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https://www.readbyqxmd.com/read/29042144/a-comparative-surface-topographical-analysis-of-explanted-total-knee-replacement-prostheses-oxidised-zirconium-vs-cobalt-chromium-femoral-components
#1
Emma Kennard, Susan C Scholes, Raghavendra Sidaginamale, Rajkumar Gangadharan, David J Weir, James Holland, David Deehan, Thomas J Joyce
It has been proposed that an increased surface roughness of the femoral components of Total Knee Replacements (TKRs) may be a contributing factor to the accelerated wear of the polyethylene (PE) bearing and ultimately prosthesis failure. Oxidised Zirconium was introduced to the orthopaedic market in an attempt to reduce PE wear associated failures and increase the longevity of the prosthesis. In this study, non-contacting profilometry was used to measure the surface roughness of the femoral components of 6 retrieved TKRs (3 Oxidised Zirconium (OxZr) and 3 Cobalt Chromium alloy (CoCr) femoral components) and 2 as-manufactured femoral components (1 OxZr and 1 CoCr)...
October 14, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/29040128/single-dose-preoperative-vitamin-d-supplementation-decreases-infection-in-a-mouse-model-of-periprosthetic-joint-infection
#2
Vishal Hegde, Erik M Dworsky, Alexandra I Stavrakis, Amanda H Loftin, Stephen D Zoller, Howard Y Park, Sherif Richman, Daniel Johansen, Yan Hu, Julie A Taylor, Christopher D Hamad, Rene F Chun, Weixian Xi, John S Adams, Nicholas M Bernthal
BACKGROUND: Despite recent advances, infection remains the most common etiology of arthroplasty failure. Recent work suggests that 25-hydroxyvitamin D (25D) deficiency correlates with the frequency of periprosthetic joint infection (PJI). We endeavored to examine whether 25D3 deficiency leads to increased bacterial burden in vivo in an established mouse model of PJI and, if so, whether this effect can be reversed by preoperative 25D3 supplementation. METHODS: Mice (lys-EGFP) possessing fluorescent neutrophils were fed a vitamin D3-sufficient (n = 20) or deficient (n = 40) diet for 6 weeks...
October 18, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29037634/pilot-study-post-operative-rehabilitation-pathway-changes-and-implementation-of-functional-closed-kinetic-chain-exercise-in-total-hip-and-total-knee-replacement-patient
#3
C Abbas, J Daher
OBJECTIVE: The aim of this study was to assess the feasibility of introducing a functional closed kinetic chain exercise program to an acute care setting to reduce length of hospital stay and assess tolerance to exercise immediately following total hip or total knee arthroplasty. METHODS: A protocol change implementing a functional closed kinetic chain based exercise program, post total hip (n = 535) and total knee (n = 695) arthroplasty, was performed at Windsor Regional Hospital Ouellette Campus in Windsor, Ontario Canada...
October 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29036013/patient-experience-based-value-sets-are-they-stable
#4
A Simon Pickard, Yu-Ting Hung, Fang-Ju Lin, Todd A Lee
BACKGROUND: Although societal preference weights are desirable to inform resource-allocation decision-making, patient experienced health state-based value sets can be useful for clinical decision-making, but context may matter. OBJECTIVE: To estimate EQ-5D value sets using visual analog scale (VAS) ratings for patients undergoing knee replacement surgery and compare the estimates before and after surgery. METHODS: We used the Patient Reported Outcome Measures data collected by the UK National Health Service on patients undergoing knee replacement from 2009 to 2012...
October 13, 2017: Medical Care
https://www.readbyqxmd.com/read/29032861/patellar-resurfacing-in-total-knee-arthroplasty-systematic-review-and-meta-analysis
#5
REVIEW
Umile G Longo, Mauro Ciuffreda, Nicholas Mannering, Valerio D'Andrea, Matteo Cimmino, Vincenzo Denaro
BACKGROUND: Patellar resurfacing in total knee arthroplasty remains controversial. The aim of this study is to evaluate this technique through an analysis of comparative studies in the current literature. METHODS: We performed a comprehensive search of PubMed, MEDLINE, Cochrane, CINAHL, and EMBASE databases using various combinations of the keywords "Knee," "Replacement," "Prosthesis," "Patella," "Resurfacing," and "Arthroplasty." All articles relevant to the subject were retrieved, and their bibliographies were hand searched for further references relevant to primary patellar resurfacing in total knee arthroplasty...
September 6, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29030653/lateral-unicompartmental-knee-replacement-a-systematic-review-of-reasons-for-failure
#6
REVIEW
Lukas Ernstbrunner, Mohamed A Imam, Octavian Andronic, Tabea Perz, Karl Wieser, Sandro F Fucentese
PURPOSE: Currently, individual studies lack the power to successively illustrate different failure modes; therefore, we undertook a systematic review to examine lateral unicompartmental knee replacement (lat UKR) failure modes. Furthermore, we compared early with midterm and late failures and fixed-bearing with mobile-bearing implants. METHODS: A search using the databases of PubMed, EMBASE, Cochrane, and annual registries was performed to search for failed lat UKRs...
October 13, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/29028757/patient-experience-based-value-sets-are-they-stable
#7
A Simon Pickard, Yu-Ting Hung, Fang-Ju Lin, Todd A Lee
BACKGROUND: Although societal preference weights are desirable to inform resource-allocation decision-making, patient experienced health state-based value sets can be useful for clinical decision-making, but context may matter. OBJECTIVE: To estimate EQ-5D value sets using visual analog scale (VAS) ratings for patients undergoing knee replacement surgery and compare the estimates before and after surgery. METHODS: We used the Patient Reported Outcome Measures data collected by the UK National Health Service on patients undergoing knee replacement from 2009 to 2012...
November 2017: Medical Care
https://www.readbyqxmd.com/read/29027759/greek-physiotherapists-perspectives-on-rehabilitation-following-total-knee-replacement-a-descriptive-survey
#8
Maria Moutzouri, Nigel Gleeson, Evdokia Billis, Elias Tsepis, John Gliatis
BACKGROUND AND PURPOSE: In Greece, as in many countries, there is a scarcity of evidence in the type of physiotherapy services offered for the rehabilitation of total knee replacement (TKR). Despite the number of TKRs annually performed in Greece (over 10,000), there are no available clinical guidelines as to the content of best physiotherapy practice. The aim of this nationwide survey undertaken by physiotherapists treating TKR patients post-operatively was to record standard practice and services available in Greece...
October 2017: Physiotherapy Research International: the Journal for Researchers and Clinicians in Physical Therapy
https://www.readbyqxmd.com/read/29025397/a-qualitative-study-of-patient-education-needs-for-hip-and-knee-replacement
#9
Deborah Kennedy, Amy Wainwright, Lucy Pereira, Susan Robarts, Patricia Dickson, Jennifer Christian, Fiona Webster
BACKGROUND: Quality health information is key to patient engagement, self-management and an enhanced healthcare experience. There is strong evidence to support involving patients and their families in the development and evaluation of health-related educational material. These factors were the impetus for our high volume joint replacement centre to undertake a qualitative study to elicit patient experiences to inform the development of effective strategies and education along the care continuum for hip and knee replacement...
October 12, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29022797/surgery-performed-by-supervised-registrars-does-not-adversely-affect-medium-term-functional-outcomes-after-total-knee-replacement
#10
N Beattie, J F Maempel, S Roberts, H B Waterson, G Brown, I J Brenkel, P J Walmsley
Introduction Although total knee arthroplasty (TKA) is an index procedure for orthopaedic registrars, there is a lack of published research as to the effects of surgery when performed by supervised trainees. The aim of this study was to compare functional outcomes up to five years after primary TKA performed by consultants and trainee surgeons. Methods A retrospective analysis was conducted of prospectively collected data for 609 consecutive patients (339 female, 270 male) undergoing TKA. Patients were assessed preoperatively as well as at 18 months, three years and five years postoperatively, and American Knee Society objective knee and functional scores (AKSK and AKSF) were recorded...
September 15, 2017: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/28988294/development-and-proposal-of-a-scoring-system-for-giant-cell-tumour-of-the-bone-around-the-knee
#11
Deng-Xing Lun, Yong-Cheng Hu, Xiong-Gang Yang, Zhen Wang, Xiu-Chun Yu, Su-Jia Wu, Zhao-Ming Ye, Han Wang
PURPOSE: The purpose of this study was to provide the surgeons with effective and reliable guidelines for surgical decision-making by establishing a scoring system for giant cell tumour (GCTSS) based on evidence and expert opinion. METHODS: The modified Delphi technique and analytic hierarchy process were used to establish the GCTSS. The GCTSS was defined and classified based on different surgical methods using data from 207 patients collected retrospectively between October 2003 and December 2014...
October 7, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28974377/persistent-opioid-use-following-total-knee-arthroplasty-a-signal-for-close-surveillance
#12
Robert S Namba, Maria C S Inacio, Nicole L Pratt, Stephen E Graves, Elizabeth E Roughead, Elizabeth W Paxton
BACKGROUND: Prolonged opioid use following total knee arthroplasty (TKA) has not been extensively studied. METHODS: A cohort study of primary TKA for osteoarthritis using an integrated healthcare system and Total Joint Replacement Registry (January 2008-December 2011) was conducted. Opioid use during the first year after TKA was the exposure of interest and cumulative daily oral morphine equivalent (OME) amounts were calculated. Total postsurgical OME per 90-day exposure periods were categorized into quartiles...
September 13, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28973836/general-and-abdominal-obesity-as-risk-factors-for-late-life-mobility-limitation-after-total-knee-or-hip-replacement-for-osteoarthritis-among-women
#13
Aladdin H Shadyab, Wenjun Li, Charles B Eaton, Andrea Z LaCroix
OBJECTIVE: To investigate associations of body mass index (BMI), waist circumference (WC), and waist-hip ratio (WHR) with survival to age 85 with mobility limitation or death before age 85 among older women with total knee (TKR) or total hip (THR) replacement for osteoarthritis. METHODS: This was a prospective study of women (aged 65-79 years at baseline) from the Women's Health Initiative recruited during 1993-1998 and followed through 2012. Women's Health Initiative data were linked to Medicare claims data to determine TKR (n=1,867) and THR (n=944) for osteoarthritis...
October 3, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/28971359/baropodometry-on-patients-after-total-knee-arthroplasty
#14
A Notarnicola, G Maccagnano, A Fiore, A Spinarelli, L Montenegro, M Paoloni, F Pastore, S Tafuri, B Moretti
PURPOSE: It is well known that total knee replacement surgery decreases pain and improves function, but the effect on postural assessment needs to be studied better with the use of new technological devices. Total knee arthroplasty (TKA) improves motor coordination and stability of the knee. On the other hand, changing joint functionality can modify the balance. The aim of this trial is to record and analyze the static and dynamic baropodometric data of patients in the first few months following joint replacement...
October 3, 2017: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/28971236/gender-specific-association-between-dietary-acid-load-and-total-lean-body-mass-and-its-dependency-on-protein-intake-in-seniors
#15
A M Faure, K Fischer, B Dawson-Hughes, A Egli, H A Bischoff-Ferrari
Diet-related mild metabolic acidosis may play a role in the development of sarcopenia. We investigated the relationship between dietary acid load and total lean body mass in male and female seniors age ≥ 60 years. We found that a more alkaline diet was associated with a higher %TLM only among senior women. INTRODUCTION: The aim of this study was to determine if dietary acid load is associated with total lean body mass in male and female seniors age ≥ 60 years. METHODS: We investigated 243 seniors (mean age 70...
October 2, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28965944/predictors-of-outcome-after-primary-total-joint-replacement
#16
Markus Weber, Benjamin Craiovan, Michael L Woerner, Timo Schwarz, Joachim Grifka, Tobias F Renkawitz
BACKGROUND: Total hip and knee replacements are frequently performed curative treatment options in end-stage arthritis. In this study, we analyzed clinical outcome, complications, and predictors of outcome in modern joint replacement. METHODS: In a retrospective analysis of over 2000 primary total hip and knee replacements from our institutional joint registry, responder rates for positive outcome as defined by the OMERACT-OARSI criteria, postoperative complication rates, and patient-reported outcome measures (EQ-5D, WOMAC) within the first year were compared between hip and knee replacements...
September 7, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28965577/effects-of-biological-factors-and-health-condition-on-mercury-and-selenium-concentrations-in-the-cartilage-meniscus-and-anterior-cruciate-ligament
#17
Danuta I Kosik-Bogacka, Natalia Lanocha-Arendarczyk, Karolina Kot, Zaneta Ciosek, Pawel Zietek, Maciej Karaczun, Bogumila Pilarczyk, Agnieszka Tomza-Marciniak, Joanna Podlasinska, Elzbieta Kalisinska, Joanna Pyzia
Due the long-term nature of joint tissue remodeling processes, knee structures including meniscus and anterior cruciate ligament (ACL) can be a model for studying the bioaccumulation of mercury (Hg) and selenium (Se). The accumulation and retention of Hg in human tissues can have a negative effect on the proper functioning of homeostasis-affecting organisms. A factor of chronic poisoning with Hg forms is probably the Se:Hg ratio in tissues. Se:Hg molar ratios below one may increase Hg toxicity potentials, while molar ratios that approach or exceed one effectively may protect against Hg toxicity...
December 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/28965133/influence-of-anxiety-and-pain-catastrophizing-on-the-course-of-pain-within-the-first-year-after-uncomplicated-total-knee-replacement-a-prospective-study
#18
Sebastian Bierke, Wolf Petersen
PURPOSE: Prolonged postoperative pain is a frequent problem after uncomplicated total knee replacement (TKR). The purpose of this study was to evaluate the effect of anxiety and pain catastrophizing on postoperative pain after TKR. METHODS: A total of 150 patients were enrolled in this prospective study. Preoperatively, anxiety was assessed using the State-Trait Anxiety Inventory (STAI) and pain catastrophizing was assessed using the Pain Catastrophizing Scale (PCS)...
September 30, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28957567/infrapatellar-fat-pad-features-in-osteoarthritis-a-histopathological-and-molecular-study
#19
Marta Favero, Hamza El-Hadi, Elisa Belluzzi, Marnie Granzotto, Andrea Porzionato, Gloria Sarasin, Anna Rambaldo, Claudio Iacobellis, Augusto Cigolotti, Chiara Giulia Fontanella, Arturo Natali, Roberta Ramonda, Pietro Ruggieri, Raffaele De Caro, Roberto Vettor, Marco Rossato, Veronica Macchi
Objective: The infrapatellar fat pad (IFP) is considered a local producer of adipocytokines, suggesting a potential role in OA. The objective of this study was to evaluate the histopathological and molecular characteristics of OA IFPs compared with controls. Methods: The histopathological characteristics of IFPs were evaluated in patients undergoing total knee replacements and in control patients (without OA), considering the following parameters: presence of inflammatory cells, vascularization, adipose lobules dimension and thickness of the interlobular septa...
October 1, 2017: Rheumatology
https://www.readbyqxmd.com/read/28951054/recent-trends-in-blood-utilization-after-revision-hip-and-knee-arthroplasty
#20
Robert A Burnett, Nicholas A Bedard, David E DeMik, Yubo Gao, Steve S Liu, John J Callaghan
BACKGROUND: Blood transfusion guidelines in elective surgery have been implemented over the last decade to minimize risk and cost related to transfusion without sacrificing patient outcomes. Blood utilization in primary total hip (THA) and total knee arthroplasty (TKA) has been extensively studied but there is a paucity of studies evaluating utilization in revision THA and TKA. The purpose of this study is to evaluate current trends in transfusion following revision THA and TKA. METHODS: The Humana dataset was reviewed for transfusion trends from 2007 to 2015 for patients undergoing revision THA and TKA...
September 5, 2017: Journal of Arthroplasty
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