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"Total knee arthroplasty"

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https://www.readbyqxmd.com/read/28528349/high-wear-resistance-of-femoral-components-coated-with-titanium-nitride-a-retrieval-analysis
#1
Christian Fabry, Carmen Zietz, Axel Baumann, Reinhard Ehall, Rainer Bader
PURPOSE: The objective of this study was to evaluate the in vivo wear resistance of cobalt-chromium femoral components coated with titanium nitride (TiN). Our null hypothesis was that the surface damage and the thickness of the TiN coating do not correlate with the time in vivo. METHODS: Twenty-five TiN-coated bicondylar femoral retrievals with a mean implantation period of 30.7 ± 11.7 months were subjected to an objective surface damage analysis with a semi-quantitative assessment method...
May 20, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28527700/failure-of-hightibialvarus-osteotomy-for-lateral-tibio-femoral-osteoarthritis-with-10%C3%A2-of-valgus-outcomes-in-19-patients
#2
G Mirouse, A Dubory, F Roubineau, A Poignard, P Hernigou, J Allain, C H Flouzat Lachaniette
BACKGROUND: Osteotomy is a rational approach to slowing knee osteoarthritis progression by modifying loads, thereby avoiding joint replacement in younger individuals. Varus femoral osteotomy is recommended only in patients with more than 10° of valgus. The objective here was to assess outcomes of tibialvarus osteotomy in patients with lateral compartment tibio-femoral osteoarthritis and less than 10° of valgus. MATERIAL AND METHODS: A single-centre retrospective study was conducted in 19 consecutive patients managed by high tibialvarus osteotomy between January 2005 and May 2012...
May 17, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28526236/management-of-severe-valgus-knee-by-total-unconstrained-arthroplasty-a-comparative-study-with-long-term-follow-up
#3
X Paredes-Carnero, A B Fernández-Cortiñas, J Escobar, J M Galdo, J G Babé
OBJECTIVE: To evaluate the use of unconstrained implants in the correction of large valgus deformities using total knee arthroplasty (TKA). MATERIAL AND METHOD: A total of 817 primary TKA operated between 1998 and 2006 were retrospectively assessed. 50 TKA were selected (group A) in 49 patients, with a minimum deformity of 15° of valgus, 41 cases were included. Another 50 ATR were selected (group B), with a maximum deformity of 15° of varus, finally including 44 cases in 42 patients...
May 16, 2017: Revista Española de Cirugía Ortopédica y Traumatología
https://www.readbyqxmd.com/read/28526202/capnocytophaga-canimorsus-an-underestimated-cause-of-periprosthetic-joint-infection
#4
Marcel Orth, Patrick Orth, Konstantinos Anagnostakos
BACKGROUND: Periprosthetic joint infection (PJI) is a major clinical problem in orthopedic surgery. Capnocytophaga canimorsus (C. canimorsus) is an unusual and hardly detectable bacterium. A review of the literature indicates that C. canimorsus affects mainly immunocompromised patients. It has not been reported to cause periprosthetic joint infections in immunocompetent patients so far. This case report aims to raise awareness of C. canimorsus in orthopedic surgery with special regard to joint arthroplasty...
May 16, 2017: Knee
https://www.readbyqxmd.com/read/28524620/clinical-performance-and-survivorship-of-navigated-floating-platform-mobile-bearing-total-knee-arthroplasty-a-minimum-10-year-follow-up
#5
Sang-Min Kim, Jai-Gon Seo, Seung-Jae Lim, Hyung-Tae Lim, Chang-Ho Cho, Young-Wan Moon
BACKGROUND: The purpose of this study is to report the outcome of navigation-assisted cruciate-retaining total knee arthroplasty (TKA) using one type of cemented, second-generation, floating-platform (FP), mobile-bearing system. METHODS: Forty-two patients who underwent cruciate retaining TKAs using e.motion-FP prostheses under navigational guidance were retrospectively reviewed. The preoperative diagnosis was osteoarthritis in all knees except one rheumatoid arthritis...
May 19, 2017: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/28511945/low-rates-of-aseptic-tibial-loosening-in-obese-patients-with-use-of-high-viscosity-cement-and-standard-tibial-tray-2-year-minimum-follow-up
#6
David A Crawford, Keith R Berend, Denis Nam, Robert L Barrack, Joanne B Adams, Adolph V Lombardi
BACKGROUND: Total knee arthroplasty is overall a very successful surgery, but complications do occur. These complications include aseptic loosening of the tibial component, and obese patients are among the highest risk group. High-viscosity cement (HVC) has been implicated as a possible cause for aseptic loosening of the tibial component. The purpose of this study was to evaluate the incidence of aseptic loosening of the tibial component in obese patients with the use of HVC and standard tibial tray...
April 22, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28511664/yields-and-chondrogenic-potential-of-primary-synovial-mesenchymal-stem-cells-are-comparable-between-rheumatoid-arthritis-and-osteoarthritis-patients
#7
Yuji Kohno, Mitsuru Mizuno, Nobutake Ozeki, Hisako Katano, Keiichiro Komori, Shizuka Fujii, Koji Otabe, Masafumi Horie, Hideyuki Koga, Kunikazu Tsuji, Mikio Matsumoto, Haruka Kaneko, Yuji Takazawa, Takeshi Muneta, Ichiro Sekiya
BACKGROUND: Mesenchymal stem cells derived from the synovial membrane (synovial MSCs) are a candidate cell source for regenerative medicine of cartilage and menisci due to their high chondrogenic ability. Regenerative medicine can be expected for RA patients with the inflammation well-controlled as well as OA patients and transplantation of synovial MSCs would also be a possible therapeutic treatment. Some properties of synovial MSCs vary dependent on the diseases patients have, and whether or not the pathological condition of RA affects the chondrogenesis of synovial MSCs remains controversial...
May 16, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28511465/digging-deeper-into-the-patello-femoral-joint-patello-femoral-composite-a-new-dimension-for-overstuffing-of-patello-femoral-joint
#8
Vikram Kishor Kandhari, Mohan M Desai, Surendar S Bava, Roshan N Wade
INTRODUCTION: Patello-femoral complications are the most common complications in postoperative Total Knee Arthroplasty (TKA) patients especially overstuffing of Patello - Femoral Joint (PFJ). So, to study the effects of overstuffing of PFJ in postoperative TKA patients we put forth a new dimension - "PATELLO - FEMORAL COMPOSITE (PFC)". This is the maximum distance between anterior cortical line of femur shaft and the anterior cortex of patella with knee in full extension. AIM: To calculate chances of overstuffing of PFJ in postoperative TKA patients and document the effect of overstuffing of PFJ on the passive knee Range of Motion (ROM) in post- op TKA patients...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28509829/in-total-knee-arthroplasty-patient-matched-positioning-guides-and-conventional-instruments-did-not-differ-in-terms-of-clinical-outcomes-or-complications-at-two-years
#9
Denis Nam
No abstract text is available yet for this article.
May 17, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28509820/impact-of-preoperative-opioid-use-on-total-knee-arthroplasty-outcomes
#10
Savannah R Smith, Jennifer Bido, Jamie E Collins, Heidi Yang, Jeffrey N Katz, Elena Losina
BACKGROUND: There is growing concern about the use of opioids prior to total knee arthroplasty (TKA), and research has suggested that preoperative opioid use may lead to worse pain outcomes following surgery. We evaluated the pain relief achieved by TKA in patients who had and those who had not used opioids use before the procedure. METHODS: We augmented data from a prospective cohort study of TKA outcomes with opioid-use data abstracted from medical records. We collected patient-reported outcomes and demographic data before and 6 months after TKA...
May 17, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28508511/clinical-nociceptive-and-psychological-profiling-to-predict-acute-pain-after-total-knee-arthroplasty
#11
I E Luna, H Kehlet, M A Petersen, E K Aasvang
BACKGROUND: Pre-operative identification of high-pain responders for acute pain after total knee arthroplasty (TKA) could lead to targeted analgesic trials and individualized analgesic strategies to improve recovery and potentially reduce the risk of persistent post-surgical pain. The aim of this study was to use simple clinical tests and questionnaires to identify predictive nociceptive and psychological factors for acute post-TKA pain. METHODS: Sixty consecutive TKA patients were included in a prospective descriptive study of pain during a 5-m walk-test 24 h post-operatively as the primary outcome...
May 16, 2017: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/28507975/charcot-fracture-in-the-calcaneus-after-total-knee-arthroplasty-a-case-report
#12
Hirokazu Takai, Katsuhiko Kiyota, Nobutake Nakane, Tomoki Takahashi
INTRODUCTION: Only a few reports have described calcaneus fractures after total knee arthroplasty (TKA). Therefore, in this report, we describe a case of calcaneal avulsion fracture that occurred 5 weeks after a TKA in a relatively young male patient with syphilis. CASE REPORT: A 63-year-old man with syphilis had Charcot joint of the right knee. The patient developed severe varus deformity and contracture and experienced severe pain in the knee. TKA was performed to alleviate the pain and improve the patient's gait...
November 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28507777/the-role-of-isolated-polyethylene-exchange-in-total-knee-arthroplasty
#13
REVIEW
Hee-Nee Pang, Hamid Rahmatullah Bin Abd Razak, Stephen Petis, Douglas D R Naudie, Steven J MacDonald
The use of modular total knee arthroplasty (TKA) implants allows surgeons to perform isolated tibial polyethylene insert exchange (IPE) while retaining well-fixed and stable components.The purported advantages of IPE include preservation of bone stock, shorter operating time, less blood loss, faster rehabilitation and lower cost. However, the indications for IPE are limited.IPE for wear and osteolysis has moderate success in the medium term but should be avoided in cases of accelerated wear. In selected cases, debridement and IPE for early infection can result in low morbidity with high success rates in the short term...
March 2017: EFORT Open Rev
https://www.readbyqxmd.com/read/28507566/comparison-of-intra-articular-versus-intravenous-application-of-tranexamic-acid-in-total-knee-arthroplasty-a-meta-analysis-of-randomized-controlled-trials
#14
REVIEW
Yaming Liu, Fantao Meng, Gang Yang, Lingde Kong, Yong Shen
INTRODUCTION: There is much controversy about the optimal application of tranexamic acid (TXA) in total knee arthroplasty (TKA). The purpose of this meta-analysis was to compare the efficacy of the intra-articular and intravenous regimens of TXA in TKA. MATERIAL AND METHODS: A literature search of the PubMed, Embase and Cochrane Library databases was performed. Randomized controlled trials comparing the result of intra-articular and intravenous application of TXA during TKA were included...
April 1, 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28505684/does-gender-influence-how-patients-rate-their-patient-experience-after-total-knee-arthroplasty
#15
Marcelo B P Siqueira, Morad Chughtai, Anton Khlopas, Chukwuweike U Gwam, Jaydev B Mistry, George A Yakubek, Ronald E Delanois, Michael A Mont
No abstract text is available yet for this article.
May 15, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28505683/tranexamic-acid-effectively-reduces-blood-loss-and-transfusion-rates-during-simultaneous-bilateral-total-knee-arthroplasty
#16
Hernan A Prieto, Heather K Vincent, Justin T Deen, Dane A Iams, Hari K Parvataneni
No abstract text is available yet for this article.
May 15, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28503200/a-retrospective-cohort-study-of-adverse-events-in-patients-undergoing-orthopaedic-surgery
#17
Joel J Gagnier, Hal Morgenstern, Patrick Kellam
BACKGROUND: This study's objective was to identify adverse events following common orthopaedic procedures, and to estimate the incidence rates and risks of these events and their associations with age, sex, and comorbidities. METHODS: This retrospective cohort study manually reviewed and extracted electronic medical data on the incidence and predictors of adverse events that occurred within 90 days of the 50 most frequent orthopaedic surgeries at an academic hospital in 2010...
2017: Patient Safety in Surgery
https://www.readbyqxmd.com/read/28503072/long-term-clinical-benefit-and-cost-effectiveness-of-an-8-week-multimodal-knee-osteoarthritis-management-program-incorporating-intra-articular-sodium-hyaluronate-hyalgan-%C3%A2-injections
#18
Larry E Miller, Michael J Sloniewsky, Thomas E Gibbons, Janice G Johnston, Kent D Vosler, Saad Nasir
BACKGROUND: Given the poor long-term effectiveness of focused nonsurgical knee osteoarthritis (OA) treatments, alternative therapies are needed for patients who have unsuccessfully exhausted nonsurgical options. METHODS: A telephone interview was conducted in patients who participated in a single 8-week multimodal knee OA treatment program (mean follow-up: 3.7 years, range: 2.7-4.9 years). The program consisted of five intra-articular knee injections of sodium hyaluronate (Hyalgan(®)), with each injection given 1 week apart, structured physical therapy, knee bracing, and patient education...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28502570/a-comparison-of-short-term-radiological-alignment-outcomes-of-the-patient-specific-and-standard-instrumentation-for-primary-total-knee-arthroplasty-a-systematic-review-and-meta-analysis
#19
Ilhan Alcelik, Mark Blomfield, Cenk Öztürk, Ashish Soni, Richard Charity, Alex Acornley
OBJECTIVE: The aim of this study was to review the radiological alignment outcomes of patient Specific (PS) cutting blocks and Standard Instrumentation in Primary Total Knee Arthroplasty. METHODS: We hypothesized that the use of PS techniques would significantly improve sagittal, coronal and rotational alignment of the prosthesis on short term. We performed a systematic review and a meta-analysis including all the randomised controlled trials (RCT) using PS and standard (ST) total knee arthroplasty to date...
May 11, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/28502536/results-of-a-modular-revision-system-in-total-knee-arthroplasty
#20
David A Crawford, Keith R Berend, Michael J Morris, Joanne B Adams, Adolph V Lombardi
BACKGROUND: Revision total knee arthroplasty (TKA) poses unique challenges compared with primary TKA such as bone loss, deformity, and ligament instability. Modular component options allow flexibility to deal with these complexities. The purpose of this study was to evaluate midterm outcomes for revision TKA using a modular revision knee system with complete interchangeability and multiple options for augmentation, offset, constraint, and stem extensions. METHODS: A query of our practice registry revealed 257 consented patients (274 knees and 278 TKA) with minimum 2-year follow-up who underwent aseptic revision TKA with a modular system (Vanguard Super Stabilized Knee; Zimmer Biomet, Warsaw, IN) between 2005 and 2013...
April 10, 2017: Journal of Arthroplasty
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