Download or read book Proth se du genou unicompartimentaire interne de type Oxford written by Numa Mercier and published by . This book was released on 2008 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: La prothèse unicompartimentaire Oxford (Biomet Ltd, Bridgend, UK) a pour caractéristique principale de présenter un ménisque mobile. Cette pièce intermédiaire en polyéthylène possède des surfaces congruentes avec le composant tibial et fémoral et ceci, quelle que soit la position du genou. Le but de ce travail était d'analyser les résultats à long terme, avec un recul de plus de 10 ans, d'une série de 43 prothèses unicompartimentaires internes de type Oxford, implantées entre 1988 et 1994. Initialement, l'étude portait sur 54 patients, mais cinq (9%) ont été perdus de vue et neuf dossiers de patients décédés n'ont pas pu être utilisés car incomplets. Au final, 40 patients ont été inclus dans l'analyse : 16 en vie (30%), 14 décédés (43%) et 10 patients porteurs d'une prothèse totale du genou en raison de l'échec de l'arthroplastie unicompartimentaire (18%). L'âge moyen des patients était de 69 ans (47 à 86 ans) au moment de l'intervention. La population était composée de 60% d'hommes et l'index moyen de masse corporelle était de 28. L'arthrose représentait 91% des indications, l'ostéonécrose 7% et les autres étiologies 3%. Les reprises chirurgicales sont au nombre de treize : quatre descellements, trois arthroses fémoro-tibiales externes, une luxation du ménisque mobile itérative, deux ruptures de matériel (implant fémoral), une reprise itérative pour conflit intra-prothétique. La reprise consistait soit en un changement au profit d'une prothèse totale du genou (10 cas), soit en un changement de la pièce méniscale (3 cas). Un an après l'intervention, le score IKS était de 189,67 points +- 14,43 (115-200), soit 93% d'excellents et de bons résultats. Lors de la révision, l'âge moyen était de 82 ans. L'évaluation subjective retrouvait 69% de patients très satisfaits ou satisfaits. Le score global IKS était de 145,52 points +- 39,90 avec un score "fonction" de 61,17 points +- 34,43 et score "genou" de 89,05 points +- 15,85. Les résultats selon le score IKS étaient classés comme excellents dans 4 cas (> 170 pts), bons dans 4 cas (140-170 pts), moyen dans 2 cas (120-140 pts) et mauvais dans 5 cas ( 120 pts). Sur le plan radiographique, le varus global du membre est passé de 171,31° +- 0,46 (161°-180°) en préopératoire à 178° +- 3,21 (170°-186°) en postopératoire. 63% des patients étaient hypo- ou une normocorrigés (entre 0° et 4°), 19% avaient une hypocorrection moyenne (entre 5° à 9°), 2% une hypocorrection excessive (10°) et 16% une hypocorrection (180 °). Dans le plan frontal, on a pu objectiver 16 erreurs de positionnement, représentées par une obliquité tibiale excessive dans sept cas et fémorale dans neuf cas (carrossage). Les liserés étaient présents sur 28% des prothèses. Au niveau de l'implant tibial : quatre liserés de grade 1, un liseré de grade 2 et enfin cinq descellements. Au niveau du fémur, un liseré de grade 1 et un descellement. Une usure du plolyéthilène a été retrouvée dans 18% des cas, avec une perte de hauteur moyenne de 3,25 mm (1-7). Le taux de survie était de 93% à 1 an, 90,5% à 5 ans, 74,7% à 10 ans et 70,1% à 15 ans. La prothèse Oxford offre des résultats satisfaisants à long terme, comme en témoigne le taux de contentement des patients porteurs de la prothèse, avec un recul de plus de 14 ans. Ce mode prothétique est en accord avec la volonté des patients visant à retrouver rapidement leurs capacités fonctionnelles. Hélas, les échecs que nous avons répertoriés, même si certains auraient pu être évités, témoignent de la difficulté de pose de cette prothèse. Le genu valgum postopératoire en est la description parfaite, car il est difficile de contrôler à la fois la bonne tension des ligaments, la stabilité du ménisque prothétique et l'axe global du membre inférieur qui doit être hypo-corrigé. Heureusement, le faible sacrifice osseux lors de l'implantation autorise, dans les meilleures conditions, une reprise par une prothèse totale.

Download or read book Proth se unicompartimentale de genou written by Guy Deschamps and published by Elsevier Masson. This book was released on 1998 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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

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.

Download or read book Unicompartmental Knee Arthroplasty written by P. Cartier and published by Elsevier Science Limited. This book was released on 1997-05-01 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Joint Arthroplasty written by Shinichi Imura and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: The introduction of total joint arthroplasty throughout the world has contributed manifold benefits to patients who suffer from joint diseases. Concurrently, however, there has been an increase in revision surgery. Many orthopedic surgeons agree that durability of prostheses is an eternal problem. In particular, periprosthetic osteolysis recently has been identified as one of the serious problems affecting prosthetic dura bility. To improve durability, osteolysis and many other problems must be investi gated and solved both experimentally and clinically with respect to such aspects as prosthetic material, design, and biological and biomechanical behavior. This book comprises 37 papers that were presented by orthopedic surgeons and biomedical engineers at the 28th Annual Meeting of the Japanese Society for Replace ment Arthroplasty, held in March 1998 in Kanazawa, Japan. The volume is thus a compilation of the latest knowledge about the pathogenesis and reduction of osteolysis and wear, newly developed total hip prostheses, and other current topics of total knee arthroplasty. We earnestly hope that this book will be of benefit to clinicians and researchers, and that it will contribute to the creation of more durable total joint prostheses in the future. SHINICHI IMURA v Contents Preface .................... '" .. .. .. ... . .. .. .. . ... .. . . .. . ... . . .. . V List of Contributors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . XI . . . . . . . . . . . . Part 1 Wear and Pathogenesis of Osteolysis Friction and Wear of Artificial Joints: A Historical Review N. AKAMATSU ................................................ , 3 Matrix Degradation in Osteoclastic Bone Resorption Under Pathological Conditions .

Download or read book The Patellofemoral Joint written by James M. Fox and published by McGraw-Hill Professional Publishing. This book was released on 1993 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hip Biomechanics written by Shinichi Imura and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is the arranged monograph based on the Hip Biomechanics Symposium held on November 1992 in Fukui, Japan. It consists of six major sections: loading, gait analysis, total hip arthroplasty, osteotomies, motion analysis, and stem designs for stability. The most important aim of the volume is to overview the current research outcomes in the biomechanical approaches to adult hip diseases. Each of these sections brings together many of the leading researchers in this field. The information found here will be of benefit to orthopedic surgeons and researchers in the related areas.

Download or read book Total Knee Arthroplasty written by E. Carlos Rodríguez-Merchán and published by Springer. This book was released on 2015-06-15 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.