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https://www.readbyqxmd.com/read/29050180/-meta-analysis-of-three-dimensional-printing-patient-specific-instrumentation-versus-conventional-instrumentation-in-total-knee-arthroplasty
#1
J T Ren, C Xu, J S Wang, X L Liu
Objective: To evaluate the effects of three-dimensional printing patient-specific instrumentation(PSI) versus conventional instrumentation(CI) in the total knee arthroplasty. Methods: According to "patient-specific" , "patient-matched" , "custom" , "Instrumentation" , "Guide Instrumentation" , "cutting blocks" , "total knee arthroplasty" , "total knee replacement" , "TKA" and "TKR" , the literature on PubMed, EMbase, Cochrane library, CBM and WanFang were searched. According to the inclusion and exclusion criteria, the high quality randomized control trial (RCT) studies about three-dimensional (3D) printing patient-specific instrumentation versus conventional instrumentation in the total knee arthroplasty were collected...
October 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/29046778/ultrasound-guided-percutaneous-cryoneurolysis-providing-postoperative-analgesia-lasting-many-weeks-following-a-single-administration-a-replacement-for-continuous-peripheral-nerve-blocks-a-case-report
#2
Brian M Ilfeld, Rodney A Gabriel, Andrea M Trescot
Cryoneurolysis entails using low temperatures to reversibly ablate nerves, with a subsequent analgesia duration measured in weeks or months. Previously, clinical applications for acute pain were limited because treatment originally required exposing the target nerve surgically. However, three developments have now made it possible to provide prolonged postoperative analgesia by cryoneurolysis: 1) new portable, hand-held cryoneurolysis devices, 2) ultrasound machine proliferation, and, 3) anesthesiologists trained in ultrasound-guided peripheral nerve block administration...
October 2017: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/29042144/a-comparative-surface-topographical-analysis-of-explanted-total-knee-replacement-prostheses-oxidised-zirconium-vs-cobalt-chromium-femoral-components
#3
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
#4
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
#5
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/29037443/a-comprehensive-assessment-of-the-musculoskeletal-system-the-cams-knee-data-set
#6
William R Taylor, Pascal Schütz, Georg Bergmann, Renate List, Barbara Postolka, Marco Hitz, Jörn Dymke, Philipp Damm, Georg Duda, Hans Gerber, Verena Schwachmeyer, Seyyed Hamed Hosseini Nasab, Adam Trepczynski, Ines Kutzner
Combined knowledge of the functional kinematics and kinetics of the human body is critical for understanding a wide range of biomechanical processes including musculoskeletal adaptation, injury mechanics, and orthopaedic treatment outcome, but also for validation of musculoskeletal models. Until now, however, no datasets that include internal loading conditions (kinetics), synchronized with advanced kinematic analyses in multiple subjects have been available. Our goal was to provide such datasets and thereby foster a new understanding of how in vivo knee joint movement and contact forces are interlinked - and thereby impact biomechanical interpretation of any new knee replacement design...
October 6, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29037237/the-role-of-national-registries-in-improving-patient-safety-for-hip-and-knee-replacements
#7
Anne Lübbeke, Alan J Silman, Daniel Prieto-Alhambra, Amanda I Adler, Christophe Barea, Andrew J Carr
BACKGROUND: The serious adverse events associated with metal on metal hip replacements have highlighted the importance of improving methods for monitoring surgical implants. The new European Union (EU) device regulation will enforce post-marketing surveillance based on registries among other surveillance tools. Europe has a common regulatory environment, a common market for medical devices, and extensive experience with joint replacement registries. In this context, we elaborate how joint replacement registries, while building on existing structure and data, can better ensure safety and balance risks and benefits...
October 16, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29036013/patient-experience-based-value-sets-are-they-stable
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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/28992394/loss-of-muscle-strength-prior-to-knee-replacement-a-question-of-anatomical-cross-sectional-area-or-specific-strength
#15
Adam G Culvenor, Felix C Hamler, Jana Kemnitz, Wolfgang Wirth, Felix Eckstein
OBJECTIVE: To elucidate whether loss in thigh muscle strength prior to knee replacement (KR) is caused by reductions of muscle anatomical cross sectional area (ACSA) or specific-strength. METHODS: All 100 Osteoarthritis Initiative participants who received a KR (cases) and had thigh isometric muscle strength and MRI recorded (58 women, age 65±8 years, BMI 29±5 kg/m(2) ) were matched with a control (no KR) for age, sex, height, BMI, and radiographic severity. Thigh muscle ACSAs were determined from MRI at the visit before KR (T0 ), and two years before T0 (T-2 )...
October 9, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28988294/development-and-proposal-of-a-scoring-system-for-giant-cell-tumour-of-the-bone-around-the-knee
#16
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/28988204/effect-of-bisphosphonates-on-knee-replacement-surgery
#17
Tuhina Neogi, Shanshan Li, Christine Peloquin, Devyani Misra, Yuqing Zhang
PURPOSE: Bone remodelling as a therapeutic target in knee osteoarthritis (OA) has gained much interest, but the effects of antiresorptive agents on knee OA have been conflicting, with no studies to date examining the effects of bisphosphonate use on the clinically relevant endpoint of knee replacement (KR) surgery. METHODS: We used data from The Health Improvement Network (THIN), a general practitioner electronic medical records representative of the general UK population...
October 7, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28986516/mortality-readmission-and-length-of-stay-have-different-relationships-using-hospital-level-versus-patient-level-data-an-example-of-the-ecological-fallacy-affecting-hospital-performance-indicators
#18
Stefanie N Hofstede, Leti van Bodegom-Vos, Dionne S Kringos, Ewout Steyerberg, Perla J Marang-van de Mheen
BACKGROUND: Ecological fallacy refers to an erroneous inference about individuals on the basis of findings for the group to which those individuals belong. Suppose analysis of a large database shows that hospitals with a high proportion of long length of stay (LOS) patients also have higher than average in-hospital mortality. This may prompt efforts to reduce mortality among patients with long LOS. But patients with long LOS may not be the ones at higher risk of death. It may be that hospitals with higher mortality (regardless of LOS) also have more long LOS patients-either because of quality problems on both counts or because of unaccounted differences in case mix...
October 6, 2017: BMJ Quality & Safety
https://www.readbyqxmd.com/read/28983214/factors-associated-with-choice-and-success-of-one-versus-two-stage-revision-arthroplasty-for-infected-hip-and-knee-prostheses
#19
Lucas Castellani, Nick Daneman, Samira Mubareka, Richard Jenkinson
BACKGROUND: Prosthetic joint infections (PJI) of hip and knee arthroplasties are becoming increasingly common with an aging population and an increasing demand for these procedures. Despite attempts at standardization, medical and surgical approaches vary widely among practitioners. QUESTIONS/PURPOSES: We first sought to determine if there were specific factors associated with choice of one- versus two-stage revision. Then we investigated whether the type of revision approach influenced clinical treatment success...
October 2017: HSS Journal: the Musculoskeletal Journal of Hospital for Special Surgery
https://www.readbyqxmd.com/read/28975280/the-functional-roles-of-muscles-passive-prostheses-and-powered-prostheses-during-sloped-walking-in-people-with-a-transtibial-amputation
#20
Nathaniel T Pickle, Alena M Grabowski, Jana R Jeffers, Anne K Silverman
Sloped walking is challenging for individuals with transtibial amputation (TTA) due to the functional loss of the ankle plantarflexors. Prostheses that actively generate ankle power may help to restore this lost function. The purpose of this study was to use musculoskeletal modeling and simulation to quantify the mechanical power delivered to body segments by passive and powered prostheses and the remaining muscles in the amputated and intact legs during sloped walking. We generated walking simulations from experimental kinematic and kinetic data on slopes of 0, ±3 deg and ±6 deg in eight people with a TTA using powered and passive prostheses and eight nonamputees...
November 1, 2017: Journal of Biomechanical Engineering
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