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'Total knee replacement'

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https://www.readbyqxmd.com/read/29166684/-implantation-of-a-modular-distal-femoral-replacement-with-compressive-osseointegration-as-a-salvage-procedure-in-a-complex-femoral-posttraumatic-setting
#1
Anna Janine Schreiner, Peter Marten de Zwart, Christian Arnscheidt, Ulrich Stöckle, Björn Gunnar Ochs
Background Large bone defects and losses play a crucial role in both tumour surgery and in complex primary and revision total knee replacement. The established options of cemented or uncemented long intramedullary stems are limited by large bone defects and are at risk from relatively high exposure to aseptic loosening. There is no general valid agreement on implant fixation of the distal femur. A further option is the cementless fixation method with compressive osseointegration, based on the so-called Wolff law of bone remodelling...
November 22, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/29165342/knee-and-ankle-arthroplasty-in-hemophilia
#2
REVIEW
Luigi Piero Solimeno, Gianluigi Pasta
Today, major surgical procedures can be safely performed in hemophilic patients with chronic arthropathy, using available factor concentrates. In this setting, total knee replacement is considered the "gold standard", while the use of total ankle replacement is still debated. Indeed, the unsatisfactory results obtained with the previous available design of implants did not raise enthusiasm as knee or hip replacement. Recently, the introduction of new implant designs and better reported outcomes have renewed the interest in total ankle replacement in people with hemophilia...
November 22, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/29164228/emg-driven-forward-dynamics-simulation-to-estimate-in-vivo-joint-contact-forces-during-normal-smooth-and-bouncy-gait
#3
Swithin Razu, Trent M Guess
This study leveraged data from the "Sixth Grand Challenge Competition to Predict in Vivo Knee Loads" to create a full-body musculoskeletal model that incorporates subject specific geometries of the right leg in order to concurrently predict knee contact forces, ligament forces, muscle forces, and ground contact forces. The objectives of this paper are twofold: First, to describe an electromyography (EMG)-driven modeling methodology to predict knee contact forces, and second to validate model predictions by evaluating the model predictions against known values for a patient with an instrumented total knee replacement (TKR) for three distinctly different gait styles (normal, smooth, and bouncy gait)...
November 21, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/29161930/no-radiological-and-clinical-advantages-with-patient-specific-positioning-guides-in-total-knee-replacement
#4
Justin A M J Van Leeuwen, Finnur Snorrason, Stephan M Röhrl
Background and purpose - Although the use of patient-specific positioning guides (PSPGs) in total knee replacement (TKR) in theory is promising, the technique has not yet proven its superior- ity compared with the conventional method. We compared radio- logical alignment and clinical outcome between TKR performed with the use of PSPGs and the conventional operation method. Patients and methods - 3 hospitals participated in a prospec- tive trial. 109 patients were randomized to either the conventional method or to the use of PSPGs...
November 22, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/29160123/fast-tracking-for-total-knee-replacement-reduces-use-of-institutional-care-without-compromising-quality
#5
Konsta J Pamilo, Paulus Torkki, Mikko Peltola, Maija Pesola, Ville Remes, Juha Paloneva
Background and purpose - Fast-tracking shortens the length of the primary treatment period (length of stay, LOS) after total knee replacement (TKR). We evaluated the influence of the fast-track concept on the length of uninterrupted institutional care (LUIC) and other outcomes after TKR. Patients and methods - 4,256 TKRs performed in 4 hospitals between 2009-2010 and 2012-2013 were identified from the Finnish Hospital Discharge Register and the Finnish Arthroplasty Register. Hospitals were classified as fast track (Hospital A) and non-fast track (Hospitals B, C and D)...
November 21, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/29159505/biochemical-stress-evaluation-after-medial-parapatellar-and-subvastus-approach-in-total-knee-replacement
#6
L Sabatini, G Nicolaci, F Atzori, A Oliva, A Aprato, M Terzolo, A Masse'
INTRODUCTION: Even if different surgical approaches for total knee arthroplasty are well known since decades, the standard medial parapatellar incision remains the most common one; general agreement about significant advantages with minimally invasive techniques is lacking. Furthermore, the surgical stress effect on the organism has always been analyzed through blood inflammatory parameters. This study aim was to compare the standard and subvastus approaches, using the salivary cortisol in particular as measure for systemic surgery-related stress...
November 20, 2017: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/29155833/do-intra-articular-hyaluronic-acid-injections-delay-total-knee-replacement-in-patients-with-osteoarthritis-a-cox-model-analysis
#7
Angélique Delbarre, Bernard Amor, Isabelle Bardoulat, Aymeric Tetafort, Nathalie Pelletier-Fleury
OBJECTIVES: This study aimed to describe patients treated for knee osteoarthritis between 2006 and 2013 in France and to compare the delay from diagnosis to total knee replacement between patients who received intra-articular hyaluronic acid injections and those who did not receive the injections. A second objective was to compare direct medical costs for ambulatory care between treatment groups. MATERIALS AND METHODS: Patients were selected from a representative sample of the real world administrative claims database using an algorithm developed by experts from the scientific committee of the study...
2017: PloS One
https://www.readbyqxmd.com/read/29154233/objective-assessment-of-knee-proprioception-and-sensorimotor-function-in-patients-with-primary-gonarthrosis-before-and-after-knee-replacement
#8
Anna Hadamus, Dariusz Białoszewski
The sensorimotor system is a complicated tool allowing for maintaining body balance and responding to changing environmental conditions to prevent injury. It is difficult to objectively assess the function of balance control mechanisms due to the multidimensional nature of the sensorimotor system and multitude of variables that may interfere with the measurement. The function of the sensorimotor system is considerably compromised in osteoarthritis, including gona-rthro-sis. The knee is the second most common location of osteoarthritis, after the hip, and total or partial replacement surgery of the knee joint represents the therapy of choice in advanced stages of the condition...
October 31, 2017: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/29152001/total-knee-arthroplasty-in-patients-with-parkinson-s-disease-a-critical-analysis-of-available-evidence
#9
REVIEW
Munis Ashraf, Sruthi Priyavadhana, Senthil Nathan Sambandam, Varatharaj Mounasamy, Om Prakash Sharma
Background: In this era of modern medicine, there is an increase in life expectancy and thereby an ageing population. Among this group one of the most common neurological disorder is Parkinson disease and one of the most common operation done in elderly population is a total joint arthroplasty. But total joint arthroplasty in Parkinson disease is a relatively uncommon entity. There is sparse literature available with regards to total knee arthroplasty (TKA) in Parkinson disease. This review focusses on the necessity, complications and previous experiences on TKA in PD based on the literature available...
2017: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/29147742/varus-tibial-alignment-is-associated-with-greater-tibial-baseplate-migration-at-10%C3%A2-years-following-total-knee-arthroplasty
#10
Matthew G Teeter, Douglas D Naudie, Richard W McCalden, Xunhua Yuan, David W Holdsworth, Steven J MacDonald, Brent A Lanting
PURPOSE: To examine implant migration and articular behavior of primary total knee arthroplasty (TKA) at 10 years after index surgery and correlate to implant alignment. METHODS: Thirty-five patients underwent a cemented posterior stabilized total knee arthroplasty with a surgical objective of neutral alignment and were enrolled in a long-term radiostereometric analysis (RSA) study. At 10 years after surgery, patients were analyzed for implant migration using RSA as well as radiographic assessment of articular behavior at four positions of knee flexion...
November 16, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29143404/tool-for-osteoarthritis-risk-prediction-toarp-over-8-years-using-baseline-clinical-data-x-ray-and-mri-data-from-the-osteoarthritis-initiative
#11
Gabby B Joseph, Charles E McCulloch, Michael C Nevitt, Jan Neumann, Alexandra S Gersing, Martin Kretzschmar, Benedikt J Schwaiger, John A Lynch, Ursula Heilmeier, Nancy E Lane, Thomas M Link
BACKGROUND: Osteoarthritis (OA), a multifactorial disease causing joint degeneration, often leads to severe disability. The rising rates of disability highlight the need for implementing preventative measures at early stages of the disease, which would especially benefit subjects at high risk for OA development. PURPOSE: To develop a risk prediction tool for moderate-severe OA (TOARP) over 8 years based on subject characteristics, knee radiographs, and MRI data at baseline using data from the Osteoarthritis Initiative (OAI)...
November 16, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29119147/betrixaban-a-direct-oral-inhibitor-of-activated-factor-x-for-the-prophylaxis-of-venous-thromboembolism-in-patients-hospitalized-for-acute-medical-illness
#12
G Escolar, M Díaz-Ricart, E Arellano-Rodrigo
Venous thromboembolism (VTE), comprising deep vein thrombosis and pulmonary embolism, is a serious clinical and public health concern. Hospitalization is a major risk factor for developing VTE. Hospital-associated events account for more than 50% of all cases of VTE. Heparins have demonstrated to be efficacious in the prevention of VTE in medically ill patients. Despite the demonstrated efficacy and safety of the available direct oral anticoagulants in the prevention and treatment of different thromboembolic conditions, their net benefit in the prevention of VTE in hospitalized medically ill patients has not been fully confirmed...
August 2017: Drugs of Today
https://www.readbyqxmd.com/read/29110097/geographic-region-socioeconomic-position-and-the-utilisation-of-primary-total-joint-replacement-for-hip-or-knee-osteoarthritis-across-western-victoria-a-cross-sectional-multilevel-study-of-the-australian-orthopaedic-association-national-joint-replacement-registry
#13
Sharon Brennan-Olsen, Sara Vogrin, Kara L Holloway, Richard S Page, Muhammad A Sajjad, Mark A Kotowicz, Patricia M Livingston, Mustafa Khasraw, Sharon Hakkennes, Trish L Dunning, Susan Brumby, Daryl Pedler, Alasdair Sutherland, Svetha Venkatesh, Lana J Williams, Gustavo Duque, Julie A Pasco
Compared to urban residents, those in rural/regional areas often experience inequitable healthcare from specialist service providers. Independent of small between-area differences in utilisation, socially advantaged groups had the greatest uptake of joint replacement. These data suggest low correlation between 'need' vs. 'uptake' of surgery in rural/regional areas. BACKGROUND AND PURPOSE: Compared to urban residents, those in rural and regional areas often experience inequitable healthcare from specialist service providers, often due to geographical issues...
November 6, 2017: Archives of Osteoporosis
https://www.readbyqxmd.com/read/29105568/the-mechanical-response-of-a-polyetheretherketone-femoral-knee-implant-under-a-deep-squatting-loading-condition
#14
Lennert de Ruiter, Dennis Janssen, Adam Briscoe, Nico Verdonschot
The current study was designed to investigate the mechanical response of a polyetheretherketone-on-polyethylene total knee replacement device during a deep squat. Application of this high-demand loading condition can identify weaknesses of the polyetheretherketone relative to cobalt-chromium. This study investigated whether the implant is strong enough for this type of loading, whether cement stresses are considerably changed and whether a polyetheretherketone femoral component is likely to lead to reduced periprosthetic bone loss as compared to a cobalt-chromium component...
November 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29105532/early-aseptic-loosening-of-a-mobile-bearing-total-knee-replacement
#15
Ines Kutzner, Geir Hallan, Paul Johan Høl, Ove Furnes, Øystein Gøthesen, Wender Figved, Peter Ellison
Background and purpose - Registry-based studies have reported an increased risk of aseptic tibial loosening for the cemented Low Contact Stress (LCS) total knee replacement compared with other cemented designs; however, the reasons for this have not been established. We made a retrieval analysis with the aim of identifying the failure mechanism. Patients and methods - We collected implants, cement, tissue, blood, and radiographs from 32 failed LCS Complete cases. Damage to the tibial baseplate and insert was assessed...
November 6, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/29102855/five-times-sit-to-stand-test-in-subjects-with-total-knee-replacement-reliability-and-relationship-with-functional-mobility-tests
#16
Francesc Medina-Mirapeix, Iván Vivo-Fernández, Juan López-Cañizares, José A García-Vidal, Josep Carles Benítez-Martínez, María Elena Del Baño-Aledo
The objective was to determine the inter-observer and test/retest reliability of the "Five-repetition sit-to-stand" (5STS) test in patients with total knee replacement (TKR). To explore correlation between 5STS and two mobility tests. A reliability study was conducted among 24 (mean age 72.13, S.D. 10.67; 50% were women) outpatients with TKR. They were recruited from a traumatology unit of a public hospital via convenience sampling. A physiotherapist and trauma physician assessed each patient at the same time...
October 31, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29102502/total-knee-replacement-cementless-tibial-fixation-with-screws-10-year-results
#17
Önder Ersan, Alper Öztürk, Mehmet Faruk Çatma, Serhan Ünlü, Mutlu Akdoğan, Yalım Ateş
BACKGROUND: The aim of this study was to evaluate the long term clinical and radiological results of cementless total knee replacement. METHODS: A total of 51 knees of 49 patients (33 female and 16 male; mean age: 61.6 years (range, 29-66 years)) who underwent TKR surgery with a posterior stabilized hydroxyapatite coated knee implant were included in this study. All of the tibial components were fixed with screws. The HSS scores were examined preoperatively and at the final follow-up...
November 1, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/29101145/post-operative-patient-related-risk-factors-for-chronic-pain-after-total-knee-replacement-a-systematic-review
#18
Vikki Wylde, Andrew D Beswick, Jane Dennis, Rachael Gooberman-Hill
OBJECTIVE: To identify postoperative patient-related risk factors for chronic pain after total knee replacement (TKR). DESIGN: The systematic review protocol was registered on the International Prospective Register of Systematic Reviews (CRD42016041374). MEDLINE, Embase and PsycINFO were searched from inception to October 2016 with no language restrictions. Key articles were also tracked in the Institute for Scientific Information (ISI) Web of Science. Cohort studies evaluating the association between patient-related factors in the first 3 months postoperatively and pain at 6 months or longer after primary TKR surgery were included...
November 3, 2017: BMJ Open
https://www.readbyqxmd.com/read/29101102/prevalence-of-knee-pain-radiographic-osteoarthritis-and-arthroplasty-in-retired-professional-footballers-compared-with-men-in-the-general-population-a-cross-sectional-study
#19
Gwen Sascha Fernandes, Sanjay Mukund Parekh, Jonathan Moses, Colin Fuller, Brigitte Scammell, Mark Edward Batt, Weiya Zhang, Michael Doherty
OBJECTIVES: To determine the prevalence of knee pain, radiographic knee osteoarthritis (RKOA), total knee replacement (TKR) and associated risk factors in male ex-professional footballers compared with men in the general population (comparison group). METHODS: 1207 male ex-footballers and 4085 men in the general population in the UK were assessed by postal questionnaire. Current knee pain was defined as pain in or around the knees on most days of the previous month...
November 3, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/29096686/vaso-vitamin-d-and-arthroplasty-surgery-outcomes-study-supplementation-of-vitamin-d-deficiency-to-improve-outcomes-after-total-hip-or-knee-replacement-study-protocol-for-a-randomised-controlled-feasibility-trial
#20
Rory J M Morrison, Deborah Bunn, William K Gray, Paul N Baker, Craig White, Amar Rangan, Kenneth S Rankin, Mike R Reed
BACKGROUND: Vitamin D deficiency has been linked to poor outcomes after total hip replacement (THR) or total knee replacement (TKR), including lower patient-reported outcome measures (PROMs), peri-prosthetic infection and longer hospital stay. We present a randomised feasibility trial protocol designed to prospectively investigate the influence of vitamin D testing, and subsequent supplementation for deficiency, prior to THR/TKR. METHODS/DESIGN: One hundred adult patients undergoing primary THR/TKR for osteoarthritis at two NHS hospital trusts in North East England will be recruited...
November 2, 2017: Trials
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