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Kinematic Alignment and Total Knee Arthroplasty

Kinematic Alignment and Total Knee Arthroplasty
A Book

by Hugh Benedict Waterson

  • Publisher : Unknown Publisher
  • Release : 2018
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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The Ten Commandments of Calipered Kinematically Aligned Total Knee Arthroplasty: A Primer for the Orthopedic Surgeon and an Introduction for the Disce

The Ten Commandments of Calipered Kinematically Aligned Total Knee Arthroplasty: A Primer for the Orthopedic Surgeon and an Introduction for the Disce
A Book

by Stephen Howell,Thomas D. Meade

  • Publisher : Lets Go Publish!
  • Release : 2020-12-22
  • Pages : 154
  • ISBN : 9781951562472
  • Language : En, Es, Fr & De
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The modern field of total knee arthroplasty began over 50 years ago in the 1970s when the FDA approved cement for implant fixation, and durable plastic that replaced the meniscus became available. Simultaneously, alignment evolved into two opposing and contentious philosophies, the anatomic approach (forefather of kinematic alignment, ) and the 'cookie-cutter' or mechanical alignment. In 2006, the concept of personalized surgery initiated a paradigm shift away from the philosophy of mechanical alignment to calipered kinematic alignment total knee replacement. Dr. Howell, a professor of biomedical engineering and a sports medicine surgeon, developed the kinematic alignment technique. To perform the surgery, he created the first commercially made patient-specific guides designed to assist the surgeon in setting the components coincident to the patient's pre-arthritic joint lines, which is the kinematic alignment target.In 2007, early adopters' clinical experience, particularly Dr. Meade, persuaded over 300 surgeons to perform more than 20,000 kinematically aligned total knee replacements by 2011. Between 2011 and 2020, many worldwide studies reported that kinematic alignment improves patient satisfaction, function, ease of recovery, soft tissue balance, flexion, and joint-line and limb alignment compared with mechanical alignment. It is a winning approach.This primer uses the familiar concept of the Ten Commandments and selects ten topics for the surgeon to follow. The success of kinematic alignment requires caliper measurements of bone resections and intraoperative recording of verification steps. These recommendations reduce the risk of complications, a topic of great interest to the patient! Patients that research options in total knee replacement surgery will come across the kinematic and mechanical alignment philosophies. The mechanical alignment technique is a 'cookie-cutter' approach that places the components the same way in everybody regardless of their legs' shape. Because the method changes the patient's joint lines, the healthy ligaments are released, making the replaced knee feel unnatural. Kinematic alignment restores the patient's knee alignment before arthritis developed and preserves healthy ligaments, promoting patient satisfaction and high function.We hope this primer is useful for those investigating knee replacement surgery. Those who chose kinematic alignment, ask your surgeon whether they use the caliper and intraoperative verifications to position your new knee optimally!

Calipered Kinematically Aligned Total Knee Arthroplasty

Calipered Kinematically Aligned Total Knee Arthroplasty
Theory, Surgical Techniques and Perspectives

by Stefano A. Bini,Stephen M. Howell,G. Daxton Steele

  • Publisher : Elsevier
  • Release : 2021-09
  • Pages : 224
  • ISBN : 9780323756266
  • Language : En, Es, Fr & De
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Calipered kinematic alignment was proposed by Dr. Stephen M. Howell to enable the accurate and individualized placement of total knee components coincident within ?± 0.5 mm of the patient's pre-arthritic alignment. The aim was to restore the patient's native joint kinematics and thereby address the well documented 20% dissatisfaction when total knee replacement is performed using traditional, or mechanical alignment techniques. With Dr. Stefano A. Bini and Dr. G. Daxton Steele as co-editors, Dr. Howell has curated an?international team of expert surgeons and engineers?to discuss various aspects of the calipered knee alignment technique in short, concise, and well-illustrated chapters.?Each author provides clear, practical guidance?for adopting and implementing calipered kinematic alignment covering manual, patient-specific, navigated, and robotic techniques.?Chapters on component design tailored explicitly for kinematic alignment and showing the close relationship between knee biomechanics and the kinematically aligned TKA help the surgeon manage complex challenges associated with deformity and post-operative complications. Following the introduction of the calipered kinematic alignment technique for total knee arthroplasty, many international studies have shown consistently better patient satisfaction than the traditional mechanical alignment technique. Better function and high long-term implant survival have catalyzed a paradigm shift in total knee replacement philosophy that is being embraced by orthopedic surgeons and innovative implant companies around the world with excellent results. Calipered Kinematically Aligned Knee Arthroplasty is the definitive textbook on the subject and features: Thorough explanations of how the calipered kinematic alignment technique for total knee arthroplasty accurately sets total knee components coincident with?the patient's pre-arthritic alignment and coaligned with the three rotational axes of the native knee. A personalized approach to total knee surgery designed to reconstitute the patient's native biomechanics in contrast?with mechanical alignment that places all patients in the same standard alignment regardless of their constitutional anatomy. Detailed and?well-illustrated descriptions?of manual, navigated, robotic, and patient-specific guide techniques that confirm kinematic alignment with a caliper. Clinical photos, radiographs, and line art throughout the book as well as helpful online technique videos. Key focus topics?such as managing complex deformities, the expected post-operative recovery, and future trends in kinematic alignment. The shared experience and knowledge of international pioneers in the field. An emphasis on a personalized surgical philosophy which enables same-day discharge, reduces pain and opioid use, and promotes quicker recovery, better function and a more natural feeling knee. An enhanced eBook version included with purchase?with access to the text, figures, videos, and references from the book on any desktop or mobile device.

Does Mechanical Alignment in Total Knee Arthroplasty Cause Collateral Ligament Instability and Change Limb and Knee Alignment from Normal?

Does Mechanical Alignment in Total Knee Arthroplasty Cause Collateral Ligament Instability and Change Limb and Knee Alignment from Normal?
A Book

by Yy Gu

  • Publisher : Unknown Publisher
  • Release : 2014
  • Pages : 329
  • ISBN : 9781321016352
  • Language : En, Es, Fr & De
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Background: In mechanically aligned total knee arthroplasty (TKA), there are two strategies for aligning the components in the coronal plane. The first strategy references the mechanical axes of the femur and tibia and sets the limb at a 0℗ʻ hip-knee-ankle angle. The second strategy references the anatomic axes of the femur and tibia and sets the knee at 5° or 7° valgus. However, these strategies may cause undesirable consequences recognized as a tight collateral ligament in 0℗ʻ of extension, instability in a compartment between 0° of extension and 90° of flexion that is uncorrectable by collateral ligament release, and a change in limb and knee alignment from normal. The goal of this research project was to determine the frequency and range of these undesirable consequences. Methods: The TKA was simulated on fifty three-dimensional bone models of normal lower extremities from white subjects. To establish a repeatable projection from which to make the measurements, the simulations were performed on the limb projected in the sagittal, coronal, and axial kinematic planes. In the coronal kinematic plane, mechanically aligned TKA was simulated using each of the two strategies: (1) setting the limb at a 0° hip-knee-ankle angle, and (2) setting knee at 5° or 7° valgus. In the axial kinematic plane, the internal-external rotation of the femoral component was set using each of the four methods: (Method 1) perpendicular to the anteroposterior axis of the trochlear groove), (Method 2) parallel to the transepicondylar axis, (Method 3) 3° externally rotated to the posterior condylar axis, and (Method 4) parallel to the tibial resection at 90° flexion with the use of gap-balancing. Results: The percentage of simulated TKAs that required ≥ 2 mm release of a tight collateral ligament at 0° of extension was 58% with the limb at a 0° hip-knee-ankle angle, 60% with the knee set at 5° valgus, and 64% with the knee set at 7° valgus. For Methods 1-3, the percentage of simulated TKAS that had ≥ 2 mm ligament instability in a compartment between 0° of extension and 90° of flexion that is uncorrectable by collateral ligament release was 56%, 74%, and 42% respectively with the limb set at a 0° hip-knee-ankle angle, 60%, 58%, and 54% respectively with the knee set at 5° valgus, and 64%, 74%, and 48% respectively with the knee set at 7° valgus. Gap balancing Method 4 did not cause ligament when used with any of the coronal alignment strategies. The percentage of simulated TKAS that had ≥ 2° change in limb and knee alignment was 58% with the limb set at a 0° hip-knee-ankle angle, 60% with the knee set at 5° valgus, and 64% with the knee set at 7° valgus. Discussion: Surgeons should be aware when they mechanically align a TKA with the limb set at a 0° hip-knee-ankle angle and the knee set at 5° or 7° valgus with four different methods for setting the internal-external rotation of the femoral component, that they will frequently have to manage a wide range of instabilities that are complex, cumulative, and uncorrectable by collateral ligament release, and a wide range of change in limb and knee alignment from normal. Patients who perceive these changes in stability, limb alignment, and knee alignment may be dissatisfied and require counseling.

The Necessity of Neutral Mechanical Alignment and the Outcome Comparison to Kinematic Alignment in Total Knee Replacement

The Necessity of Neutral Mechanical Alignment and the Outcome Comparison to Kinematic Alignment in Total Knee Replacement
A Review

by 鄧澤銘

  • Publisher : Unknown Publisher
  • Release : 2019
  • Pages : 40
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Calipered Kinematically aligned Total Knee Arthroplasty E-Book

Calipered Kinematically aligned Total Knee Arthroplasty E-Book
Theory, Surgical Techniques and Perspectives

by Stephen M. Howell,Stefano A. Bini,G. Daxton Steele

  • Publisher : Elsevier Health Sciences
  • Release : 2021-06-29
  • Pages : 160
  • ISBN : 0323756271
  • Language : En, Es, Fr & De
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Calipered kinematic alignment was proposed by Dr. Stephen M. Howell to enable the accurate and individualized placement of total knee components coincident within ± 0.5 mm of the patient’s pre-arthritic alignment. The aim was to restore the patient's native joint kinematics and thereby address the well documented 20% dissatisfaction when total knee replacement is performed using traditional, or mechanical alignment techniques. With Dr. Stefano A. Bini and Dr. G. Daxton Steele as co-editors, Dr. Howell has curated an international team of expert surgeons and engineers to discuss various aspects of the calipered knee alignment technique in short, concise, and well-illustrated chapters. Each author provides clear, practical guidance for adopting and implementing calipered kinematic alignment covering manual, patient-specific, navigated, and robotic techniques. Chapters on component design tailored explicitly for kinematic alignment and showing the close relationship between knee biomechanics and the kinematically aligned TKA help the surgeon manage complex challenges associated with deformity and post-operative complications. Following the introduction of the calipered kinematic alignment technique for total knee arthroplasty, many international studies have shown consistently better patient satisfaction than the traditional mechanical alignment technique. Better function and high long-term implant survival have catalyzed a paradigm shift in total knee replacement philosophy that is being embraced by orthopedic surgeons and innovative implant companies around the world with excellent results. Calipered Kinematically Aligned Knee Arthroplasty is the definitive textbook on the subject and features: Thorough explanations of how the calipered kinematic alignment technique for total knee arthroplasty accurately sets total knee components coincident with the patient’s pre-arthritic alignment and coaligned with the three rotational axes of the native knee. A personalized approach to total knee surgery designed to reconstitute the patient’s native biomechanics in contrast with mechanical alignment that places all patients in the same standard alignment regardless of their constitutional anatomy. Detailed and well-illustrated descriptions of manual, navigated, robotic, and patient-specific guide techniques that confirm kinematic alignment with a caliper. Clinical photos, radiographs, and line art throughout the book as well as helpful online technique videos. Key focus topics such as managing complex deformities, the expected post-operative recovery, and future trends in kinematic alignment. The shared experience and knowledge of international pioneers in the field. An emphasis on a personalized surgical philosophy which enables same-day discharge, reduces pain and opioid use, and promotes quicker recovery, better function and a more natural feeling knee.

Simulation-based Stability Tests in Total Knee Arthroplasty

Simulation-based Stability Tests in Total Knee Arthroplasty
Are Component Alignment, Knee Laxity, and Tibiofemoral Contact Forces Related?

by Brooke Kristine Delventhal

  • Publisher : Unknown Publisher
  • Release : 2019
  • Pages : 72
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Total knee arthroplasty (TKA) is known to be a successful procedure that can treat pain and disfunction caused by knee osteoarthritis (KOA). However, approximately 20% of patients are dissatisfied after surgery, with complications that have been linked to variable intraoperative procedures such as prosthetic component alignment and soft-tissue balancing techniques. The concept of kinematic alignment has been introduced to serve as an alternative to traditional mechanical alignment, where all patients’ bone cuts are made in the same way to restore a straight hip-knee-ankle line. Kinematic alignment instead aims to restore the anatomy of the native knee, without the need to balance the soft tissues. While many methods regarding soft-tissue balancing are subjective to surgeon decisions, new technology released by OrthoSensor serves to take tibiofemoral force measurements in each compartment of the knee during a passive range of motion, claiming that equal contact forces within various thresholds presume knee balance. However, biomechanical knee balance is defined using the amount of knee motion resulting from a known applied force, which we have quantified with a novel knee stability device. The purpose of this study was to investigate the relationship of these contact force measurements to biomechanical knee laxity and prosthetic component alignment, as well as to explore the clinical utility of using contact forces and component alignments to predict knee laxity. These relationships were explored by creating a model of the lower limb in OpenSim 4.0 that incorporated contact meshes of the prosthetic components and varying properties of ligament stiffnesses to represent five different types of knees. 790 forward dynamic simulations were run at multiple flexion angles, applying increasing and decreasing torque to move the knee in the varus-valgus direction. Correlations were calculated between contact forces, knee laxity, and component alignment, and forward step-wise regressions were done to try to predict laxity using inputs of contact and alignment. Balanced contact forces did not show a consistent association with balanced knee laxity, but higher contact forces were generally associated with decreased laxity. However, contact measurements did not have a consistent significant effect in the prediction of knee laxity, which adds to the lack of support for the utilization of these measurements. Tibiofemoral contact was also quite sensitive to component alignment changes, which supports the idea that kinematically-aligned TKAs should not use a force target when balancing the knee, as patient-specific alignment entails patient-specific contact forces. Overall, the relationships between tibiofemoral contact and biomechanical knee function were inconsistent and therefore the use of these contact forces in soft-tissue balancing is not supported. More research should be done in modeling these forces during daily activities to explore a relationship between contact forces and active functionality.

Insall & Scott Surgery of the Knee E-Book

Insall & Scott Surgery of the Knee E-Book
A Book

by W. Norman Scott

  • Publisher : Elsevier Health Sciences
  • Release : 2011-09-09
  • Pages : 1504
  • ISBN : 145572789X
  • Language : En, Es, Fr & De
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Online and in print, Insall & Scott Surgery of the Knee, edited by W. Norman Scott, MD, and 11 section editors who are experts in their fields, is your complete, multimedia guide to the most effective approaches for diagnosis and management of the full range of knee disorders affecting patients of all ages. From anatomical and biomechanical foundations, to revision total knee replacement, this authoritative reference provides the most up-to-date and complete guidance on cutting-edge surgical procedures, the largest collection of knee videos in one knee textbook. Expanded coverage and rigorous updates—including 40 online-only chapters—keep you current with the latest advances in cartilage repair and regeneration, allograft and autografts, computer robotics in total knee arthroplasty, and other timely topics. This edition is the first book ever endorsed by The Knee Society. Access the full text - including a wealth of detailed intraoperative photographs, a robust video library, additional online-only chapters, a glossary of TKR designs, quarterly updates, and more - at www.expertconsult.com. Get all you need to know about the clinical and basic science aspects of the full range of knee surgeries as well as the latest relevant information, including imaging and biomechanics; soft tissue cartilage; ligament/meniscal repair and reconstructions; partial and total joint replacement; fractures; tumors; and the arthritic knee. Master the nuances of each new technique through step-by-step instructions and beautiful, detailed line drawings, intraoperative photographs, and surgical videos. See exactly how it’s done. Watch master surgeons perform Partial and Primary TKR, Revision TKR, Tumor Replacement, Fracture Treatment, and over 160 videos on the expertconsult.com. Find information quickly and easily thanks to a consistent, highly templated, and abundantly illustrated chapter format and streamlined text with many references and chapters appearing online only. Access the fully searchable contents of the book online at www.expertconsult.com, including 40 online-only chapters, a downloadable image library, expanded video collection, quarterly updates, and a glossary of TKR designs with images and text from various device manufacturers. Grasp and apply the latest knowledge with expanded coverage of cartilage repair and regeneration techniques, expanded ligament techniques in allograft and autografts, computer robotics in surgical prognostics, fitting and techniques in partial and total knee arthroplasty, and more. Consult with the best. Renowned knee surgeon and orthopaedic sports medicine authority Dr. W. Norman Scott leads an internationally diverse team of accomplished specialists—many new to this edition—who provide dependable guidance and share innovative approaches to reconstructive surgical techniques and complications management.

Personalized Hip and Knee Joint Replacement

Personalized Hip and Knee Joint Replacement
A Book

by Anonim

  • Publisher : Springer Nature
  • Release : 2020-01-01
  • Pages : 350
  • ISBN : 3030242439
  • Language : En, Es, Fr & De
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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.

Computer and Template Assisted Orthopedic Surgery

Computer and Template Assisted Orthopedic Surgery
A Book

by Rolf Haaker,Werner Konermann

  • Publisher : Springer Science & Business Media
  • Release : 2013-07-05
  • Pages : 177
  • ISBN : 3642297285
  • Language : En, Es, Fr & De
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Computer-assisted surgery is a growing sub-discipline of orthopaedic surgery. This book offers a comprehensive presentation of scientific work and clinical experience including new technologies like individual templating in unicompartmental and total knee arthoplasty based on computer-assisted design technology. Computer-assisted surgery involves not only total knee and total hip arthroplasty, but also trauma, sports and revision surgery. In this edition we have added sections on 3D fluoroscopy-based spinal surgery as well as 3D fluoroscopy-based trauma surgery. Even in total hip surgery, navigation systems offer exciting new aspects, and the clinical benefit of navigation in total knee arthroplasties has now been demonstrated. We believe that this textbook will be of interest to those new to this specific field, while also providing an update for experienced users. An added benefit is the international character of this textbook, including experiences from Switzerland, Israel, the United States and the German-speaking countries.

Improving Accuracy in Knee Arthroplasty

Improving Accuracy in Knee Arthroplasty
A Book

by Thienpont Emmanuel

  • Publisher : JAYPEE BROTHERS MEDICAL PUBLISHERS PVT. LTD.
  • Release : 2012-12-15
  • Pages : 393
  • ISBN : 9350905884
  • Language : En, Es, Fr & De
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Doody Rating : 4 stars : This book is created by a collaboration of surgeons all over the world. The primary purpose of this book is collecting the available information about alignment and to combine the different opinions about this topic in one book. Today's technology offers us a helping hand to perform better during surgery and to find the anatomical landmarks in a more consistent way. The book contains many pictures about the different surgical systems and offers many tips and tricks related to the subject. The authors discuss alignment and the anatomical landmarks used to align knee pro.

Total Knee Arthroplasty

Total Knee Arthroplasty
A Guide To Get Better Performance

by Johan Bellemans

  • Publisher : Springer Science & Business Media
  • Release : 2005
  • Pages : 409
  • ISBN : 9783540202424
  • Language : En, Es, Fr & De
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"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.

0914 - Patient Satisfaction Following Total Knee Arthroplasty with Tibial Components Placed in Constitutional Varus

0914 - Patient Satisfaction Following Total Knee Arthroplasty with Tibial Components Placed in Constitutional Varus
A Book

by Rohat Bhimani

  • Publisher : Unknown Publisher
  • Release : 2017
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Introduction: Kinematic alignment which aims to provide a well balance prosthetic knee through a full range of motion is a controversial alternative to conventional mechanical alignment following total knee arthroplasty (TKA). With advances in surgical technology and the advent of robotic assisted TKA (RA TKA), implants can now be placed with accuracy to achieve the desired limb and component alignment along with balanced gaps. The purpose of this study was to evaluate the outcome and patient satisfaction following TKA with tibial component placed in anatomic or constitutional varus alignment. Methods: 237 patients undergoing primary RA-TKA were screened to identify 124 individuals (52%) with post op constitutional varus aligned knees, defined as the desired tibial varus inclination of 1-3 degrees (mean 1.2 u00b1 0.4 degrees) measured by computer software. 40 patients (18 males, 22 females) with minimum 1 year follow up were included. Mean age was 67.0 yrs (range 49.8 u2013 83.2) and mean BMI was 31.8 kg/m2 (range 19.3 u2013 42.7 kg/m2). Patient satisfaction, Knee Society (KSS) knee and function scores, and clinical outcomes were reviewed.Results: The average overall patient satisfaction was 4.6 u00b1 0.6 on a 5-point Likert scale with 97% being very satisfied or satisfied. KSS function scores improved from an average of 44.5 u00b1 12.9 preop to 77.7 u00b1 15.0 at 1 year postop. KSS knee scores improved from an average of 37.0 u00b1 12.5 preop to 82.0 u00b1 8.4 at 1 year. Two patients underwent revision TKA, both secondary to infection. There was no incidence of implant loosening. Conclusion:Tibial components placed in anatomic or constitutional desired varus using intraoperative technologic innovation demonstrated excellent patient satisfaction and improvement in knee function following TKA. Anatomic or kinematic alignment needs to be reevaluated given the current ability to accurately balance flexion/extension gaps and obtain the desired implant and limb alignment.

Comprehensive Guide in Knee & Hip Arthroplasty

Comprehensive Guide in Knee & Hip Arthroplasty
A Book

by Parag Sancheti,Rami Sorial,Ashok Shyam,Sunny S Gugale

  • Publisher : Jaypee Brothers Medical Publishers
  • Release : 2019-03-18
  • Pages : 560
  • ISBN : 9352701364
  • Language : En, Es, Fr & De
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The Non-invasive Measurement of Knee Kinematics in Normal, Osteoarthritic and Prosthetic Knees

The Non-invasive Measurement of Knee Kinematics in Normal, Osteoarthritic and Prosthetic Knees
A Book

by Jon V. Clarke

  • Publisher : Unknown Publisher
  • Release : 2012
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Total knee arthroplasty (TKA) is the most widely performed intervention for endstage osteoarthritis (OA) but in spite of limitations in surgical techniques, alignment measurements and clinical outcomes, the expectations of an active, aging population continue to increase. The aim of this thesis was to develop and validate a noninvasive kinematic assessment tool to improve the measurement of knee alignment and ligament laxity. An intra-operative infrared tracking system was adapted for non-invasive use through the development of external mountings that enabled alignment measurements to be made supine, standing and following manual collateral stress. Coronal and sagittal plane mechanical femorotibial (MFT) angle measurement was validated to a precision of approximately ±1° by comparison to a custom made leg model, a flexible electrogoniometer and through repeatability measurements on 30 asymptomatic volunteers. Assessment of coronal laxity was quantified and standardised by controlling lever arm, applied manual load and knee flexion angle. Thirty one patients with end-stage OA were assessed before, during and six weeks following TKA and comparisons were made between invasive and non-invasive MFT angles and between supine and standing conditions. For osteoarthritic knees, varus and valgus angular displacements were greater intraoperatively in comparison to pre-operative non-invasive measurements, whereas invasive and non-invasive stress angles for prosthetic knees showed less variation. From supine to bi-pedal stance, MFT angles most frequently changed to relative varus and extension for all knee types suggesting that soft tissue restraints may be more important than rigid bony or prosthetic architecture for controlling this weightbearing alignment change. The development of a non-invasive infrared (IR) system enabled knee alignment to be quantified as a dynamic parameter in comparison to current static assessment techniques such as radiographs. The generation of subject-specific kinematic profiles could help with the surgical planning and post-operative follow-up of patients undergoing alignment dependent procedures such as TKA.

Total Knee Arthroplasty

Total Knee Arthroplasty
A Comprehensive Guide

by E. Carlos Rodríguez-Merchán,Sam Oussedik

  • Publisher : Springer
  • Release : 2015-06-15
  • Pages : 286
  • ISBN : 3319175548
  • Language : En, Es, Fr & De
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This book offers a comprehensive guide to total knee arthroplasty (TKA) that will assist in achieving excellent outcomes based on a sound understanding and technique. After an introductory section on the native knee that covers the anatomy, physiology, biomechanics, and patterns of disease, all aspects of primary knee arthroplasty are discussed in detail. Individual chapters are devoted to topics such as acute pain management, the role of technological aids, prosthetic kinematics, alignment targets, unicompartmental arthroplasty, patellar resurfacing, outcome measures, and cost-effectiveness. An extensive section explains the causes and management of potential complications, including aseptic failure, infections, and periprosthetic fracture. The surgical techniques appropriate for revision knee arthroplasty are described separately, and guidelines on how to deal with bone loss, instability, and extensor mechanism failure are provided. The authors are all respected experts from the United Kingdom, United States, Australia and Europe.

Functional Kinematic Study of Knee Replacement

Functional Kinematic Study of Knee Replacement
The Effect of Implant Design and Alignment on the Patellofemoral Joint

by Lisa Coles

  • Publisher : Unknown Publisher
  • Release : 2014
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Complex Cases in Total Knee Arthroplasty

Complex Cases in Total Knee Arthroplasty
A Compendium of Current Techniques

by Alfred J. Tria,Giles R. Scuderi,Fred D. Cushner

  • Publisher : Springer
  • Release : 2018-02-20
  • Pages : 422
  • ISBN : 3319693808
  • Language : En, Es, Fr & De
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Covering both primary and revision total knee arthroplasty (TKA), each technique-oriented chapter in this book opens with a clinical case and an overview of the challenges and multiple options for management, and each section within the chapter will describe the physical exam, surgical approach, clinical outcome and recent supporting literature. Chapters will utilize bullet points for quick reference and plentiful intra-operative photos to illustrate the various techniques described. Part one covers primary TKA, with cases demonstrating management strategies for the varus and valgus knee, flexion contracture, patellofemoral arthritis, and extra-articular deformity, among others, while part two covers revision TKA, with cases demonstrating acute infection, flexion and global instability, severe tibial and femoral bone loss, and periprosthetic fracture, among others. Written and edited by experts in the field, Complex Cases In Total Knee Arthroplasty: A Collection of Current Techniques will be a useful reference for orthopedic surgeons, residents and fellows as well as sports medicine specialists and anyone involved in surgical care of the knee.

Knee Arthroplasty Handbook

Knee Arthroplasty Handbook
Techniques in Total Knee and Revision Arthroplasty

by Giles R. Scuderi,Alfred J. Tria

  • Publisher : Springer Science & Business Media
  • Release : 2006-06-22
  • Pages : 210
  • ISBN : 9780387335315
  • Language : En, Es, Fr & De
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Designed as a concise guide to the essentials of total knee arthroplasty, as well as revision total knee arthroplasty, the text is ideal for orthopedic residents and surgeons. World-renowned experts cover basic principles and instrumentation, ligament releases, and bone defects. Fixation in total knee arthroplasty, both with cement and cementless, is considered. Complex topics regarding revision arthroplasty are detailed as well, including three-step technique, constrained total knee designs, and two-stage reimplantation for infected total knee arthroplasty. Revision of periprosthetic femur fractures and tibial periprosthetic fractures is also addressed. This practical book is an invaluable reference.

Primary Total Knee Arthroplasty

Primary Total Knee Arthroplasty
A Book

by Alessandro Rozim Zorzi,João Batista de Miranda

  • Publisher : BoD – Books on Demand
  • Release : 2018-05-23
  • Pages : 134
  • ISBN : 1789231426
  • Language : En, Es, Fr & De
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This book presents a compilation of topics related to primary total knee arthroplasty. The chapters cover, in a clear and didactic way, the current themes, written by experts from the area, from different parts of the world. Topics related to the three surgical phases (before surgery, during surgery, and after surgery) are discussed here. This is very important because the surgeon is not a "factory worker." First of all, it is a medicine doctor who has to feel and understand the particularities of each patient. Demographic studies show an aging population. Osteoarthritis and inflammatory diseases are becoming much more prevalent. In addition, a worldwide epidemic of trauma has led to the need for arthroplasties much more frequently. Therefore, total knee arthroplasty will be an increasingly important subject.