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The Contribution Of Mobile Bearing Knee Design In Optimizing Tibial Rotation In Total Knee Arthroplasty
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Book Synopsis The Contribution of Mobile Bearing Knee Design in Optimizing Tibial Rotation in Total Knee Arthroplasty by : James B. Stiehl
Download or read book The Contribution of Mobile Bearing Knee Design in Optimizing Tibial Rotation in Total Knee Arthroplasty written by James B. Stiehl and published by . This book was released on 2011 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study assessed the alignment and rotation in mobile bearing total knee arthroplasty (TKA) with the tibia cut first technique using an imageless referencing computer navigation protocol evaluating 41 patients. Prerelease mechanical alignment (MA) averaged 7° varus +/−5° (Range: 8° valgus to 20° varus). Post implant MA was 0.5° varus +/−1.2° (Range: 2° valgus to 3° varus). Post operative radiographic MA was 0.3° varus +/−1.3° (Range: 2° valgus to 2° varus). The baseline measurement of tibial rotation from 0° to 90° flexion was 6°+/−7.2° of tibial internal rotation (Range: 8° external rotation to 19.5° internal rotation). The post implant tibial rotation from 0° to 90° flexion was 3.6°+/−8° of tibial internal rotation (Range: 17° external rotation to 29° internal rotation). Of the baseline group, 25 % demonstrated tibial external rotation with flexion. After TKA, 28 % had tibial external rotation with flexion. When comparing the nominal tibial position in relation to the femur at 0° before and after TKA, the tibial rotation point at 0° moved more externally in 21 % and more internally in the rest with mean change for the overall group of 3.9° of internal rotation (Range: 17° internal to 5° external). This study identified significant changes in knee rotation that may be caused by correction of alignment and deformity. Mobile bearing implants by nature of unconstrained rotation are likely to accommodate these variations. This feature could be defined as a significant advantage over fixed-bearing prostheses.
Book Synopsis LCS® Mobile Bearing Knee Arthroplasty by : Karel J. Hamelynck
Download or read book LCS® Mobile Bearing Knee Arthroplasty written by Karel J. Hamelynck and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Worldwide experience with the Lcs• mobile bearing total knee prosthesis has been unpar alleled both in terms of enduring popularity and outstanding long-term clinical results. Buechel and Pappas's design was based on the principles of; restoring anatomical joint function to as near normal as possible, minimising contact stresses to avoid wear and darn age to the bearing surfaces. and finally the idea that constraint should refiect the need for mobility, to avoid shear stresses and loosening of the implant. In 1977, the LCS® knee was implanted by Dr. Frederick Buechel. This was the first mobile bearing, tri-compartmental knee implant. This was also the first to successfully address the key issues ofloosening, wear and patello-femoral problems associated with earlier designs. The unique design solution was the creation of a common articulating geometry for the tibia and patella on the distal femoral surface. This resulted in a tibial and patellar articulation that was mobile in nature, but with an identical radius of curvature and conformity. The mobile bearing concept was considered sufficiently novel and unproven that the US FDA (Food & Drug Administration) required that it be validated in an Investigational Device Evaluation (IDE). An FDA IDE study involving 25 US surgeons was initiated in 1981. Validation of the clinical success of the device in this study resulted in FDA approval of the LCS, Knee (for cemented, tri-compartmental use) in 1985.
Book Synopsis Total Knee Arthroplasty by : Johan Bellemans
Download or read book Total Knee Arthroplasty written by Johan Bellemans and published by Springer Science & Business Media. This book was released on 2005-08-01 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Take away my knee pain and give me better motion". This is what the arthritic patient expects from a Total Knee Arthroplasty (TKA). By virtue of standardization of the TKA procedure, surgeons can nowadays solve the pain issue for the majority of the patients. Restoration of function is a goal of a different order and forms the scope of this book. The editors confronted today's leading knee surgeons with the limitations of current surgical techniques and technology. They challenged them to define new thresholds of functional capacity after Total Knee Arthroplasty. "A Guide to Get Better Performance in TKA" describes the cutting edge in surgical techniques, prosthetic design and achievement of excellent function for these patients.
Book Synopsis Comprehensive Guide in Knee & Hip Arthroplasty by : Parag Sancheti
Download or read book Comprehensive Guide in Knee & Hip Arthroplasty written by Parag Sancheti and published by Jaypee Brothers Medical Publishers. This book was released on 2019-03-18 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Total Knee Arthroplasty by : Theofilos Karachalios
Download or read book Total Knee Arthroplasty written by Theofilos Karachalios and published by Springer. This book was released on 2015-06-06 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the current clinical practice, outcome and the future development of Total Knee Arthroplasty (TKA) in surgical settings. A major objective of this work is to address “What is the optimal design and fixation of the implants we use for knee arthroplasty reconstruction? What are the gold standards? and, Can we do better?”. In an attempt to throw light on these questions, the authors evaluate data from clinical studies and assess various factors which may influence the long term outcome of TKA. Many variables such as age, severity, implant design and surgical techniques for appropriate component placement and soft tissue balancing are explored in great detail by expert surgeons in the field. Total Knee Arthroplasty: Long Term Outcomes will be a useful resource for recently qualified surgeons in search of an introduction to this topic and for more experienced surgeons seeking an in-depth critical review of current practices in TKA.
Book Synopsis Improving Accuracy in Knee Arthroplasty by : Emmanuel Thienpont
Download or read book Improving Accuracy in Knee Arthroplasty written by Emmanuel Thienpont and published by JP Medical Ltd. This book was released on 2012-07-20 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: Knee arthroplasty is a surgical procedure to replace the weight-bearing surfaces of the knee joint to relieve the pain and disability of osteoarthritis. It may also be performed for other knee diseases such as rheumatoid arthritis and psoriatic arthritis. Improving Accuracy in Knee Arthroplasty discusses new technology allowing the design of implants to be adapted for individual patients. Beginning with an introduction to knee alignment and misalignment, the following sections examine anatomical landmarks in the normal and arthritic knee, instruments, navigation in knee arthroplasty, robotics and soft tissue guided surgery. With contributions from a renowned author and editor team from the UK, USA and Europe, this comprehensive manual includes more than 400 colour images and illustrations. Key Features Comprehensive guide to improving accuracy in knee arthroplasty Discusses new technology allowing implant design to be adapted to individual patients Renowned author and editor team from the UK, USA and Europe More than 400 colour images and illustrations
Book Synopsis Biomechanics of the Knee with Fixed- and Mobile-bearing Implant by : Xiaoqin Li
Download or read book Biomechanics of the Knee with Fixed- and Mobile-bearing Implant written by Xiaoqin Li and published by . This book was released on 2013 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Total knee arthroplasty (TKA) is the one of most reliable treatment of late-stage knee osteoarthritis. Excellent survivorship, function restoration and pain relief have been reported for many designs of TKA that differ in methods of fixation, including fixed-bearing (FB) and mobile-bearing (MB). In FB knee, the polyethylene is mounted firmly on the metal implant tibial component whereas the design of MB knee is intended to lower the risk of tibial component loosening by reducing bearing stress on implant surface with enhanced conformity between tibial and femoral components. MB design is also believed to allow greater range of motion (ROM), and the knees restored by MB implant might be closer to natural knee in terms of knee kinematics. However, the advantages of MB over FB implant have not been clearly demonstrated. Regarding the clinical and radiological differences in outcomes and evaluations between fixed- and mobile-bearing total knee replacements, controversy still exists on which design overall performs better than the other one does. From the prospective of biomechanics, this thesis was to delineate the knee joint motion and loading after TKA surgery with MB and FB implants in daily activities. Twenty-three patients who received TKA surgeries using MB implant and twelve received FB implant were recruited from the same medical center. Ten healthy subjects without history of knee injuries were recruited as the control group. Human motion data and ground reaction force data were collected during level walking, stair ascent and descent. Three-dimensional (3D) knee joint motions were determined from redundant markers using an optimization approach. The 3D knee joint moments and net reaction forces were calculated from motion data and ground reaction data by using an inverse dynamics model of the lower extremity. The results from two groups of individuals receiving different total knee implants were compared. TKA restored but not fully restored the ROM of the knee in sagittal plane, and there was no statistical difference of this functional restoration between two types of implants. Knees with MB implant better constrained the tibia anterior translation when tibia exhibited extension. They also exhibited less femoral internal rotation and knee valgus than knees in FB implants did; therefore, it might have less risk of patellofemoral joint damage or pain under excessive compressive stress in weight-bearing circumstance. The results also demonstrated that MB implants were more effective to reduce knee joint rotation and adduction torque during stance phase. The study provides evidences of that the features of knees in MB implant may be functionally better than FB design to reduce knee joint loading; however, we might not be able to fully attribute the changes in dynamic loading to the design of implant. Other important factors such us performance of surgery, improvements of materials, surface finish techniques of implants, alignment of the components, anatomical and physiological alterations after injuries or surgeries should be considered with respect to longevity and functionality of the knee implants. The best design of implant might be the one with which the surgeon is most comfortable.
Book Synopsis Total Knee Replacement Trends by : Marya
Download or read book Total Knee Replacement Trends written by Marya and published by Elsevier India. This book was released on 2009 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Total Knee Arthroplasty by : James Alan Rand
Download or read book Total Knee Arthroplasty written by James Alan Rand and published by Lippincott Williams & Wilkins. This book was released on 1993 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive reference on total knee arthroplasty describes all surgical techniques and prosthetic designs for primary and revision arthroplasty, discusses every aspect of patient selection, preoperative planning, and intraoperative and postoperative care.
Book Synopsis Personalized Hip and Knee Joint Replacement by : Charles Rivière
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
Book Synopsis Mobile-bearing Total Knee Arthroplasty by :
Download or read book Mobile-bearing Total Knee Arthroplasty written by and published by . This book was released on 2002 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reconstruction of the Knee Joint by : S. Niwa
Download or read book Reconstruction of the Knee Joint written by S. Niwa and published by Springer. This book was released on 1997-04 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: More than 20 years have passed since the International Symposium on Total Knee Replacement was held in London in 1974. Prosthetic design and operative technique have been greatly improved since then, and there is now an accepted standard concept of total knee arthroplasty. Thirteen years after the London symposium, another international symposium on total knee replacement was held, this time in Nagoya, Japan, in 1987. Its ambitious objective was to push forward the frontiers of continuous investigation and improve ment of total knee replacement. The fruits of the individual efforts presented at the Nagoya symposium were published in a volume of proceedings entitled Total Knee Replacement. In the years since 1987, further investigations have been conducted in various parts of the world regarding prosthetic design, fixation, long-term radiological follow-up, biomechanical evaluation, and biomaterials research. In knee ligament reconstruc tion, rapid progress has been made in the past five years in clinical practice and fundamental research by means of arthroscopic surgery and tissue transplantation, and we have come close to establishing a standard treatment. Under these circumstances, an international symposium on knee joint reconstruc tion was planned for 1994, again to be held in Nagoya, to provide ample opportunity for exchanging information and sharing clinical experience from around the world.
Book Synopsis Postgraduate Orthopaedics by : Paul A. Banaszkiewicz
Download or read book Postgraduate Orthopaedics written by Paul A. Banaszkiewicz and published by Cambridge University Press. This book was released on 2012-08-16 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: The must-have book for candidates preparing for the oral component of the FRCS (Tr and Orth).
Book Synopsis Essentials of Cemented Knee Arthroplasty by : Erik Hansen
Download or read book Essentials of Cemented Knee Arthroplasty written by Erik Hansen and published by Springer Nature. This book was released on 2021-12-30 with total page 771 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Editors of “Essentials of Cemented Knee Arthroplasty” have compiled a comprehensive textbook on what many consider the most successful surgical procedure of the century. This book rounds out the compendium previously published by Springer on arthroplasty related topics: “The Well Cemented Total Hip Arthroplasty”, “PMMA Cements”, and “Management of Periprosthetic Joint Infection”. Unique to this text is the high quality contributions from over 160 world wide experts in the field, and provides a unique international perspective on the multifaceted topic of knee replacement surgery. Sections include a focus on Surgical Indications, Implant Design, Novel Technologies, Complications, and Cementing Technique, amongst others. Each Chapter not only draws on the most current literature on the subject, but also crystalizes the most important points into clinically relevant, practically applicable “take home messages”. This singular text is notable for not only its breadth, but also its depth, and will be an invaluable resource for knee arthroplasty surgeons throughout the globe.
Book Synopsis The Unhappy Total Knee Replacement by : Michael T. Hirschmann
Download or read book The Unhappy Total Knee Replacement written by Michael T. Hirschmann and published by Springer. This book was released on 2015-09-15 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the need for improved diagnostic and treatment guidelines for patients in whom total knee arthroplasty (TKA) has had an unsatisfactory outcome. It opens by discussing the basics of TKA and the various causes of failure and pain. Diagnostic aspects are considered in detail, with attention to advances in clinical investigation, laboratory analysis and in particular, imaging techniques. In addition, helpful state of the art diagnostic algorithms are presented. Specific pathology-related treatment options, including conservative approaches and salvage and revision TKA strategies, are then explained, with identification of pitfalls and key points. A series of illustrative cases cover clinical scenarios frequently encountered in daily clinical practice. The evidence-based, clinically focused guidance provided in this book, written by internationally renowned experts, will assist surgeons in achieving the most effective management of these challenging cases.
Book Synopsis On the Design of Tibial Component of Total Knee Arthroplasty by : Tai-Shiang Chang
Download or read book On the Design of Tibial Component of Total Knee Arthroplasty written by Tai-Shiang Chang and published by . This book was released on 1978 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Systematic Review of Complications in TKA Mobile Bearing Knees by : Colin Hopley
Download or read book Systematic Review of Complications in TKA Mobile Bearing Knees written by Colin Hopley and published by . This book was released on 2011 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this paper is to describe the incidence of different types of re-operations following total knee replacement (TKR) with mobile bearing designs and to understand the extent to which they are susceptible to spin-out, a specific complication that may arise with these designs. The design is a systematic review of the incidence of re-operations, classified by the type of re-operation and stratified by study date, reported by clinical publications following TKR with fixed and mobile bearings from a single manufacturer. A search for relevant papers was conducted in online databases including EMBASE and Medline and a manual search of bibliographies. Studies following 8739 mobile bearing knees implanted in 1985-1997 and studies following 3413 mobile bearing knees implanted in 1997-2006 were identified. In the pre- and post-1997 studies, the number of insert revisions was 190 (2.3%) and 16 (0.4%), respectively; the number of revisions of the tibial tray/femoral components was 295 (3.6%) and 43 (1.2%), respectively; the number of revisions for spin-out,dislocation, and instability was 117 (1.4%) and 10 (0.26%), respectively. In the fixed bearing studies there were no spin-outs, but the number of revisions for instability were 6 (0.16%) and 6 (0.21%) in pre- and post-1997 studies. For knees implanted between 1985 and 1997 the incidence of all wear related insert or component revision was 2% in the fixed bearing knee studies and 2% in the mobile bearing knee studies. For knees implanted in 1997-2006, the incidence of all wear related insert or component revision was 0.1% in the fixed bearing knee studies and 0.3% in the mobile bearing knee studies. In conclusion, polyethylene spin-out remains a unique complication of mobile bearing knees symptomatic of instability. Recent trends (after 1997) suggest that improved awareness of surgical technique and/or changes in design (posterior stabilization) have significantly decreased the incidence of this complication, with no evidence of a higher overall risk of revision for instability with contemporary mobile bearing versus fixed bearing knees.
