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"Total knee arthroplasty"

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https://www.readbyqxmd.com/read/29141359/-analysis-of-the-tibial-baseplate-coverage-and-symmetrical-tibial-prosthesis-in-primary-total-knee-arthroplasty
#1
C L Zhao, J P Wang, Z H Sun, M Li, J W Chen
Objective: To investigate the tibial baseplate coverage with symmnetrical tibial prosthesis in primary total knee arthroplasty (TKA). Methods: From August 2014 to February 2015, 39 patients (39 knees) with varus knee osteoarthritis were retrospective reviewed in Department of Orthopaedics, Tianjin Xiqing Hospital. Nine males and 30 females; aged 50 to 78 years (67±6 year). 3D tibia models of the knee were built with Mimics 10.01 software, simulated TKA surgeries were performed. The morphology of the proximal tibia was measured, including the mediolateral (ML), anteroposterior (AP) and medial and lateral tibial plateau AP dimensions...
November 7, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29141358/-effect-of-different-tourniquet-releasing-strategy-on-blood-loss-in-total-knee-arthroplasty
#2
Y Li, M Lu, H Tian, Z J Li, K Zhang
Objective: To explore the influences on peri-operative blood loss and postoperative blood transfusion in primary total knee arthroplasty when using different methods to release the pneumatic tourniquet. Methods: From January 2015 to December 2016, 484 patients with osteoarthritis were enrolled, undergoing primary unilateral total knee arthroplasty in the Orthopedics Department of Peking University Third Hospital. Retrospective data was used, and all the patients had been operated on by three independent working groups...
November 7, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29140959/comparison-of-continuous-proximal-versus-distal-adductor-canal-blocks-for-total-knee-arthroplasty-a-randomized-double-blind-noninferiority-trial
#3
Adam W Meier, David B Auyong, Stanley C Yuan, Shin-E Lin, James M Flaherty, Neil A Hanson
BACKGROUND AND OBJECTIVES: Adductor canal blocks (ACBs) are associated with improved analgesia, preserved quadriceps strength, and decreased length of hospitalization after total knee arthroplasty (TKA). However, controversy remains regarding the ideal location of a continuous block within the adductor canal, and it remains unclear whether similar clinical benefits are obtained irrespective of block location. In this randomized, double-blind, noninferiority study, we hypothesized that a continuous proximal ACB provides postoperative analgesia that is no worse than a continuous distal ACB...
November 14, 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/29137899/joint-gap-in-mid-flexion-is-not-a-predictor-of-postoperative-flexion-angle-after-total-knee-arthroplasty
#4
Yukihide Minoda, Shigeru Nakagawa, Ryo Sugama, Tessyu Ikawa, Takahiro Noguchi, Masashi Hirakawa
BACKGROUND: Postoperative knee flexion angle is one of the most important outcomes of total knee arthroplasty (TKA). Intraoperative ligament balancing may affect the postoperative range of motion of the knee. However, the relationship between intraoperative ligament balancing and postoperative flexion angle was still controversial. The purpose of this study was to determine whether intraoperative joint gap affects postoperative knee flexion angle or not. METHODS: Prospective multicenter study of 246 knees with varus osteoarthritis undergoing a posterior-stabilized, mobile-bearing TKA was performed...
November 11, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29137681/influence-of-tourniquet-use-in-primary-total-knee-arthroplasty-with-drainage-a-prospective-randomised-controlled-trial
#5
Kai Zhou, Tingxian Ling, Haoyang Wang, Zongke Zhou, Bin Shen, Jing Yang, Pengde Kang, Fuxing Pei
BACKGROUND: We aimed to compare the effect of tourniquet use or lack of it on recovery following uncomplicated primary total knee arthroplasty (TKA). METHODS: In a prospective randomised double-blinded study, 150 patients undergoing primary TKA were assigned to either a tourniquet or non-tourniquet group. At the early phase, 3 and 6 months after surgery, an independent observer assessed the primary outcome measure (i.e. total blood loss) and secondary outcome measures (i...
November 14, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29137667/selective-medial-soft-tissue-release-combined-with-tibial-reduction-osteotomy-in-total-knee-arthroplasty
#6
Qian Tang, Hua-Chen Yu, Ping Shang, Shang-Kun Tang, Hua-Zi Xu, Hai-Xiao Liu, Yu Zhang
BACKGROUND: To obtain the correct coronal alignment and balancing in flexion and extension, we established a selective medial release technique and investigated the effectiveness and safety of the technique during primary total knee arthroplasty (TKA). METHODS: Four hundred sixty-six primary TKAs with varus deformity were prospectively evaluated between June 2013 and June 2015. A knee joint position similar to Patrick's sign was used to release the medial structure...
November 14, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29135670/in-early-bilateral-medial-compartment-arthritis-unicondylar-and-total-knee-arthroplasty-resulted-in-similar-improvements-in-patient-reported-outcomes-at-2-years
#7
Daniel C Wascher
No abstract text is available yet for this article.
November 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29135661/reconsidering-the-affordable-care-act-s-restrictions-on-physician-owned-hospitals-analysis-of-cms-data-on-total-hip-and-knee-arthroplasty
#8
P Maxwell Courtney, Brian Darrith, Daniel D Bohl, Nicholas B Frisch, Craig J Della Valle
BACKGROUND: Concerns about financial incentives and increased costs prompted legislation limiting the expansion of physician-owned hospitals in 2010. Supporters of physician-owned hospitals argue that they improve the value of care by improving quality and reducing costs. The purpose of the present study was to determine whether physician-owned and non-physician-owned hospitals differ in terms of costs, outcomes, and patient satisfaction in the setting of total hip arthroplasty (THA) and total knee arthroplasty (TKA)...
November 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29134132/abnormal-subchondral-bone-remodeling-and-its-association-with-articular-cartilage-degradation-in-knees-of-type-2-diabetes-patients
#9
Yan Chen, Yong-Can Huang, Chun Hoi Yan, Kwong Yuen Chiu, Qingjun Wei, Jingmin Zhao, X Edward Guo, Frankie Leung, William W Lu
Type 2 diabetes (T2D) is associated with systemic abnormal bone remodeling and bone loss. Meanwhile, abnormal subchondral bone remodeling induces cartilage degradation, resulting in osteoarthritis (OA). Accordingly, we investigated alterations in subchondral bone remodeling, microstructure and strength in knees from T2D patients and their association with cartilage degradation. Tibial plateaus were collected from knee OA patients undergoing total knee arthroplasty and divided into non-diabetic (n=70) and diabetes (n=51) groups...
2017: Bone Research
https://www.readbyqxmd.com/read/29133333/barriers-and-facilitators-to-orthopaedic-surgeons-uptake-of-decision-aids-for-total-knee-arthroplasty-a-qualitative-study
#10
Samantha Bunzli, Elizabeth Nelson, Anthony Scott, Simon French, Peter Choong, Michelle Dowsey
OBJECTIVES: The demand for total knee arthroplasty (TKA) is increasing. Differentiating who will derive a clinically meaningful improvement from TKA from others is a key challenge for orthopaedic surgeons. Decision aids can help surgeons select appropriate candidates for surgery, but their uptake has been low. The aim of this study was to explore the barriers and facilitators to decision aid uptake among orthopaedic surgeons. DESIGN: A qualitative study involving face-to-face interviews...
November 12, 2017: BMJ Open
https://www.readbyqxmd.com/read/29132902/histopathological-assessment-of-primary-osteoarthritic-knees-in-large-patient-cohort-reveal-the-possibility-of-several-potential-patterns-of-osteoarthritis-initiation
#11
V P Mantripragada, N S Piuzzi, T Zachos, N A Obuchowski, G F Muschler, R J Midura
OBJECTIVE: The two main objectives of the study include (1) Test the hypothesis that the lateral femoral condyle (LFC) in patients with primary OA and varus knees undergoing total knee arthroplasty (TKA) can be used as a model to better characterize varying histological features of human OA, (2) Correlate characteristic OA features using the established histopathological scoring systems (HHGS and OARSI) to understand potential histopathological patterns of OA initiation. DESIGN: Two osteochondral specimens (4×4×8mm) were collected from fifty patient's LFC at the time of TKA (total 100 specimens), who presented preserved lateral knee compartment with joint space width>2mm...
November 10, 2017: Current Research in Translational Medicine
https://www.readbyqxmd.com/read/29132552/intravenous-drug-abuse-is-a-risk-factor-in-the-failure-of-two-stage-treatment-for-infected-total-hip-arthroplasty
#12
Yu-Jie Su, Sung-Yen Lin, Hsuan-Ti Huang, Je-Ken Chang, Chung-Hwan Chen
Reinfection after two-stage revision hip arthroplasty (RHA) is still a complex issue. Only few studies revealed the factors affecting the success rate in the treatment of periprosthetic hip infection (PHI), especially risk factors. A retrospective study was conducted using records of 30 patients underwent two-stage RHA for infected total hip arthroplasty (THA). Treatment was defined as successful if a patient did not need any reoperation or invasive procedure such as image-guided drainage during the two years after reimplantation...
December 2017: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/29132347/knee-arthrodesis-versus-above-the-knee-amputation-after-septic-failure-of-revision-total-knee-arthroplasty-comparison-of-functional-outcome-and-complication-rates
#13
Sven Hungerer, Martin Kiechle, Christian von Rüden, Matthias Militz, Knut Beitzel, Mario Morgenstern
BACKGROUND: After septic failure of total knee arthroplasty (TKA) and multiple revision operations resulting in impaired function, bone and/or soft-tissue damage a reconstruction with a revision arthroplasty might be impossible. Salvage procedures to regain mobility and quality of life are an above-the-knee amputation or knee arthrodesis. The decision process for the patient and surgeon is difficult and data comparing arthrodesis versus amputation in terms of function and quality of life are scarce...
November 13, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29130878/a-novel-technique-utilizing-a-vastus-lateralis-anchor-in-treatment-of-chronic-patellar-dislocation-after-total-knee-arthroplasty
#14
Allison Mayfield, Vamsi Singaraju, Afshin A Anoushiravani, Zain Sayeed, Jamal K Saleh, Khaled J Saleh
Extensor mechanism complications involving the patella frequently result in total knee arthroplasty (TKA) failure. Postoperative patellar dislocation may be caused by soft tissue imbalance, improper sizing, and position of the prosthesis. This report describes a case of revision TKA requiring several rounds of soft tissue releases in an effort to treat the patient's chronic patellar dislocation. In the process, a novel surgical approach was developed for the surgical management of refractory chronic patellar dislocations...
October 2017: Journal of Surgical Orthopaedic Advances
https://www.readbyqxmd.com/read/29130875/predictors-of-acute-ischemic-stroke-after-total-knee-arthroplasty
#15
Mariano E Menendez, Eric M Greber, Charles S Schumacher, C Lowry Barnes
Although acute ischemic stroke (AIS) is a feared medical complication after total knee arthroplasty (TKA), little is known about its incidence and risk factors. The purpose of this retrospective populationbased study using the Nationwide Inpatient Sample (2008-2011) was to determine the incidence and predictors of AIS following TKA. The rate of perioperative AIS was 0.08%. Patients undergoing bilateral TKA were almost three times more likely to develop AIS compared with unilateral TKA patients. The age group with the highest odds of AIS was ≥85 years...
October 2017: Journal of Surgical Orthopaedic Advances
https://www.readbyqxmd.com/read/29130112/infection-risk-assessment-in-patients-undergoing-primary-total-knee-arthroplasty
#16
Lazaros A Poultsides, Georgios K Triantafyllopoulos, Vasileios I Sakellariou, Stavros G Memtsoudis, Thomas P Sculco
PURPOSE: To determine the incidence and to identify potential risk factors for in-hospital and late infections, as well as for deep periprosthetic joint infection (PJI) following TKA. METHODS: We identified 17,959 patients treated with primary TKA between 2000 and 2009. We recorded patient demographics, comorbidities and in-hospital complications. The rates of in-hospital, late, and deep PJIs were determined. Different logistic regression models were built to identify risk factors for each of the above types of infection...
November 12, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/29129618/rotating-hinge-implants-for-complex-primary-and-revision-total-knee-arthroplasty
#17
Sean M Kearns, Brian M Culp, Daniel D Bohl, Scott M Sporer, Craig J Della Valle, Brett R Levine
BACKGROUND: Contemporary rotating hinge knee (RHK) prosthesis has shown improved survival rates over earlier generations. However, reports of high complication and mechanical failure rates highlight the need for more clinical outcome data in the complex primary and revision setting. The purpose of this study is to report our results of using a contemporary rotating hinge for complex primary and revision total knee arthroplasty. METHODS: Using a prospectively maintained surgical database, 79 knees in 76 patients who underwent an RHK of a single design for either a complex primary (14 knees) or revision total knee arthroplasty (65 knees) were identified...
October 16, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29129615/patients-with-major-depressive-disorder-experience-increased-perception-of-pain-and-opioid-consumption-following-total-joint-arthroplasty
#18
Jennifer I Etcheson, Chukwuweike U Gwam, Nicole E George, Sana Virani, Michael A Mont, Ronald E Delanois
BACKGROUND: Pain in the immediate postoperative period following total joint arthroplasty is influenced by various patient factors, including major depressive disorder (MDD). Therefore, this study aimed to compare the patient perception of pain and opioid consumption between patients with and without MDD who received either a total knee arthroplasty (TKA) or total hip arthroplasty (THA). Specifically, we compared (1) pain intensity, (2) lengths of stay, (3) opioid consumption, and (4) patient perception of pain control...
October 24, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29129608/no-exacerbation-of-knee-joint-pain-and-effusion-following-preoperative-progressive-resistance-training-in-patients-scheduled-for-total-knee-arthroplasty-secondary-analyses-from-a-randomized-controlled-trial
#19
Birgit Skoffer, Ulrik Dalgas, Thomas Maribo, Kjeld Søballe, Inger Mechlenburg
BACKGROUND: Preoperative progressive resistance training (PRT) is controversial in patients scheduled for total knee arthroplasty (TKA), because of the concern that it may exacerbate knee joint pain and effusion. OBJECTIVE: To examine if preoperative PRT initiated 5 weeks prior to TKA would 1) exacerbate pain and knee effusion, 2) allow a progressively increased training load throughout the training period that would subsequently increase muscle strength. DESIGN: Secondary analyses from a randomized controlled trial...
November 9, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29128879/the-oarsi-core-set-of-performance-based-measures-for-knee-osteoarthritis-is-reliable-but-not-valid-and-responsive
#20
J J Tolk, R P A Janssen, C A C Prinsen, D A J M Latijnhouwers, M C van der Steen, S M A Bierma-Zeinstra, M Reijman
PURPOSE: The Osteoarthritis Research Society International has identified a core set of performance-based tests of physical function for use in people with knee osteoarthritis (OA). The core set consists of the 30-second chair stand test (30-s CST), 4 × 10 m fast-paced walk test (40 m FPWT) and a stair climb test. The aim of this study was to evaluate the reliability, validity and responsiveness of these performance-based measures to assess the ability to measure physical function in knee OA patients...
November 11, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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