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https://www.readbyqxmd.com/read/28087396/influence-of-coronal-bowing-on-the-lower-alignment-and-the-positioning-of-component-in-navigation-and-conventional-total-knee-arthroplasty
#1
Hideo Kobayashi, Yasushi Akamatsu, Ken Kumagai, Yoshihiro Kusayama, Masato Aratake, Tomoyuki Saito
BACKGROUND: Coronal alignment is an important factor for the function and longevity of total knee arthroplasty (TKA). Coronal bowing of the lower extremity is common among Asians and it may pose a risk for malalignment of the lower leg and malposition of component. HYPOTHESIS: We hypothesized that coronal bowing itself has a risk for malalignment of the lower leg and malposition of femoral / tibial components and that navigation TKA is beneficial for patients with coronal bowing...
January 10, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28079176/adductor-canal-block-versus-femoral-nerve-block-for-total-knee-arthroplasty-a-meta-analysis-of-randomized-controlled-trials
#2
Duan Wang, Yang Yang, Qi Li, Shen-Li Tang, Wei-Nan Zeng, Jin Xu, Tian-Hang Xie, Fu-Xing Pei, Liu Yang, Ling-Li Li, Zong-Ke Zhou
Femoral nerve blocks (FNB) can provide effective pain relief but result in quadriceps weakness with increased risk of falls following total knee arthroplasty (TKA). Adductor canal block (ACB) is a relatively new alternative providing pure sensory blockade with minimal effect on quadriceps strength. The meta-analysis was designed to evaluate whether ACB exhibited better outcomes with respect to quadriceps strength, pain control, ambulation ability, and complications. PubMed, Embase, Web of Science, Wan Fang, China National Knowledge Internet (CNKI) and the Cochrane Database were searched for RCTs comparing ACB with FNB after TKAs...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28078394/kinematics-of-a-bicruciate-retaining-total-knee-arthroplasty
#3
Thomas J Heyse, Joshua Slane, Geert Peersman, Margo Dirckx, Arne van de Vyver, Philipp Dworschak, Susanne Fuchs-Winkelmann, Lennart Scheys
PURPOSE: The recently reintroduced bicruciate-retaining Total Knee Arthroplasty (BCR TKA) is an interesting approach in the quest for close replication of knee joint biomechanics and kinematics closer to the native knee. Therefore, this study aimed at providing a detailed biomechanical view on the functional resemblance of BCR TKA to the native knee joint. METHODS: Seven fresh-frozen full leg cadaver specimens (76 ± 10 year) were mounted in a 6 degrees-of-freedom kinematic rig that applied a dynamic squatting motion knee flexion...
January 11, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28077538/magnesium-sulphate-attenuates-acute-postoperative-pain-and-increased-pain-intensity-after-surgical-injury-in-staged-bilateral-total-knee-arthroplasty-a-randomized-double-blinded-placebo-controlled-trial
#4
H-J Shin, E-Y Kim, H-S Na, T K Kim, M-H Kim, S-H Do
BACKGROUND: We evaluated the effect of magnesium sulphate on increased pain in 44 patients undergoing staged bilateral total knee arthroplasty (TKA). METHODS: The magnesium group (n=22) and the control group (n=22) received magnesium sulphate and isotonic saline, respectively, throughout the surgery. Postoperative pain (visual analogue scale, VAS) at rest and the amounts of patient-controlled analgesia (PCA, fentanyl) and rescue analgesia (ketoprofen) administered during the first 48 h were compared between the two groups and within each group between the first and second TKA...
October 2016: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28077396/the-effects-of-kinematically-aligned-total-knee-arthroplasty-on-stress-at-the-medial-tibia-a-case-study-for-varus-knee
#5
S Nakamura, Y Tian, Y Tanaka, S Kuriyama, H Ito, M Furu, S Matsuda
OBJECTIVES: Little biomechanical information is available about kinematically aligned (KA) total knee arthroplasty (TKA). The purpose of this study was to simulate the kinematics and kinetics after KA TKA and mechanically aligned (MA) TKA with four different limb alignments. MATERIALS AND METHODS: Bone models were constructed from one volunteer (normal) and three patients with three different knee deformities (slight, moderate and severe varus). A dynamic musculoskeletal modelling system was used to analyse the kinematics and the tibiofemoral contact force...
January 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28077124/important-patient-characteristics-differ-prior-to-total-knee-arthroplasty-and-total-hip-arthroplasty-between-switzerland-and-the-united-states
#6
Patricia D Franklin, Hermes Miozzari, Panayiotis Christofilopoulos, Pierre Hoffmeyer, David C Ayers, Anne Lübbeke
BACKGROUND: Outcomes after total knee (TKA) and hip (THA) arthroplasty are often generalized internationally. Patient-dependent factors and preoperative symptom levels may differ across countries. We compared preoperative patient and clinical characteristics from two large cohorts, one in Switzerland, the other in the US. METHODS: Patient characteristics were collected prospectively on all elective primary TKAs and THAs performed at a large Swiss hospital and in a US national sample...
January 11, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28077008/is-decreasing-mortality-in-total-hip-and-knee-arthroplasty-patients-dependent-on-patients-comorbidity
#7
Eva N Glassou, Alma B Pedersen, Torben B Hansen
Background and purpose - Mortality after primary total hip and knee arthroplasty (THA and TKA) has declined, and the proportion of THA and TKA patients with comorbid conditions has increased. We therefore wanted to examine changes in comorbidity burden over time and the impact of comorbid on mortality following primary total hip and knee arthroplasty in patients with osteoarthritis. Patients and methods - We used the Danish arthroplasty registers to identify THA and TKA patients from 1996 through 2013. From administrative databases, we collected data on pre-surgery hospital history for all patients, which were used to calculate the Charlson comorbidity index (CCI)...
January 12, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/28074774/the-dair-debridement-antibiotics-and-implant-retention-procedure-for-infected-total-knee-replacement-a-literature-review
#8
Sultan Naseer Qasim, Andrew Swann, Robert Ashford
Prosthetic joint infection (PJI) is a devastating complication in total knee arthroplasty (TKA) and third most common cause of revision of TKA with significant morbidity and surgical challenges. Treatment options include non-operative measures with long term antibiotic suppression, debridement and implant retention (DAIR), one- or two-stage revision arthroplasty, arthrodesis and amputation. Implant retention without infection is ideal and DAIR has been reported to have variable success rates depending on patient factors, duration of infection, infecting micro-organisms, choice of procedure, single or multiple debridement procedures, arthroscopic or open, antibiotic choice and duration of antibiotic use...
2017: SICOT-J
https://www.readbyqxmd.com/read/28074439/corr-insights-%C3%A2-racial-disparities-in-above-knee-amputations-after-tka-a-national-database-study
#9
Paul J Dougherty
No abstract text is available yet for this article.
January 10, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28072902/development-of-an-encompassing-questionnaire-for-evaluating-the-outcomes-following-total-knee-arthroplasty
#10
Morad Chughtai, Anton Khlopas, Melbin Thomas, Chukwuweike U Gwam, Julio J Jauregui, Randa K Elmallah, Martin Roche, Michael A Mont
INTRODUCTION: There are many standardized scales and questionnaires used to evaluate TKA patients; however, individually they do not always assess patients adequately. Consequently, many are used in combinations to provide a thorough evaluation. However, this leads to redundancy, confusion, and an excessive patient time-burden. Therefore, the purpose of this study was to develop a usable combined knee questionnaire that combines questions in a non-redundant manner. Specifically, we aimed to: 1) create a combined knee questionnaire that encompasses questions from multiple systems, while eliminating redundancy; 2) correlate the new system with the existing validated questionnaires; and 3) determine the length of time it takes to administer this new questionnaire...
10, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/28072900/efficacy-of-adductor-canal-blockade-compared-to-multimodal-peri-articular-analgesia-following-total-knee-arthroplasty
#11
Chukwuweike U Gwam, Jaydev B Mistry, Priya Jha, Anton Khlopas, Melbin Thomas, Morad Chughtai, Michael A Mont, Ronald E Delanois
INTRODUCTION: Postoperative pain after total knee arthroplasty (TKA) can be an impediment to patient recovery. Many commonly used pain control modalities are effective, but are also associated with adverse effects. Other modalities, such as adductor canal blocks (ACB) and multimodal periarticular analgesia (MPA), have gained popularity due to their efficacy and high safety profile. However, to the best of our knowledge, there are no published studies indicating if a therapeutic advantage exists between the two pain control modalities...
January 10, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/28070650/revision-total-knee-arthroplasty-due-to-bone-cement-and-metal-hypersensitivity
#12
Ioannis P Stathopoulos, Nicolaos Andrianopoulos, Dimitrios Paschaloglou, Ioannis Tsarouchas
INTRODUCTION: Hypersensitivity to implants is a rare complication of total knee arthroplasty (TKA). Metal and, less frequently, bone cement can produce allergic symptomatology that if unresponsive to conservative treatment could lead to revision. MATERIALS AND METHODS: We present the case of a patient with generalized pruritus and metal taste starting during the first postoperative month after TKA. Dermal allergy exams revealed that the patient had hypersensitivity to nickel sulphate and cobalt chloride and bone cement...
January 9, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28069329/chronic-kidney-disease-is-an-independent-risk-factor-for-transfusion-cardiovascular-complication-and-thirty-day-readmission-in-minimally-invasive-total-knee-arthroplasty
#13
Feng-Chih Kuo, Po-Chun Lin, Yu-Der Lu, Mel S Lee, Jun-Wen Wang
BACKGROUND: Little is known about the relationship between chronic kidney disease (CKD) and minimally invasive total knee arthroplasty (MIS-TKA). We hypothesized that CKD was an independent risk factor for postoperative complications and increased blood transfusion in patients following MIS-TKA. METHODS: A retrospective review of a prospective database was conducted on patients who underwent MIS-TKAs at an academic medical center between 2009 and 2012. Glomerular filtration rates (GFRs) were calculated for each patient at the time of surgery and a CKD group of 205 patients (GFR < 60 mL/min) were matched at a ratio of 1:2 with 410 patients showing a GFR ≥ 60 mL/min (control group)...
December 14, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28068727/comparison-of-muscle-recovery-following-bi-cruciate-substituting-versus-posterior-stabilized-total-knee-arthroplasty-in-the-asian-population
#14
Akihito Takubo, Keinosuke Ryu, Takanori Iriuchishima, Yasuaki Tokuhashi
The purpose of this study was to compare muscle recovery in the lower extremities following the newly developed bi-cruciate substituting (BCS) to posterior stabilized (PS) total knee arthroplasty (TKA) in the Asian population. Forty-one knees in 41 patients undergoing BCS-TKA (41 female, average age: 71 ± 8.8) and 34 knees in 34 patients undergoing PS-TKA (33 female, average age: 73 ± 7.2) were included in this study. The maximum isometric power of the quadriceps and hamstring muscles was measured preoperatively, and at 1, 3, 6, and 12 months after surgery using a handheld dynamometer...
January 9, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28068306/revision-knee-arthroplasty-in-patients-with-inherited-bleeding-disorders-a-single-center-experience
#15
Andrzej Kotela, Magdalena Wilk-Frańczuk, Piotr Żbikowski, Paweł Łęgosz, Paweł Ambroziak, Ireneusz Kotela
BACKGROUND The results of total knee arthroplasty (TKA) in patients with inherited bleeding disorders (IBDs) are poorer when compared with those in the general population, with a notably higher risk of complications and higher revision rates. Thus, revision procedures are becoming a growing concern in this group of patients. The aim of this study was to evaluate the results of revision TKA in patients with IBD. MATERIAL AND METHODS A retrospective cohort study with longitudinal assessment of hemophilia patients scheduled for revision TKA between January 2010 and September 2015 was performed...
January 9, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28065627/revision-total-hip-and-knee-arthroplasties-after-solid-organ-transplant
#16
Cameron K Ledford, Joseph M Statz, Brian P Chalmers, Kevin I Perry, Arlen D Hanssen, Matthew P Abdel
BACKGROUND: As solid organ transplant (SOT) patients' survival improves, the number undergoing total hip (THA) and total knee arthroplasty (TKA) is increasing. Accordingly, the number of revision procedures in this higher-risk group is also increasing. The goals of this study were to identify the most common failure mechanisms, associated complications, clinical outcomes, and patient survivorship of SOT patients after revision THA or TKA. METHODS: A retrospective review identified 39 revision procedures (30 revision THAs and 9 revision TKAs) completed in 37 SOT patients between 2000 and 2013...
December 11, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28065624/outcome-of-unicondylar-knee-arthroplasty-vs-total-knee-arthroplasty-for-early-medial-compartment-arthritis-a-randomized-study
#17
Vikas Kulshrestha, Barun Datta, Santhosh Kumar, Gaurav Mittal
BACKGROUND: With increasing number of patients with early osteoarthritis of knee opting for total knee arthroplasty (TKA), there has been increase in patients dissatisfied with surgical outcomes. It is being presumed that offering unicondylar knee arthroplasty (UKA) to them would improve outcomes. METHODS: Primary objective of our study was to look for any difference in patient-reported outcome and function at 2-year follow-up in patients undergoing UKA as compared to TKA...
December 23, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28063774/does-addition-of-multimodal-periarticular-analgesia-to-adductor-canal-block-improve-lengths-of-stay-pain-discharge-status-and-opioid-use-after-total-knee-arthroplasty
#18
Chukwuweike U Gwam, Jaydev B Mistry, Anton Khlopas, Morad Chughtai, Melbin Thomas, Michael A Mont, Ronald E Delanois
BACKGROUND: Postoperative pain after total knee arthroplasty (TKA) can be burdensome. Multiple methods of pain control have been used, including adductor canal block (ACB) and multimodal periarticular analgesia (MPA). These two techniques have been studied have proven to be efficacious separately. The purpose of this study was to compare: (1) lengths of stay (LOS), (2) pain level, (3) discharge status, and (4) opioid use in TKA patients who received ACB alone vs patients who received ACB and MPA...
December 14, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28061515/spacer-based-gap-balancing-in-total-knee-arthroplasty-clinical-success-with-a-reproducible-technique
#19
Frédéric Lavoie
Purpose Proper coronal and transverse ligament balancing is an important aspect of total knee arthroplasty (TKA) and has an impact on postoperative outcome. Many variations of the gap balancing technique were described to address this challenge, most of them using various tensioning devices, but none for which the use is widespread. The aim of this paper is to describe a gap technique variant for TKA using spacer blocks and report the clinical results for a cohort of patients on which it was used. Methods A total of 114 TKAs were performed in 101 patients using a standardized surgical technique that integrates ligament balancing with sizing and positioning of the femoral component...
January 6, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28060788/outpatient-total-hip-arthroplasty-total-knee-arthroplasty-and-unicompartmental-knee-arthroplasty-a-systematic-review-of-the-literature
#20
Michael Pollock, Lyndsay Somerville, Andrew Firth, Brent Lanting
BACKGROUND: The demand for total hip arthroplasty (THA), total knee arthroplasty (TKA), and unicompartmental knee arthroplasty (UKA) is growing rapidly because of the proven success of these procedures and an increase in the aging population. However, resources are limited and health-care budgets are finite. Recently, a number of care providers have started performing these procedures on an outpatient basis, with the patients being discharged from the hospital on the day of surgery. The primary objective of this systematic review was to examine the evidence regarding the safety and feasibility of performing THA, TKA, or UKA on an outpatient basis...
December 27, 2016: JBJS Reviews
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