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https://www.readbyqxmd.com/read/28938108/cervical-arthroplasty-versus-anterior-cervical-fusion-for-symptomatic-adjacent-segment-disease-after-anterior-cervical-fusion-surgery-review-of-treatment-in-41-patients
#1
Sang-Bok Lee, Kyoung-Suok Cho
OBJECTIVE: The purpose of this study is to compare the efficacy and safety of anterior cervical discectomy and fusion (ACDF) and cervical total disc replacement (CTDR) as revision surgeries for symptomatic adjacent segment degeneration (ASD) in cases with previous ACDF. PATIENTS AND METHODS: Between 2010 and 2014, 41 patients with previous cervical fusion surgery underwent ACDF or CTDR for symptomatic ASD. Twenty-two patients in the ACDF group underwent 26 ACDFs, and 19 patients in the CTDR group underwent 25 arthroplasties for symptomatic ASD...
August 4, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28937936/is-high-t-1-slope-a-significant-risk-factor-for-developing-interlaminar-bony-fusion-after-cervical-laminoplasty-a-retrospective-cohort-study
#2
Takeshi Oichi, Yasushi Oshima, Hiroyuki Oka, Yuki Taniguchi, Hirotaka Chikuda, Yoshitaka Matsubayashi, Katsushi Takeshita, Sakae Tanaka
OBJECTIVE Several investigators have reported the occurrence of interlaminar bony fusion after cervical laminoplasty, which is reportedly associated with reduced postoperative cervical range of motion (ROM). However, to the authors' knowledge, no previous study has investigated the characteristics of patients who were likely to develop interlaminar bony fusion after cervical laminoplasty. Therefore, the objective of this study was to investigate the risk factors for interlaminar bony fusion in patients with cervical spondylotic myelopathy (CSM) following cervical laminoplasty and to investigate the effect of interlaminar bony fusion on surgical outcomes...
September 15, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28937629/tracking-of-maneuvering-complex-extended-object-with-coupled-motion-kinematics-and-extension-dynamics-using-range-extent-measurements
#3
Lifan Sun, Baofeng Ji, Jian Lan, Zishu He, Jiexin Pu
The key to successful maneuvering complex extended object tracking (MCEOT) using range extent measurements provided by high resolution sensors lies in accurate and effective modeling of both the extension dynamics and the centroid kinematics. During object maneuvers, the extension dynamics of an object with a complex shape is highly coupled with the centroid kinematics. However, this difficult but important problem is rarely considered and solved explicitly. In view of this, this paper proposes a general approach to modeling a maneuvering complex extended object based on Minkowski sum, so that the coupled turn maneuvers in both the centroid states and extensions can be described accurately...
September 22, 2017: Sensors
https://www.readbyqxmd.com/read/28937464/comparison-of-clinical-outcomes-after-anterior-cervical-discectomy-and-fusion-versus-cervical-total-disk-replacement-in-patients-with-modic-2-changes-on-mri
#4
Jia Li, Di Zhang, Wenyuan Ding, Yingze Zhang, Yong Shen
STUDY DESIGN: A retrospective investigation. OBJECTIVE: The aim of this research is to compare the clinical and radiologic outcomes of patients with Modic-2 changes who underwent anterior cervical discectomy and fusion (ACDF) or cervical total disk replacement (TDR) in single level. SUMMARY OF BACKGROUND DATA: There were few studies focused on the clinical and radiologic outcomes of patients with Modic-2 changes who underwent ACDF or cervical TDR in single level...
October 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28937224/thermocapillary-droplet-actuation-effect-of-solid-structure-and-wettability
#5
George Karapetsas, Nikolaos T Chamakos, Athanasios G Papathanasiou
We examine the thermocapillary-driven flow of a droplet on a non-uniformly heated patterned surface. Using a sharp-interface scheme, capable of efficiently modelling the flow over complex surfaces, we perform 2D and 3D finite element simulations for a wide range of substrate wettabilities, i.e. from hydrophilic to super-hydrophobic surfaces. Our results demonstrate that the contact angle hysteresis, due to the presence of the solid structures, is responsible for the appearance of a critical thermal gradient beyond which droplet migration is possible that has been reported by experimental observations...
September 22, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28936610/tight-fitting-radial-head-prosthesis-does-stem-size-help-prevent-painful-loosening
#6
Pierre Laumonerie, Nicolas Reina, Claudia Gutierrez, Stephanie Delclaux, Meagan E Tibbo, Nicolas Bonnevialle, Pierre Mansat
INTRODUCTION: The most common reason for removal of well-fixed radial head prostheses is painful loosening. We hypothesised that short-stemmed prostheses, used for radial head arthroplasty, are not associated with an increased risk of implant loosening. METHODS: From 2002 to 2014, 65 patients were enrolled in a retrospective single-centre study. The radial head prostheses were classified as having either a long (30-mm) or short (16- to 22-mm) stem. The long-stemmed implants comprised 30 GUEPAR® DePuy Synthes (West Chester, PA, USA) and 20 Evolutive® Aston Medical (Saint-Etienne, France) devices; the short-stemmed implants comprised nine RECON and six STANDARD rHead® SBI-Stryker (Morrisville, PA, USA) devices...
September 21, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28935593/factors-affecting-peri-implant-fracture-following-locking-plate-for-osteoporotic-distal-femur-fractures
#7
Ki-Chul Park, Seung-Jae Lim, Young Sik Song, Kyu-Tae Hwang
INTRODUCTION: The purpose of this study is to evaluate the outcomes and to analyze the risk factors for the occurrence of peri-implant fracture after treatment of osteoporotic distal femoral fracturesusing a locking plate. HYPOTHESIS: Risk factors affecting peri-implant fracture exist after locking plate fixation in osteoporotic distal femur fracture. MATERIALS AND METHODS: Eighty nine(88 patients) with osteoporotic distal femoral fractures were evaluated between January2006 and January2014...
September 18, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28935340/risk-factors-outcomes-and-timing-of-manipulation-under-anesthesia-after-total-knee-arthroplasty
#8
Erik T Newman, Thomas A Herschmiller, David E Attarian, Thomas P Vail, Michael P Bolognesi, Samuel S Wellman
BACKGROUND: Knee stiffness requiring manipulation under anesthesia (MUA) is an undesirable outcome following total knee arthroplasty (TKA), but risk factors for, and optimal timing of, MUA remain unclear. METHODS: Primary TKAs performed at a single center were retrospectively reviewed. Clinical variables were compared between patients who underwent MUA and those who did not; variables that differed were utilized to identify an appropriately matched control group of non-MUA patients...
August 10, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28933605/early-active-rehabilitation-after-arthroscopic-rotator-cuff-repair-a-prospective-randomized-pilot-study
#9
Rudolf Raschhofer, Nikos Poulios, Wolfgang Schimetta, Rüdiger Kisling, Christian Mittermaier
OBJECTIVE: To compare two different rehabilitation strategies, primary passive motion versus early isometric loading of the rotator cuff. DESIGN: Prospective randomized controlled observer-blinded pilot study. SETTING: Institute of Physical Medicine and Rehabilitation. SUBJECTS: Thirty patients after rotator cuff surgery. INTERVENTION: All participants were randomly assigned to one of the two outpatient treatment groups: primary passive motion versus early isometric loading of the rotator cuff...
October 2017: Clinical Rehabilitation
https://www.readbyqxmd.com/read/28933513/effect-of-transcutaneous-electrical-nerve-stimulation-for-pain-control-after-total-knee-arthroplasty-a-systematic-review-and-meta-analysis
#10
Yongjun Zhu, Yuxing Feng, Lihua Peng
INTRODUCTION: Transcutaneous electrical nerve stimulation is a possible adjunctive therapy to pharmacological treatment for controlling pain after total knee arthroplasty. However, the results are controversial. A systematic review and meta-analysis was conducted to explore the effect of transcutaneous electrical nerve stimulation on patients with total knee arthroplasty. METHODS: PubMed, Embase, Web of Science, EBSCO, and Cochrane Library databases were searched systematically...
September 21, 2017: Journal of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28933330/-short-term-results-of-surgical-treatment-of-patients-with-hallux-rigidus
#11
M Dygrýnová, M Uvízl, J Gallo
PURPOSE OF THE STUDY Hallux rigidus is common and degenerative arthritis of the first metatarsophalangeal joint. The aim of this study was to assess the results of cheilectomy and total joint replacement (TJR) in patients with hallux rigidus. Minimum duration of followup was 18 months. MATERIAL AND METHODS The study included fifty-nine patients who underwent surgery at our Department due to hallux rigidus between January 2013 and December 2014. Thirty-seven patients underwent cheilectomy and twenty-two patients had total joint arthroplasty using METIS®...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28932876/effective-patellofemoral-joint-stabilization-and-low-complication-rates-using-a-hardware-free-mpfl-reconstruction-technique-with-an-intra-operative-adjustment-of-the-graft-tension
#12
Lars V von Engelhardt, Torsten Fuchs, Pia Weskamp, Joerg Jerosch
PURPOSE: Even if medial patellofemoral ligament (MPFL) reconstruction is a proven method, complications such as implant loosening, patella fractures, recurrent luxations, knee pain or knee stiffness are frequently described. Besides a correct tunnel positioning and implant-specific complications, this might be caused by difficulties with an appropriate graft tensioning. The study presented here is a necessary first step in exploring our technique of a double-limbed, hardware-free MPFL reconstruction, which provides another way to test and adjust the graft tension before permanent fastening...
September 20, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28932752/local-rhbmp-12-on-an-absorbable-collagen-sponge-as-an-adjuvant-therapy-for-rotator-cuff-repair-a-phase-1-randomized-standard-of-care-control-multicenter-study-part-2-a-pilot-study-of-functional-recovery-and-structural-outcomes
#13
Junji Ide, Yu Mochizuki, Arthur van Noort, Hiroshi Ochi, Sudhakar Sridharan, Eiji Itoi, Stefan Greiner
BACKGROUND: The high failure rate of rotator cuff repairs requires the development of methods to enhance healing at the tendon-bone junction of the repair site. PURPOSE: To assess functional recovery and structural outcomes in detail after implanting recombinant human bone morphogenetic protein-12 (rhBMP-12)/absorbable collagen sponge (ACS) as adjuvant treatment during open rotator cuff repair in patients over a 1-year postoperative follow-up. STUDY DESIGN: Randomized controlled trial; Level of evidence, 2...
September 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28932751/return-to-sports-and-recurrences-after-arthroscopic-anterior-shoulder-stabilization-in-martial-arts-athletes
#14
Maximiliano Ranalletta, Luciano A Rossi, Adrian Sirio, Fernando Diaz Dilernia, Agustin Bertona, Gastón D Maignon, Santiago L Bongiovanni
BACKGROUND: The high demands to the glenohumeral joint and the violent shoulder blows experienced during martial arts (MA) could compromise return to sports and increase the recurrence rate after arthroscopic stabilization for anterior shoulder instability in these athletes. PURPOSE: To report the functional outcomes, return to sports, and recurrences in a series of MA athletes with anterior shoulder instability treated with arthroscopic stabilization with suture anchors...
September 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28932491/osteophytes-removal-in-patella-versus-lateral-facetectomy-of-the-patella-in-patella-retaining-total-knee-arthroplasty
#15
Mehdi Moghtadaei, Mohammad Reza Miniator Sajadi, Hossein Farahini, Ali Yeganeh
BACKGROUND: In this study, the results of the partial lateral facetectomy of the patella to better patellofemoral motion and congruence are compared with the results of the osteophyte removal of the patella and neurectomy only in total knee arthroplasty (TKA). METHODS: Data from 55 patients undergoing TKA with osteophytes removal of the patella and neurectomy only, and those undergoing osteophytes removal of the patella and neurectomy and partial lateral facetectomy were reviewed retrospectively...
March 2017: Interventional Medicine & Applied Science
https://www.readbyqxmd.com/read/28932282/management-of-post-traumatic-stiffness-of-the-shoulder-following-upper-limb-trauma-with-manipulation-under-anaesthetic
#16
Sarah T Lancaster, Thomas N Grove, David A Woods
BACKGROUND: A proportion of patients who sustain upper limb fractures develop post-traumatic stiffness (PTS), which may progress in a similar way to primary frozen shoulder (PFS). We have had success in treating PFS with manipulation under anaesthetic (MUA) and therefore treated PTS using MUA. Oxford Shoulder Scores (OSS), range of motion (ROM) data pre- and post-MUA, and the need for repeat procedure were compared. METHODS: Sixty-four patients with PTS following an upper limb fracture, unresponsive to conservative measures, were seen between 1 January 1999 and 1 November 2015...
October 2017: Shoulder & Elbow
https://www.readbyqxmd.com/read/28932006/a-newly-developed-floor-chair-placed-on-an-office-chair-reduces-lumbar-muscle-fatigue-by-cyclically-changing-its-lumbar-supporting-shape
#17
Tadamitsu Matsuda, Takayuki Koyama, Yasushi Kurihara, Miki Tagami, Yasuaki Kusumoto, Osamu Nitta
[Purpose] This study investigated lumbar muscle fatigue before and after maintaining a seated position for one hour, lumbar and pelvic inclination angle change, in subjects with and without active lumber support. [Subjects and Methods] Fourteen healthy subjects randomized into two groups sat on a floor chair, placed on an office chair, that cyclically changed its lumbar supporting shape to provide active lumbar support (ALS) or no ALS for one hour. Before and after, we measured the frequency of muscle waveforms of the trunk extensor muscles when the subjects lifted an object weighing 10% of their body weight, using both hands while seated...
September 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28931989/effect-of-low-intensity-pulsed-ultrasound-therapy-on-a-rat-knee-joint-contracture-model
#18
Masanori Watanabe, Satoshi Kojima, Masahiro Hoso
[Purpose] Histopathological investigation of the effects of low-intensity pulsed ultrasound (LIPUS) on joint components using a rat knee joint contracture model. [Subjects and Methods] Nineteen, 9-week-old Wistar male rats were divided into a control group (n=6) and an experimental group. Rats in the experimental group underwent cast immobilization of the right rear limb for 8 weeks. They were then randomly divided into a non-treatment group (n=6), which was raised under normal conditions for 4 weeks, and a treatment group (n=7), which underwent LIPUS for 4 weeks...
September 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28931814/optical-trapping-of-otoliths-drives-vestibular-behaviours-in-larval-zebrafish
#19
Itia A Favre-Bulle, Alexander B Stilgoe, Halina Rubinsztein-Dunlop, Ethan K Scott
The vestibular system, which detects gravity and motion, is crucial to survival, but the neural circuits processing vestibular information remain incompletely characterised. In part, this is because the movement needed to stimulate the vestibular system hampers traditional neuroscientific methods. Optical trapping uses focussed light to apply forces to targeted objects, typically ranging from nanometres to a few microns across. In principle, optical trapping of the otoliths (ear stones) could produce fictive vestibular stimuli in a stationary animal...
September 20, 2017: Nature Communications
https://www.readbyqxmd.com/read/28931607/direct-observation-of-conformational-population-shifts-in-crystalline-human-hemoglobin
#20
Naoya Shibayama, Mio Ohki, Jeremy Rh Tame, Sam-Yong Park
Although X-ray crystallography is the most commonly used technique for studying the molecular structure of proteins, it is not generally able to monitor the dynamic changes or global domain motions that often underlie allostery. These motions often prevent crystal growth or reduce crystal order. We have recently discovered a crystal form of human hemoglobin that contains three protein molecules allowed to express a full range of quaternary structures, while maintaining strong X-ray diffraction. Here we use this crystal form to investigate the effects of two allosteric effectors, phosphate and bezafibrate, by tracking the structures and functions of the three hemoglobin molecules following the addition of each effector...
September 20, 2017: Journal of Biological Chemistry
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