurysm, intervertebral disc, head impact, knee contact, and SMA cardiovascular stent. All modeling files are attached in the appendixes of the book. This book will be helpful to graduate students and researchers in the biomedical field who engage in simulations of biomedical problems. The book also provides all readers with a better understanding of current advanced finite element technologies. Details finite element modeling of bone, soft tissues, joints, and implants Presents advanced finite element technologies, such as fiber enhancement, porous media, wear, and crack growth fatigue analysis Discusses specific biomedical problems, such as abdominal aortic aneurysm, intervertebral disc, head impact, knee contact, and SMA cardiovascular stent Explains principles for modeling biology Provides various descriptive modeling files
Author:
Publisher: ScholarlyEditions
Published: 2012-01-09
Total Pages: 446
ISBN-13: 1464921636
DOWNLOAD EBOOKPolyenes: Advances in Research and Application: 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Polyenes. The editors have built Polyenes: Advances in Research and Application: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Polyenes in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Polyenes: Advances in Research and Application: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.