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Orthopaedics, Arthoplasty

T W Nystad, A M Fenstad, O Furnes, B T Fevang
OBJECTIVES: To investigate how patient characteristics, time of diagnosis, and treatment affect the need for orthopaedic surgery in patients with rheumatoid arthritis (RA). METHOD: We reviewed the medical history of 1544 patients diagnosed with RA at Haukeland University Hospital in Bergen, Norway, from 1972 to 2009, of whom 1010 (mean age 57 years, 69% women) were included in the present study. Relevant orthopaedic procedures were obtained from the Norwegian Arthoplasty Register and the hospital's administrative patient records...
February 15, 2018: Scandinavian Journal of Rheumatology
Jan Nadorf, Stefan Kinkel, Simone Gantz, Eike Jakubowitz, J Philippe Kretzer
INTRODUCTION: Revision total knee arthoplasty often requires modular implants to treat bone defects of varying severity. In some cases, it may not be clear which module size and implant combination (e.g. sleeve and stem) should be chosen for a specific defect. When balancing implant stability and osseointegration against stress-shielding, it is important to choose an appropriate implant combination in order to match the given level of bone loss. Therefore, the necessity of stems in less extensive tibial defects and the advantage of different stems (lengths and stiffnesses) in combination with large metaphyseal sleeves on implant fixation and bone flexibility using a modular tibial revision knee system, were analyzed...
2017: PloS One
Gerrit Steffen Maier, Uwe Maus, Djordje Lazovic, Konstantin Horas, Klaus Edgar Roth, Andreas Alois Kurth
BACKGROUND: The purpose of this observational study was to evaluate serum levels of 25-OH-D in patients scheduled to undergo elective hip or knee arthroplasty. We hypothesised that 25-OH-D level is an independent risk factor for length of stay in orthopaedic patients after elective hip or knee arthoplasty. MATERIALS AND METHODS: 25-OH-D levels were measured in 1083 patients admitted to an orthopaedic surgery department to undergo elective hip or knee arthroplasty...
December 2016: Journal of Orthopaedics and Traumatology: Official Journal of the Italian Society of Orthopaedics and Traumatology
L Nečas, S Katina, S Křivánek, J Uhlárová
This annual report of Slovakian Arthroplasty Register (SAR) is an official document dealing with all arthroplasty procedures performed in Slovakia from January 1st until December 30th, 2010. During that period the population of Slovakia reached 5,435,273. During the observed period 4,970 primary arthroplasties and 457 revision arthroplasties were performed. In general, the number of arthroplasty procedures depends on the demographic growth of the population. This annual report is divided into two main parts - arthroplasty of the hip joint and the arthroplasty of the knee joint: it contains summary statistics from all surgical departments performing arthroplasty procedures...
2011: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
Ljiljana Markovic-Denic, Kristina Zivkovic, Aleksandar Lesic, Vesna Bumbasirevic, Emilija Dubljanin-Raspopovic, Marko Bumbasirevic
PURPOSE: Venous thromboembolism (VTE) is a common complication of orthopaedic surgery in the industrialised world; though there may be variability between population groups. This study aims to define the incidence and risk factors for symptomatic VTE following primary elective total hip and knee arthoplasty surgery in a single centre in Eastern Europe. METHODS: This prospective study included 499 adult patients undergoing total hip and knee arthroplasty for symptomatic osteoarthritis over a two-year period at the Clinic of Orthopaedic Surgery and Traumatology, Belgrade...
June 2012: International Orthopaedics
A Schuh, C Lill, W Hönle, H Effenberger
INTRODUCTION: Several case reports have been published on allergic reactions like eczema, urticaria, persistent swelling, sterile osteomyelitis or aseptic implant loosening in the context of orthopaedic implants. There is, however, a lack of data concerning incidence or prevalence of allergies in this special group of patients. The aim of this study was to analyse a consecutive series of patients with a total hip or knee arthroplasty to gain information about prevalence of allergic reactions to constituents of the alloys or bone cement...
June 2008: Zentralblatt Für Chirurgie
D Iwata, H C Broun, A P Black, C A Preston, G I Anderson
A retrospective multi-centre study was carried out in order to compare outcomes between cemented and uncemented total hip arthoplasties (THA). A quantitative orthopaedic outcome assessment scoring system was devised in order to relate functional outcome to a numerical score, to allow comparison between treatments and amongst centres. The system combined a radiographic score and a clinical score. Lower scores reflect better outcomes than higher scores. Consecutive cases of THA were included from two specialist practices between July 2002 and December 2005...
2008: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
Domenico Tigani, Carola Zolezzi, Federico Trentani, Alessandro Ragaini, Michele Iafisco, Silvia Manara, Barbara Palazzo, Norberto Roveri
This paper explores the possibility of using biodegradable cross-linked gelatines as antibiotic devices for a long-term elution (80 days). Capillary electrophoresis (CE) has been utilized to evaluate the mass percentage of vancomycin and gelatine contemporary released from differently cross-linked vancomycin loaded gelatine samples in an elution time ranging from 24 to 1920 h. While the solubilization kinetic of gelatine samples differently cross-linked can be very close described by the simplified Higuchi model, the vancomycin release kinetic is contemporary governed by both the Fickian diffusion process trough the gelatine matrix network and the dissolution process of the matrix due to its degradation...
March 2008: Journal of Materials Science. Materials in Medicine
S Sankaramanivel, R Jeyapriya, D Hemalatha, S Djody, J Arunakaran, N Srinivasan
Alloys of chromium have a long history of success in the surgical treatment of many orthopaedic defects. Nonetheless, prostheses loosening are commonly found around arthoplasties due to corrosion of metals. On this basis, it is hypothesized that chromium accumulation interferes with remodeling of bone. The present study aims to analyse the toxic effects of chromium on bone phosphatases in various regions of the bone in rats. Rats were treated with chromium intraperitoneally (0.5 mg/kg) in the form of potassium dichromate for 5 days...
June 2006: Human & Experimental Toxicology
Scott M Sporer, Wayne G Paprosky
The vast majority of femoral revisions that an orthopaedic surgeon encounters can be treated successfully with an extensively porous coated stem. Long-term results have demonstrated that this type of implant can provide reliable initial fixation with a high propensity for long-term fixation. Depending on the degree of femoral bone loss (Paprosky Type IIIA or Type IIIB bone), a longer cementless stem may be required to obtain initial axial and rotational stability. If severe bone loss is present (Paprosky Type IV bone), large canal diameters are encountered (>19 mm), or if torsion remodeling of the proximal femur has occurred, alternative methods of fixation may be required...
2005: Surgical Technology International
Pablo F Gomez, Jose A Morcuende
In the 1960s, Sir John Charnley pioneered modern total hip arthroplasty (THA) and spent the next two decades refining all aspects of the procedure, working with the commercial firm of Chas F. Thackray Limited, now a subsidiary of DePuy Orthopaedics, a Johnson and Johnson Company. We review here that relationship, in light of the complex relationships today that exist among industry, researchers, surgeons, and the public.
2005: Iowa Orthopaedic Journal
J S Bergström, C M Rimnac, S M Kurtz
The development of accurate theoretical failure, fatigue, and wear models for ultra-high molecular weight polyethylene (UHMWPE) is an important step towards better understanding the micromechanisms of the surface damage that occur in load bearing orthopaedic components and improving the lifetime of joint arthoplasties. Previous attempts to analytically predict the clinically observed damage, wear, and fatigue failure modes have met with limited success due to the complicated interaction between microstructural deformations and continuum level stresses...
March 2005: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
D Bädorf, G Willmann
Faced with a growing number of younger patients in need of total joint arthroplasty, orthopaedic surgeons are demanding long-term implants for total joint replacement. An assessment of the long-term mechanical behaviour is vivo of all biomaterials in common use in prostheses is in progress. In the present paper, we discuss the long-term reliability of polyethylene (UHMWPE) in joint replacement in terms of tribology and the different biomechanical situation in various human joints. Long-term failure mechanisms for polyethylene in total hip arthoplasty (THA) differ from those seen in total knee arthroplasty (TKA) although the same materials are used...
May 1998: Biomedizinische Technik. Biomedical Engineering
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