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Download or read book Wear and Lubrication of Metal-metal Bearings for Total Hip Arthroplasty written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Author : Frankie W. (Frankie Waisen) Chan
Publisher : National Library of Canada = Bibliothèque nationale du Canada
ISBN 13 :
Total Pages : 418 pages
Book Rating : 4.:/5 (428 download)
Download or read book Wear and Lubrication of Metal-metal Bearings for Total Hip Arthroplasty [microform] written by Frankie W. (Frankie Waisen) Chan and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 1998 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A major current concern in total hip arthroplasty is the generation of polyethylene wear particles at the articulating surfaces and resulting macrophage-mediated, periimplant osteolysis. There has been revived interest in metal-metal bearings for hip implants because of their potential for improved wear performance. Cobalt chromium molybdenum metal-metal hip implants of two materials (alloy types) and two carbon content levels were custom-manufactured and tested in a hip simulator under various loading conditions. In general, accelerated wear occurred within the first million cycles of testing followed by a decrease in wear rate to low steady-state values. The volumetric wear at three million cycles was up to several orders of magnitude less than the wear of conventional metal-polyethylene hip implants. Increased head-cup clearance and surface roughness resulted in increased wear. Independent effects on wear of material and carbon content were not identified. The low wear may be related to fluid film lubrication at the bearing surfaces. A time-varying elastohydrodynamic lubrication model was developed to predict fluid film thickness for the experimental metal-metal hip implants during simulator testing. Decreased clearance, increased lubricant viscosity, and increased cycle frequency resulted in increased film thickness. A strong independent effect on film thickness of load magnitude was not found. The lambda ratio (of film thickness to combined surface roughness) was used to indicate the extent of fluid film lubrication. For the experimental implants, total wear decreased with increasing lambda ratio. These studies provided important new information on the design and testing parameters that control wear performance and lubrication of metal-metal bearings for hip implants." --
Author : Lynne C. Jones
Publisher : Springer Science & Business Media
ISBN 13 : 1461489997
Total Pages : 199 pages
Book Rating : 4.4/5 (614 download)
Download or read book Metal-on-Metal Bearings written by Lynne C. Jones and published by Springer Science & Business Media. This book was released on 2013-10-29 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the background and significance of the factors potentially influencing the clinical and biological outcomes of metal-on-metal hip implants. Metal-on-metal bearings were introduced and evaluated as an alternative to other bearing couples, particularly metal-on-polyethylene, due to their enhanced wear resistance as determined in laboratory testing. Initially, reports of short-term clinical outcomes were favorable and an increasing number of metal-on-metal prostheses were implanted. Subsequently, isolated case findings describing adverse tissue responses around the articulation became the harbinger of an increasing number of reports describing pseudotumors and other significant lymphocytic-based responses associated with metal-on-metal prostheses. Questions have been raised as to whether this is an implant, design, or patient-specific response. The reasons why some patients have a negative biological response and pathology while others do not remain to be determined, but tens of thousands of patients in the US, the UK, and around the world are considered to be at risk. Leading researchers and clinicians describe the issues related to the nature of the biological and pathological responses and the protocols that should be followed to determine if an adverse response is occurring. This book is essential reading for researchers, engineers, and orthopaedic surgeons who are involved in the design, evaluation, and implantation of metal-on-metal prostheses.
Author : Samo Fokter
Publisher : BoD – Books on Demand
ISBN 13 : 9533079908
Total Pages : 630 pages
Book Rating : 4.5/5 (33 download)
Download or read book Recent Advances in Arthroplasty written by Samo Fokter and published by BoD – Books on Demand. This book was released on 2012-01-27 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book was to offer an overview of recent insights into the current state of arthroplasty. The tremendous long term success of Sir Charnley's total hip arthroplasty has encouraged many researchers to treat pain, improve function and create solutions for higher quality of life. Indeed and as described in a special chapter of this book, arthroplasty is an emerging field in the joints of upper extremity and spine. However, there are inborn complications in any foreign design brought to the human body. First, in the chapter on infections we endeavor to provide a comprehensive, up-to-date analysis and description of the management of this difficult problem. Second, the immune system is faced with a strange material coming in huge amounts of micro-particles from the tribology code. Therefore, great attention to the problem of aseptic loosening has been addressed in special chapters on loosening and on materials currently available for arthroplasty.
Author : Karl Knahr
Publisher : Springer Science & Business Media
ISBN 13 : 364219429X
Total Pages : 230 pages
Book Rating : 4.6/5 (421 download)
Download or read book Tribology in Total Hip Arthroplasty written by Karl Knahr and published by Springer Science & Business Media. This book was released on 2011-07-21 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the 2010 EFORT Congress in Madrid, many interesting topics relating to tribology in total hip arthroplasty were discussed during a special day devoted entirely to the subject. So successful was the day, and such was the broad interest in the discussions, that EFORT decided that publication of all the presentations would be warmly welcomed by fellow professionals who were unable to attend. This book is the result. It includes detailed information on the different articulating materials and the wear to which they are subject. The various factors that contribute to bearing performance and control wear are thoroughly evaluated, and careful consideration is given to the technology and design solutions proposed with a view to producing low-wearing hip joints. This book will be of interest both to novices who want to learn more about the field and to experienced orthopaedic surgeons wishing to keep abreast of the latest developments.
Author : N. Matsui
Publisher : Springer Science & Business Media
ISBN 13 : 4431684271
Total Pages : 242 pages
Book Rating : 4.4/5 (316 download)
Download or read book Arthroplasty 2000 written by N. Matsui and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Joint replacement surgery has seen remarkable progress and development in recent years both in prostheses and in surgical technique. A prime concern has been improved durability, for which a major factor is reduction of the polyethylene wear that leads to osteolysis. This book presents an update on the means by which the problems of wear and loosening are being addressed in total hip arthroplasty (THA) and total knee arthroplasty (TKA). Included are chapters on new surgical techniques for difficult cases, nonpolyethylene interfaces for THA, custom hip prostheses, and computer-assisted surgery. Arthroplasty 2000 also takes up current controversial issues such as posterior cruciate substitution versus retention in TKA. With contributions by eminent specialists in total joint replacement in Asia, Europe, and North America, this volume is a valuable reference for all orthopedic surgeons.
Author : Saverio Affatato
Publisher : Elsevier
ISBN 13 : 1782420398
Total Pages : 189 pages
Book Rating : 4.7/5 (824 download)
Download or read book Perspectives in Total Hip Arthroplasty written by Saverio Affatato and published by Elsevier. This book was released on 2014-05-01 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: Total hip arthroplasty, the most commonly performed orthopedic procedure, is used to replace or reconstruct the hip with an artificial joint. Perspectives in Total Hip Arthroplasty outlines developments in technologies and biomaterials used for this procedure, with a focus on the tribological interactions of the materials used. Part one outlines the history of total hip arthroplasty and goes on to explore advances in techniques and biomaterials. Part two focuses on the tribology of materials used to perform this procedure, explaining the impact of wear on the load-bearing surface, a major cause of failure in hip prostheses. Chapters review a range of materials, including modern biomaterials, hybrid materials, metal, ceramic, and polyethylene. The book also discusses the tribological interactions of these materials when used in total hip arthroplasty. Perspectives in Total Hip Arthroplasty is a key resource for clinicians, researchers, and academics interested in the tribology of total hip arthroplasty, as well as materials researchers, engineers, and academics concerned with the tribology of biomaterials. Covers techniques from innovative surgeons and designs from multinational manufacturers, as well as information on improvements in technologies and biomaterials Discusses the tribology of all the major materials used in total hip arthroplasty
Author : Kenneth L. Urish
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (125 download)
Download or read book Metal-on-Metal and Other Bearing Trends Among Fellows of the AAOS written by Kenneth L. Urish and published by . This book was released on 2013 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: To determine what the trends for the use of total hip arthroplasty bearings have been in the United States and how the Food and Drug Administration (FDA) warning on the use of metal on metal bearings have affected surgeon's decisions concerning their use, a survey was performed on the fellows of the American Academy of Orthopaedic Surgeons (AAOS). Two thousand randomly selected practicing fellows were invited to take part in the AAOS 2010 survey. Of those invited, 170 (8.5 % response rate) completed the survey. Confidence interval (CI) values at 95 % were provided for each survey item. There were no significant differences between invitees and respondents in terms of practice setting and gender. The majority of respondents (79.2 %) match their patients' function/activity to the bearing surface used in total hip arthroplasty (THA). Respondents mostly use peer reviewed publications (92.9 %), and personal experience (81.7 %) when making a decision on bearing use in THA. Almost 80 % of the respondents indicated that their hospitals do not limit their choice of implants. Cross-linked polyethylene has been the most used type of bearing surface before 2010 (74.80 %) and currently (78.62 %). Metal-on-metal and ceramic-on-ceramic use decreased; however, there are no significant differences between the uses of all types of bearings before 2010 and currently. Given the current debated issues, 75.6 % of respondents are less likely to use metal-on-metal bearing in the future; 22 % are not affected. The majority of respondents (70.3 %) indicated that ceramic-on-ceramic bearing have fewer wear particles. More than half (56.7 %) indicated that metal-on-metal (MoM) has the longest survivorship. This survey indicated that surgeons responded that their use of MoM bearings will likely decrease in the future but the numbers in this survey show no significant difference in their use before and after the FDA warning for MoM bearings. The survey does show that most surgeons believe that they will have less choice as directed by their hospital or insurance companies in their bearing use in the near future due to health economics and the efforts to decrease cost. Only time will tell if surgeons who indicate the use of MoM will decrease over time actually comes to fruition or if the use of MoM will continue at its current rate. This survey indicates that although the trend shows a decrease in their use, it was not statistically significant.
Author : James A. D'Antonio
Publisher : Springer Science & Business Media
ISBN 13 : 3798515409
Total Pages : 209 pages
Book Rating : 4.7/5 (985 download)
Download or read book Bioceramics and Alternative Bearings in Joint Arthroplasty written by James A. D'Antonio and published by Springer Science & Business Media. This book was released on 2006-03-10 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dear Colleague and Participant in Bioceramics and Alternative Bearings In Joint Arthroplasty: 10*" International BIOLOX® Symposium We are once again very proud that we are able to present to you the proceedings of the Symposiunn as part of your registration materials. This group accomplishment has been made possible by the superb cooperation received from the speakers in sending us their manuscripts on a timely basis as well as by the supporting staff at both CeramTec and at the Publishing House in executing all of the details needed. We specially extend our most heartfelt thanks to the Scientific Committee for their assistance in evaluating and selecting the submissions as well as developing the Symposium program. We are more convinced than ever that the proceedings of this Symposium are a continuation of CeramTec's tradition of providing all members of the orthopedic surgical community with a valuable addition to your reference libraries. We hope that this book will present you with the latest and most up to date source of scientific and clinical information regarding the use of ceramics and other alternative bearings in joint replacement surgery.
Author : Charles Rivière
Publisher : Springer Nature
ISBN 13 : 3030242439
Total Pages : 346 pages
Book Rating : 4.0/5 (32 download)
Download or read book Personalized Hip and Knee Joint Replacement written by Charles Rivière and published by Springer Nature. This book was released on 2020-06-30 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book describes and illustrates the surgical techniques, implants, and technologies used for the purpose of personalized implantation of hip and knee components. This new and flourishing treatment philosophy offers important benefits over conventional systematic techniques, including component positioning appropriate to individual anatomy, improved surgical reproducibility and prosthetic performance, and a reduction in complications. The techniques described in the book aim to reproduce patients’ native anatomy and physiological joint laxity, thereby improving the prosthetic hip/knee kinematics and functional outcomes in the quest of the forgotten joint. They include kinematically aligned total knee/total hip arthroplasty, partial knee replacement, and hip resurfacing. The relevance of available and emerging technological tools for these personalized approaches is also explained, with coverage of, for example, robotics, computer-assisted surgery, and augmented reality. Contributions from surgeons who are considered world leaders in diverse fields of this novel surgical philosophy make this open access book will invaluable to a wide readership, from trainees at all levels to consultants practicing lower limb surgery
Author : Malhotra Rajesh
Publisher : JAYPEE BROTHERS MEDICAL PUBLISHERS PVT. LTD.
ISBN 13 : 9350905418
Total Pages : 658 pages
Book Rating : 4.3/5 (59 download)
Download or read book Mastering Orthopedic Techniques Total Hip Arthroplasty written by Malhotra Rajesh and published by JAYPEE BROTHERS MEDICAL PUBLISHERS PVT. LTD.. This book was released on 2012-12-15 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt: Doody Rating : 3 stars : Editor has put together well-known international Orthopaedic surgeons across the globe for writing down their experience in Hip Arthroplasty. There is extensive bibliography after each chapter which serve as reference material for further research. This book is from the series of Mastering Orthopedic Techniques. This is a comprehensive text for surgeons doing total hip replacement with step-by-step colored illustrations. Detailed descriptions for every possible surgical approach for total hip replacement. Topic covered in the chapters include cover cementation on both.
Author : Joshua J. Jacobs
Publisher : ASTM International
ISBN 13 : 0803124902
Total Pages : 282 pages
Book Rating : 4.8/5 (31 download)
Download or read book Alternative Bearing Surfaces in Total Joint Replacement written by Joshua J. Jacobs and published by ASTM International. This book was released on 1998 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains 18 papers presented at the Symposium on Alternative Bearing Surfaces in Total Joint Replacement, held in San Diego, California, in November 1997. Focus is on development and utilization of alternative bearing surfaces in orthopedics and prosthetics to mitigate the effects of particulate pol
Author : Daniel J. Berry
Publisher : Elsevier Health Sciences
ISBN 13 : 0323568416
Total Pages : 1344 pages
Book Rating : 4.3/5 (235 download)
Download or read book Surgery of the Hip E-Book written by Daniel J. Berry and published by Elsevier Health Sciences. This book was released on 2019-09-24 with total page 1344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offering authoritative, comprehensive coverage of hip surgery, the 2nd Edition of Surgery of the Hip is the definitive guide to hip replacement, other open and arthroscopic surgical procedures, and surgical and nonsurgical management of the hip across the lifespan. Modeled after Insall & Scott Surgery of the Knee, it keeps you fully up to date with the latest research, techniques, tools, and implants, enabling you to offer both adults and children the best possible outcomes. Detailed guidance from expert surgeons assists you with your toughest clinical challenges, including total hip arthroplasty, pediatric hip surgery, trauma, and hip tumor surgery. Discusses new topics such as direct anterior approach for total hip arthroplasty, hip pain in the young adult, and hip preservation surgery. Contains new coverage of minimally invasive procedures, bearing surface selection, management of complications associated with metal and metal bearing surfaces, management of bone loss associated with revision THA, and more. Provides expert, personal advice in "Author’s Preferred Technique" sections. Helps you make optimal use of the latest imaging techniques, surgical procedures, equipment, and implants available. Covers tumors of the hip, hip instability and displacement in infants and young children, traumatic injuries, degenerative joint disorders, and rehabilitation considerations—all from both a basic science and practical clinical perspective.
Author : Preston Russell Beck
Publisher :
ISBN 13 :
Total Pages : 148 pages
Book Rating : 4.:/5 (556 download)
Download or read book Determination of the Effects of Wear on Metal-on-metal Total Hip Arthroplasty written by Preston Russell Beck and published by . This book was released on 2003 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter A. Revell
Publisher : Woodhead Publishing
ISBN 13 : 0128210834
Total Pages : 726 pages
Book Rating : 4.1/5 (282 download)
Download or read book Joint Replacement Technology written by Peter A. Revell and published by Woodhead Publishing. This book was released on 2021-07-28 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third edition of Joint Replacement Technology provides a thoroughly updated review of recent developments in joint replacement technology. Joint replacement is a standard treatment for joint degradation and has improved the quality of life of millions of patients. Collaboration between clinicians and researchers is critical to its continued success and to meet the rising expectations of patients and surgeons.This edition covers a range of updated and new content, ranging from chapters on materials analysis and selection, to methodologies and techniques used for joint replacement and clinical challenges of replacing specific joints. Key topics include tribological considerations and experiments; challenges in joint bearing surfaces; cementless fixation techniques; healing responses to implants. Clinical challenges and perspectives are covered with the aid of case studies.Thanks to its widespread collaboration and international contributors, Joint Replacement Technology, Third Edition is useful for materials scientists and engineers in both academia and the biomedical industry. Chemists, clinicians, and other researchers in this area will also find this text invaluable. This third edition provides an updated comprehensive review of recent developments in joint replacement technology Reviews a range of specific joints, biological and mechanical issues and fixation techniques Includes revised and new content, such as sections on regulatory affairs, AI techniques and 3D printing
Author : William Murphy
Publisher : Springer
ISBN 13 : 1493933051
Total Pages : 676 pages
Book Rating : 4.4/5 (939 download)
Download or read book Handbook of Biomaterial Properties written by William Murphy and published by Springer. This book was released on 2016-06-11 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides tabular and text data relating to normal and diseased tissue materials and materials used in medical devices. Comprehensive and practical for students, researchers, engineers, and practicing physicians who use implants, this book considers the materials aspects of both implantable materials and natural tissues and fluids. Examples of materials and topics covered include titanium, elastomers, degradable biomaterials, composites, scaffold materials for tissue engineering, dental implants, sterilization effects on material properties, metallic alloys, and much more. Each chapter author considers the intrinsic and interactive properties of biomaterials, as well as their appropriate applications and historical contexts. Now in an updated second edition, this book also contains two new chapters on the cornea and on vocal folds, as well as updated insights, data, and citations for several chapters.
Author : Dermott J. McHugh
Publisher :
ISBN 13 :
Total Pages : 276 pages
Book Rating : 4.:/5 (81 download)
Download or read book Application of Retrieval Analysis, Wear Measurement, and Finite Element Anlysis to the Identification of Potential Failure Mechanisms in Metal-on-metal Total Hip Replacements written by Dermott J. McHugh and published by . This book was released on 2012 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Doctors have been performing reconstructive surgery on the hip for over almost 100 years. Over the last 40 years, with the development of new materials and better designs, great strides have been made in the technologies of total joint replacement. The continued success of total hip replacement has led to operations on younger patients, who are placing higher and higher demands on their total hip replacement. Thus, the implants being put in today are expected to last longer than ever before, potentially upwards of 30 years. In the pursuit of these long lasting implants, numerous alternative bearing materials have been considered, one of which consists of a metal-on-metal (MoM) bearing couple using CoCrMo alloy. The first generation of MoM implants were implanted in the mid 20th century, before being eclipsed by the success of polyethylene bearings. While many of these implants saw early failure attributed to variability in manufacturing and surgical practices, other 1st generation MoM implants performed well for 25 years or more. As demand grew for a very low wearing bearing couple, the concept of MoM bearings was revisited. After simulator testing showed extremely low wear rates, a second generation of MoM implants was introduced in the early 2000s, with MoM bearing use reaching as high as 30% in 2010. Clinical performance of these new MoM bearings did not live up to pre-clinical testing. Reports of higher-than-expected revision rates and bearing wear leading to metal toxicity led to the recall of one design, and widespread controversy regarding the performance of all MoM devices. This study aims to identify mechanisms for MoM failure by analyzing a set of 109 MoM retievals obtained by the Dartmouth Biomedical Engineering Center. The bearing surfaces will be examined for evidence of in vivo damage and measured using a coordinate measuring machine. Finally, potential mechanisms for observed damage and wear will be explored with finite element analysis. The retrieval analysis showed that MoM devices were not performing in vivo as expected from in vitro testing. In the 109 MoM devices in the set of retrievals, all of the devices showed unexpected damage. The mean linear wear rate was greater than predicted from in vitro testing. The dam[age and wear on the retrieved bearings indicates that the hydrodynamic lubrication layer was failing in vivo. Damage and wear do not appear to vary between different device designs, indicating that the issue may lie with MoM articulation. Modeling of edge loading scenarios identified roll-out edge loading, a new mechanism of micro-separation and edge loading, as a potential mechanism for damage and wear. Finite element analysis showed that linear damage features commonly observed on retrieved femoral devices could be due to edge loading due to micro-separation. While these edge loading events were not correlated to increased wear within our set of retrievals, it is clear that edge loading due to micro-separation has the potential to damage both bearing surfaces, possibly leading to inferior performance of these devices. The mechanisms of edge loading in all total hip replacement devices need to be fully understood and accounted for during device design and testing.
