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https://www.readbyqxmd.com/read/28321477/total-knee-arthroplasty-after-varus-distal-femoral-osteotomy-vs-native-knee-similar-results-in-a-case-control-study
#1
Romain Gaillard, Timothy Lording, Sebastien Lustig, Elvire Servien, Philippe Neyret
PURPOSE: The aim of this study was to investigate the results of total knee arthroplasty (TKA) performed after varus distal femoral osteotomy (VrDFO), in comparison to a control group of TKAs performed as the primary intervention for arthrosis. Main hypothesis was that the medium term results for the two groups would be similar. METHODS: All TKAs performed after VrDFO were extracted from a single centre, prospective database of 4046 arthroplasties. A case-control study was performed with a control group comprising two TKAs performed as the primary intervention for each TKA after VrDFO, and matched for sex, age at intervention, body mass index, the type of arthrosis and the type of implant...
March 20, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28318305/on-demand-driver-vigilance-enhancement-without-explicit-drowsiness-detection-further-analysis-of-the-pilot-study-results
#2
R Michael Van Auken, Brad K Hagoski, Dean P Chiang, Shane Chang
OBJECTIVE: A new active safety concept that engages the driver's psychosensory pain-processing mechanism to automatically trigger vigilance enhancement on-demand was proposed in Chang ( 2012 ). This concept is based on the hypothesis that a human's pain threshold will decline as he/she becomes drowsy, consequently triggering the vigilance enhancer. The objective of this pilot study was to develop methods to test this hypothesis, the results of which could lead to further refinement of the hypothesis and methods, with the ultimate goal of developing new active safety concepts that exploit the driver's endogenous psychosensory pain-processing mechanisms...
March 20, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28302132/long-term-results-and-comparison-of-the-three-different-high-tibial-osteotomy-and-fixation-techniques-in-medial-compartment-arthrosis
#3
Gökhan Polat, Halil İbrahim Balcı, Mehmet Fevzi Çakmak, Mehmet Demirel, Cengiz Şen, Mehmet Aşık
BACKGROUND: The purpose of this study is to report and analyze the long-term outcomes of the patients who underwent high tibial osteotomy (HTO) with three different techniques for the treatment of medial compartment arthrosis. METHODS: A total of 187 patients (195 knees) who underwent HTO between 1990 and 2010 were retrospectively evaluated. Eighty-eight knees, opening-wedge osteotomy with Puddu plate (group A); 51 knees, transverse osteotomy below the tubercle with external fixator (group B); and 29 knees, closing-wedge osteotomy with staple fixation (group C) were included in the study...
March 16, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28300964/effects-of-a-12-hour-shift-on-mood-states-and-sleepiness-of-neonatal-intensive-care-unit-nurses
#4
Tadeu Sartini Ferreira, Clarice Zinato Moreira, James Guo, Franco Noce
OBJECTIVE: To assess the effect of a 12-hour shift on mood states and sleepiness at the beginning and end of the shift. METHOD: Quantitative, cross-sectional and descriptive study.It was conducted with 70 neonatal intensive care unit nurses. The Brunel Mood Scale (BRUMS), Karolinska Sleepiness Scale (KSS), and a socio-demographic profile questionnaire were administered. RESULTS: When the KSS and BRUMS scores were compared at the beginning of the shift associations were found with previous sleep quality (p ≤ 0...
March 9, 2017: Revista da Escola de Enfermagem da U S P
https://www.readbyqxmd.com/read/28293867/binding-specificity-of-r-10g-and-tra-1-60-81-and-substrate-specificity-of-keratanase-ii-studied-with-chemically-synthesized-oligosaccharides
#5
Hiromi Nakao, Yuko Nagai, Aya Kojima, Hidenao Toyoda, Nobuko Kawasaki, Toshisuke Kawasaki
Recently, we established a mouse monoclonal antibody specific to hiPS/ hES cells, R-10G, which recognizes a type of keratan sulfate. Keratan sulfates (KS) comprise a family of glycosaminoglycans consisting of the repeating unit of [Gal-GlcNAc(6S)]. However, there is a diversity in the degree of sulfation at Gal and GlcNAc residues, and also in the mode of linkage, Galβ1 - 3GlcNAc (type 1) or Galβ1 - 4GlcNAc (type 2). To gain more insight into the binding specificity of R-10G, we carried out an ELISA test on avidin-coated plates using polyethylene glycol (PEG)3-biotinylated derivatives of a series of N-acetyllactosamine tetrasaccharides (keratan sulfates (KSs))...
March 14, 2017: Glycoconjugate Journal
https://www.readbyqxmd.com/read/28261432/comparison-of-clinical-and-radiological-results-according-to-glenosphere-position-in-reverse-total-shoulder-arthroplasty-a-short-term-follow-up-study
#6
Chang Hyuk Choi, Sung Guk Kim, Jae Jun Lee, Byung Hoon Kwack
BACKGROUND: In a previous biomechanical study, eccentric glenospheres with more inferior position of the center of rotation were shown to improve range of motion and reduce the incidence of scapular notching after reverse total shoulder arthroplasty (RSA). The purpose of this study was to compare the clinical and radiological results of RSA using an eccentric glenosphere to those using a concentric glenosphere and to determine the usefulness of the eccentric glenosphere. METHODS: From 2009 to 2015, we performed a retrospective review of 20 consecutive patients who underwent RSA using a deltopectoral approach...
March 2017: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/28253923/patient-reported-health-outcomes-after-total-hip-and-knee-surgery-in-a-dutch-university-hospital-setting-results-of-twenty-years-clinical-registry
#7
Philip J van der Wees, Joost J G Wammes, Reinier P Akkermans, Jan Koetsenruijter, Gert P Westert, Albert van Kampen, Gerjon Hannink, Maarten de Waal-Malefijt, B Willem Schreurs
BACKGROUND: Patient-Reported Outcome (PRO) measurement is a method for measuring perceptions of patients on their health and quality of life. The aim of this paper is to present the results of PRO measurements in total hip and knee replacement as routinely collected during 20 years of surgery in a university hospital setting. METHODS: Data of consecutive patients between 1993 and 2014 were collected. Health outcomes were measured pre-surgery and at 3, 6, and 12 months post-surgery...
March 3, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28241088/clinical-outcome-of-total-knee-arthroplasty-after-prior-microfracture-a-matched-cohort-study
#8
Mohammad Humza Ansari, Ayoosh Pareek, Nick R Johnson, Matthew P Abdel, Michael J Stuart, Aaron J Krych
Microfracture (MFX) is a common operation for articular cartilage lesions. Data for patients who underwent total knee arthroplasty (TKA) after previous MFX are limited. The purpose of this study was to determine the outcomes, complications, and factors that influence outcomes in patients with previous MFX compared with those without previous MFX. Between 2005 and 2014, twenty-one TKAs were performed at a single tertiary care academic institution in patients with prior history of MFX surgery. These patients were retrospectively reviewed and matched 2:1 to patients who did not undergo previous MFX (n=42)...
February 27, 2017: Orthopedics
https://www.readbyqxmd.com/read/28237217/outcomes-of-newer-generation-cementless-total-knee-arthroplasty-beaded-periapatite-coated-vs-highly-porous-titanium-coated-implants
#9
Steven F Harwin, Nirav K Patel, Morad Chughtai, Anton Khlopas, Prem N Ramkumar, Martin Roche, Michael A Mont
BACKGROUND: Newer generation cementless total knee arthroplasty (TKA) designs are available and have novel implant coatings. We evaluated and compared beaded periapatite (PA)-coated vs highly porous titanium-coated cementless TKAs. Specifically, we compared: (1) survivorship, (2) Knee Society Scores (KSSs) and range of motion, (3) complications, and (4) radiographic findings. METHODS: There were 805 TKAs with beaded PA-coated tibial and patellar components (PA group; mean age 67 years; range 41-86 years), and 219 TKAs with highly porous titanium-coated tibial and patella components (mean age 66 years; range 34-88 years)...
February 3, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28216747/complex-ao-type-c3-distal-femur-fractures-results-after-fixation-with-a-lateral-locked-plate-using-modified-swashbuckler-approach
#10
Anuj Agrawal, Vivek Kiyawat
BACKGROUND: Complex AO type C3 fractures of the distal femur are challenging injuries, fraught with complications such as malunion and stiffness. We prospectively evaluated a consecutive series of patients with complex AO type C3 distal femur fractures to determine the clinicoradiological outcome after fixation with a single locked plate using modified swashbuckler approach. MATERIALS AND METHODS: 12 patients with C3 type distal femur fractures treated with a lateral locked plate, using a modified swashbuckler approach, were included in the study...
January 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28196393/does-manipulation-under-anesthesia-increase-the-risk-of-revision-total-knee-arthroplasty-a-matched-case-control-study
#11
Todd P Pierce, Kimona Issa, Anthony Festa, Anthony J Scillia, Vincent K McInerney, Michael A Mont
Manipulation under anesthesia (MUA) can help patients regain an adequate range of motion (ROM) following total knee arthroplasty (TKA). Although there are studies reporting that MUA can assist in improving ROM, there is a paucity of studies regarding whether requiring an MUA is associated with an increased risk of revision. The purpose of this study was to assess the: (1) incidence of revision TKA and (2) outcomes of those undergoing MUA and compare it with a matched cohort who did not require MUA. A prospectively collected database of two high-volume institutions was assessed for patients who required a single MUA following TKA between 2005 and 2011...
February 14, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28188394/algorithmic-pie-crusting-of-the-medial-collateral-ligament-guided-by-sensing-technology-affects-the-use-of-constrained-inserts-during-total-knee-arthroplasty
#12
Spencer Amundsen, Yuo-Yu Lee, Alejandro González Della Valle
BACKGROUND: Intra-operative sensing technology is an alternative to standard techniques in total knee arthroplasty (TKA) for determining balance by providing quantitative analysis of loads and point of contact throughout a range of motion. We used intra-operative sensing (VERASENSE-OrthoSensor, Inc.) to examine pie-crusting release of the medial collateral ligament in knees with varus deformity (study group) in comparison to a control group where balance was obtained using a classic release technique and assessed using laminar spreaders, spacer blocks, manual stress, and a ruler...
February 10, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28170228/a-pair-of-residues-that-interactively-affect-diterpene-synthase-product-outcome
#13
Meirong Jia, Ke Zhou, Samuel Tufts, Samuel Schulte, Reuben J Peters
The labdane-related diterpenoids (LRDs) are an important superfamily of natural products whose structural diversity critically depends on the hydrocarbon skeletal structures generated, in large part, by class I diterpene synthases. In the plant kingdom, where the LRDs are predominantly found, the relevant class I diterpene synthases are clearly derived from the ent-kaurene synthase (KS) required in all land plants for phytohormone biosynthesis and, hence, are often termed KS-like (KSL). Previous work, initiated by the distinct function of two alleles of a KSL from rice, OsKSL5, identified a single residue switch with a profound effect on not only OsKSL5 product outcome but also that of land plant KSs more broadly, specifically, replacement of a key isoleucine with threonine, which interrupts formation of the tetracyclic ent-isokaurene at the tricyclic stage, leading to production of ent-pimaradiene instead...
March 17, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28166895/effects-of-vibration-on-occupant-driving-performance-under-simulated-driving-conditions
#14
Amzar Azizan, M Fard, Michael F Azari, Reza Jazar
Although much research has been devoted to the characterization of the effects of whole-body vibration on seated occupants' comfort, drowsiness induced by vibration has received less attention to date. There are also little validated measurement methods available to quantify whole body vibration-induced drowsiness. Here, the effects of vibration on drowsiness were investigated. Twenty male volunteers were recruited for this experiment. Drowsiness was measured in a driving simulator, before and after 30-min exposure to vibration...
April 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28161774/outcome-following-subluxation-of-mobile-articulating-spacers-in-two-stage-revision-total-knee-arthroplasty
#15
Brent A Lanting, Adrian Lau, Matthew G Teeter, James L Howard
INTRODUCTION: Infection after total knee arthroplasty (TKA) is a severe complication. It is usually treated with two-stage revision and implantation of a cement spacer. Few studies describe the complications associated with a mobile articulating spacer. This study examined the subluxation of articulating antibiotic spacers in knees and correlated it with prospectively collected early outcome scores after implantation of a revision prosthesis. METHODS: Staged revisions for 72 infected primary total knee arthroplasties between 2004 and 2012 were examined...
February 4, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28159566/a-systematic-review-of-self-administered-questionnaires-for-the-functional-assessment-of-patients-with-knee-disabilities-adapted-into-spanish
#16
S Gómez-Valero, F García-Pérez, M T Flórez-García, J C Miangolarra-Page
OBJECTIVE: The aim of this study was to conduct a systematic review of self-administered knee-disability functional assessment questionnaires adapted to Spanish, analysing the quality of the transcultural adaptation procedure and the psychometric properties of the new version. MATERIAL AND METHODS: A search was conducted in the main biomedical databases to find knee-function assessment scales adapted into Spanish, in order to assess their questionnaire adaptation process as well as their psychometric properties...
January 31, 2017: Revista Española de Cirugía Ortopédica y Traumatología
https://www.readbyqxmd.com/read/28157081/evaluation-of-outcomes-of-total-knee-replacement-with-and-without-a-navigation-system
#17
Marek Synder, Munaf A Hatim Altimimi, Andrzej Borowski, Marcin Sibiński, Marek Drobniewski
BACKGROUND: The aim of this study was to compare the results of TKA performed with the use of a navigation system vs. conventional knee arthroplasty and to evaluate the effectiveness of navigation system support in TKA. MATERIAL AND METHODS: We evaluated patients undergoing TKA for osteoarthritis in the years 2011-2013. Columbus prostheses were implanted in 84 knees. Group 1 included patients in whom TKA was performed with the use of the OrthoPilot Navigation System, and Group 2 was a control group of patientsundergoing conventional TKA...
May 5, 2016: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/28146397/a-prospective-randomized-study-comparing-the-interference-screw-and-suture-anchor-techniques-for-biceps-tenodesis
#18
Ji Soon Park, Sae Hoon Kim, Ho Jin Jung, Ye Hyun Lee, Joo Han Oh
BACKGROUND: Several methods are used to perform biceps tenodesis in patients with superior labrum-biceps complex (SLBC) lesions accompanied by a rotator cuff tear. However, limited clinical data are available regarding the best technique in terms of clinical and anatomic outcomes. PURPOSE: To compare the clinical and anatomic outcomes of the interference screw (IS) and suture anchor (SA) fixation techniques for biceps tenodesis performed along with arthroscopic rotator cuff repair...
February 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28145948/total-knee-arthroplasty-after-anterior-cruciate-ligament-reconstruction-not-just-a-routine-primary-arthroplasty
#19
Tyler Steven Watters, Yuan Zhen, J Ryan Martin, Daniel L Levy, Jason M Jennings, Douglas A Dennis
BACKGROUND: Despite the success of restoring joint stability and improving early functional outcomes after anterior cruciate ligament (ACL) reconstruction, the long-term risk of developing symptomatic osteoarthritis requiring total knee arthroplasty is higher than that in the uninjured population. The purpose of this study was to compare operative characteristics and early outcomes of patients undergoing total knee arthroplasty after ACL reconstruction with those of a matched cohort of control subjects with primary osteoarthritis and no history of ligament reconstruction...
February 1, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28144717/-individualized-unicondylar-knee-replacement-use-of-patient-specific-implants-and-instruments
#20
J Arnholdt, B M Holzapfel, L Sefrin, M Rudert, J Beckmann, A F Steinert
OBJECTIVE: Unicompartmental knee replacement in patients with osteoarthritis (OA) of the medial compartment. Individualized instruments and implants with a planning protocol for optimal fit. The individualized instruments and implants (ConforMIS Inc.; Burlington, MA, USA) are manufactured based on a computed tomography scan of the affected lower extremity and are provided together with a planning protocol (iView®) of the surgery. INDICATIONS: Unicompartmental OA of the knee (Kellgren & Lawrence stage IV) or Morbus Ahlbäck after unsuccessful conservative or joint preserving surgery...
February 2017: Operative Orthopädie und Traumatologie
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