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https://www.readbyqxmd.com/read/29353326/radiological-and-functional-outcomes-of-high-grade-spondylolisthesis-treated-by-intrasacral-fixation-dome-resection-and-circumferential-fusion-a-retrospective-series-of-20-consecutive-cases-with-a-minimum-of-2%C3%A2-years-follow-up
#1
E Ferrero, B Ilharreborde, V Mas, C Vidal, A-L Simon, K Mazda
PURPOSE: Major concern during surgery for high-grade spondylolisthesis (HGS) is to reduce lumbosacral kyphosis and restore sagittal alignment. Despite the numerous methods described, lumbosacral fixation in HGS is a challenging technique associated with high complication rate. Few series have described outcomes and most of the results are limited to lumbosacral correction without global sagittal alignment analysis. This study aims at analyzing clinical and radiological outcomes of HGS patients treated with intrasacral rods on full spine radiographs...
January 20, 2018: European Spine Journal
https://www.readbyqxmd.com/read/29353311/effects-of-wrist-tendon-vibration-and-eye-movements-on-manual-aiming
#2
Ann Lavrysen, Oron Levin, Matthieu P Boisgontier, Digby Elliott, Werner F Helsen
In the present study, we investigated whether visual information mediates a proprioceptive illusion effect induced by muscle tendon vibration in manual aiming. Visual information was gradually degraded from a situation in which the targets were present and participants (n = 20; 22.3 ± 2.7 years) were permitted to make saccadic eye movements to designated target positions, to a condition in which the targets were not visible and participants were required to perform cyclical aiming while fixating a point between the two target positions...
January 20, 2018: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/29353123/a-locking-compression-plate-versus-the-gold-standard-non-locking-plate-with-lag-screw-for-first-metatarsophalangeal-fusion-a-biomechanical-comparison
#3
Daniel Mandell, John Karbassi, Hanbing Zhou, Brian Burroughs, Philip Aurigemma, Abhay R Patel
INTRODUCTION: The treatment of end-stage first metatarso-phalangeal joint (MTP) arthritis has been arthrodesis. A dorsal non-locking plate with a lag screw has been the standard traditional fixation method. This study compares the biomechanical strength of a locking compression plate (LCP) with and without internal compression versus this known gold standard. METHODS: In group 1, six matched pairs of cadaver great toes were used to compare the standard non-locking dorsal plate and 3...
November 4, 2017: Foot
https://www.readbyqxmd.com/read/29352856/facial-nerve-paralysis-a-rare-complication-of-open-reduction-of-zygomaticomaxillary-complex-fractures
#4
Padmanidhi Agarwal, Ashi Chug, Shailesh Kumar, Kanav Jain
Facial nerve paralysis is an unusual formidable complication that can manifest after various maxillofacial surgeries, including open reduction of facial trauma. The branches more predisposed to such injury are the zygomatic and marginal mandibular branches. Zygomaticomaxillary complex (ZMC) fractures are frequently encountered in maxillofacial trauma. The facial nerve has not been described as endangered during ZMC surgery. Paralysis of the buccal branch after ZMC repair with delayed onset has been reported only once...
December 28, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29352689/morbidity-and-safety-of-iliac-crest-reference-array-pins-in-navigated-total-hip-arthroplasty-a-prospective-cohort-study
#5
Anton P Lambers, Xiang G Salim, Robert Jennings, Andrew T Bucknill
BACKGROUND: Navigated total hip arthroplasty (THA) can employ intra-osseous pins through a separate incision to secure reference arrays to the iliac crest. This study is the first to investigate the consequences of pin use in THA in vivo. METHODS: A prospective, consecutive series of 43 patients presenting for navigated THA were included. Two temporary 125 × 4 mm Schanz screws were inserted into the iliac crest for the attachment of a reference array. Telephone follow-up occurred at 6 and 12 weeks post-operatively...
December 28, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29352681/no-consensus-for-femoral-head-impaction-technique-in-surgeon-education-materials-from-orthopedic-implant-manufacturers
#6
Brian J McGrory, Eric Ng
BACKGROUND: Prior studies indicate that one factor that may contribute to total hip arthroplasty failure due to mechanically assisted crevice corrosion at the femoral head-trunnion junction is the method of femoral head fixation. METHODS: Up-to-date on-line surgical technique guides describing fixation of the prosthetic femoral head of common implants of the 4 largest manufacturers as well as 2 minor manufacturers were identified. The information given regarding preparation and fixation of the femoral head was evaluated and compared...
December 30, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29352332/effects-of-continuous-or-intermittent-low-magnitude-high-frequency-vibration-on-fracture-healing-in-sheep
#7
Yanhui Li, Guozhao Liu, Jing Yu, Chen Li, Lei Tan, Baohui Hao, Chao Liu, Junhao Lin, Dong Zhu, Xizheng Zhang
PURPOSE: Vibration therapy has been shown to improve fracture healing. In this study, we investigated the effects of continuous or different intermittent vibration regimens on fracture healing in sheep models on the basis of radiographs, mechanical, and biochemical testing. METHODS: The 63 right-hind metatarsals from 63 sheep (12-month-old) were osteotomized; followed by surgical fixation with a steel plate. Two weeks after the surgery, the sheep with right-hind metatarsal fractures were randomly divided into seven groups (n=9/group): control (no vibration treated), continuous vibration (CV), one, three, five, seven and 14-day intermittent vibration (named IV-1, -3, -5, -7, and -14, respectively) groups, which represented a cycle of the successive n-day vibration and successive n-day break...
January 19, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29352163/word-mode-a-crowding-free-reading-protocol-for-individuals-with-macular-disease
#8
Stuart Wallis, Yit Yang, Stephen J Anderson
Central retinal loss through macular disease markedly reduces the ability to read largely because identification of a word using peripheral vision is negatively influenced by nearby text, a phenomenon termed visual crowding. Here, we present a novel peripheral reading protocol, termed Word Mode, that eliminates crowding by presenting each word in isolation but in a position that mimics its natural position in the line of text being read, with each new word elicited using a self-paced button press. We used a gaze-contingent paradigm to simulate a central scotoma in four normally-sighted observers, and measured oral reading speed for text positioned 7...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352153/biology-culture-co-evolution-in-finite-populations
#9
Bart de Boer, Bill Thompson
Language is the result of two concurrent evolutionary processes: biological and cultural inheritance. An influential evolutionary hypothesis known as the moving target problem implies inherent limitations on the interactions between our two inheritance streams that result from a difference in pace: the speed of cultural evolution is thought to rule out cognitive adaptation to culturally evolving aspects of language. We examine this hypothesis formally by casting it as as a problem of adaptation in time-varying environments...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29351575/waterlogging-tolerance-tissue-nitrogen-and-oxygen-transport-in-the-forage-legume-melilotus-siculus-a-comparison-of-nodulated-and-nitrate-fed-plants
#10
Dennis Konnerup, Guillermo Toro, Ole Pedersen, Timothy David Colmer
Background and Aims: Soil waterlogging adversely impacts most plants. Melilotus siculus is a waterlogging-tolerant annual forage legume, but data were lacking for the effects of root-zone hypoxia on nodulated plants reliant on N2 fixation. The aim was to compare the waterlogging tolerance and physiology of M. siculus reliant on N2 fixation or with access to NO3-. Methods: A factorial experiment imposed treatments of water level (drained or waterlogged), rhizobia (nil or inoculated) and mineral N supply (nil or 11 mm NO3-) for 21 d on plants in pots of vermiculite in a glasshouse...
January 17, 2018: Annals of Botany
https://www.readbyqxmd.com/read/29351558/analysis-of-500-anterior-cruciate-ligament-reconstructions-from-a-private-institutional-register
#11
Lauro Augusto Costa, Noel Oizerovici Foni, Eliane Antonioli, Rogério Teixeira de Carvalho, Isabela Dias Paião, Mário Lenza, Mário Ferretti
PURPOSE: The aims of this study are to describe the epidemiological characteristics of anterior cruciate ligament reconstructions in a private hospital in Brazil and to determine trends in medical practice for comparison with previous studies. METHODS: We retrospectively reviewed the anterior cruciate ligament institutional register to obtain data from all patients who underwent primary anterior cruciate ligament reconstruction from July 2014 to June 2016. Descriptive statistics were used to summarize the sample...
2018: PloS One
https://www.readbyqxmd.com/read/29351508/gaze-behavior-of-gymnastics-judges-where-do-experienced-judges-and-gymnasts-look-while-judging
#12
Alexandra Pizzera, Carsten Möller, Henning Plessner
Gymnastics judges and former gymnasts have been shown to be quite accurate in detecting errors and accurately judging performance. PURPOSE: The purpose of the current study was to examine if this superior judging performance is reflected in judges' gaze behavior. METHOD: Thirty-five judges were asked to judge 21 gymnasts who performed a skill on the vault in a video-based test. Classifying 1 sample on 2 different criteria, judging performance and gaze behavior were compared between judges with a higher license level and judges with a lower license level and between judges who were able to perform the skill (specific motor experience [SME]) and those who were not...
January 19, 2018: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/29351352/the-retinal-locus-of-fixation-in-simulations-of-progressing-central-scotomas
#13
Maria J Barraza-Bernal, Katharina Rifai, Siegfried Wahl
Patients with central scotoma use a preferred retinal locus (PRL) of fixation to perform visual tasks. Some of the conditions that cause central scotoma are progressive, and as a consequence, the PRL needs to be adjusted throughout the progression. The present study investigates the peripheral locus of fixation in subjects under a simulation of progressive central scotoma. Five normally sighted subjects participated in the study. A foveally centered mask of varying size was presented to simulate the scotoma...
January 1, 2018: Journal of Vision
https://www.readbyqxmd.com/read/29351268/use-of-different-methods-of-intramedullary-nailing-for-fixation-of-distal-radius-fractures-a-retrospective-analysis-of-clinical-and-radiological-outcomes
#14
Murat Çalbıyık, Deniz Ipek
BACKGROUND We aimed to evaluate the clinical and radiologic outcomes of using Sonoma WRx versus Micronail intramedullary nailing for the fixation of distal radius fractures. MATERIAL AND METHODS A total of 68 patients with primarily extra-articular and simple intra-articular fractures of the distal radius who underwent intramedullary distal radius fixation using Sonoma WRx (n=39) or Micronail (n=29) intramedullary nails were enrolled in the study. The clinical outcome measures included the range of motion (ROM), visual analog scale (VAS), functional outcomes (patient-reported Disabilities of the Arm, Shoulder and Hand [DASH] score and clinician-based Gartland-Werley score), radiographic scores (Stewart score), and parameters related to the quality of radiographic reduction and complications (radial inclination, volar tilt, radial height, and radio-ulnar variance)...
January 19, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29350602/a-novel-approach-to-32-channel-peripheral-nervous-system-myelin-imaging-in-vivo-with-single-axon-resolution
#15
Joey Grochmal, Wulin Teo, Hardeep Gambhir, Ranjan Kumar, Jo Anne Stratton, Raveena Dhaliwal, Craig Brideau, Jeff Biernaskie, Peter K Stys, Rajiv Midha
OBJECTIVE Intravital spectral imaging of the large, deeply situated nerves in the rat peripheral nervous system (PNS) has not been well described. Here, the authors have developed a highly stable platform for performing imaging of the tibial nerve in live rodents, thus allowing the capture of high-resolution, high-magnification spectral images requiring long acquisition times. By further exploiting the qualities of the topically applied myelin dye Nile red, this technique is capable of visualizing the detailed microenvironment of peripheral nerve demyelination injury and recovery, while allowing us to obtain images of exogenous Schwann cell myelination in a living animal...
January 19, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29350412/surgical-repair-of-propagating-condylar-fractures-of-the-third-metacarpal-metatarsal-bones-with-cortical-screws-placed-in-lag-fashion-in-26-racehorses-2007-2015
#16
N Moulin, I François, N Coté, C Alford, O Cleary, M R Desjardins
BACKGROUND: Despite the recommendation of plate fixation for propagating condylar fractures of the third metacarpal (McIII) or third metatarsal bone (MtIII), lag screw fixation can be a viable surgical option. OBJECTIVES: To evaluate short-term outcome and long-term racing performance of horses that underwent lag screw fixation of long condylar fractures of the McIII/MtIII. STUDY DESIGN: Retrospective case series. METHODS: Medical records, post-surgical racing performance and outcome of 26 horses with propagating fractures of the medial and/or lateral condyle of McIII/MtIII were reviewed...
January 19, 2018: Equine Veterinary Journal
https://www.readbyqxmd.com/read/29350089/a-comparative-analysis-of-internal-bone-remodelling-concepts-in-a-novel-implant-for-direct-skeletal-attachment-of-limb-prosthesis-evaluation-a-finite-element-analysis
#17
Piotr Prochor, Eugeniusz Sajewicz
Nowadays, numerous internal bone remodelling concepts are under development, in order to estimate long-term functionality of implants by evaluating the intensity of stress-shielding effect. This effect is also analysed for the implants for direct skeletal attachment, considered as a better exoprosthesis fixation method than prosthetic sockets. Most of bone remodelling approaches are based on basic concepts, differing with certain assumptions, which may affect the accuracy of the results. This article compares commonly used internal bone remodelling concepts and evaluates the functionality of the proposed Limb Prosthesis Osseointegrated Fixation System for direct skeletal attachment of limb prosthesis in comparison with two currently available implants: the Intraosseous Transcutaneous Amputation Prosthesis and the Osseointegrated Prostheses for the Rehabilitation of Amputees...
January 1, 2018: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29350013/-closed-reduction-and-percutaneous-double-k-wires-internal-fixation-for-the-treatment-of-multisegmental-fracture-of-humeral-shaft
#18
Yong Sun, Hong-Sheng Shang, Wei-Hong Zhang, Jing-Ti Jing
OBJECTIVE: To observe the clinical effects of closed reduction and percutaneous double K-wires internal fixation in treating multisegmental fracture of humeral shaft. METHODS: From January 2009 to April 2015, 27 patients with multisegmental fracture of humeral shaft were treated with closed reduction and percutaneous double K-wires internal fixation, including 10 males and 17 females, ranging in age from 26 to 81 years with an average of 52 years;the disease course ranged from 2 hours to 6 days with an average of 1...
February 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29350012/-application-of-debridement-and-bone-autografting-combined-with-proximal-femoral-anatomical-plates-for-benign-tumor-in-proximal-femur
#19
Ye Tian, Long-Gang Chen, Bin Shi, Nan Zhang, Qin Fu
OBJECTIVE: To explore the clinical effects of debridement and bone autografting combined with proximal femoral anatomical plate in treating benign tumor in proximal femur. METHODS: From January 2010 to October 2014, 30 patients with benign tumor in proximal femur were treated with debridement, autogenic ilium, autogenic ilium and allogeneic bone implant, and anatomic plate fixation. Among them, there were 13 males and 17 females aged from 12 to 68 years old with an average of 42 years old...
February 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29350011/-treatment-of-ossification-of-ligamentum-flavum-complicated-with-lumbar-spinal-stenosis
#20
Xu Lan, Jie Gao, Jian-Zhong Xu, Xue-Mei Liu
OBJECTIVE: To investigate the imaging characteristic and operation outcome of ossification of ligamentum flavum with lumbar spinal stenosis. METHODS: January 2013 to January 2016, 9 patients with ossification of ligamentum flavum with lumbar spinal stenosis were treated, included 5 males and 4 females, aged from 51 to 63 years old with an average of 57 years old. All patients complained intermittent claudication and radiating pain at lower limb. The pathologic change regions examined by CT or MRI were as follows:2 cases in L₄,₅ and L₅S₁, 5 in L̀,̀, and 2 in L₅S₁...
February 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
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