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https://www.readbyqxmd.com/read/28324822/outcome-evaluation-of-minimally-invasive-surgery-versus-extensile-lateral-approach-in-management-of-displaced-intra-articular-calcaneal-fractures-a-randomised-control-trial
#1
Ankit Khurana, Mandeep S Dhillon, Sharad Prabhakar, Rakesh John
BACKGROUND: Minimally invasive surgery has a significant and evolving role in the treatment of DIACFs, but there is limited literature on this topic. OBJECTIVES: To compare the clinico-radiological outcomes of DIACFs fixed with MIS technique with ORIF. METHODS: This randomised control trial (RCT) included 21 closed Sanders type 2 and 3 DIACFs which were selected from 70 who presented. Extensile lateral approach was used in the ORIF group; while MIS techniques included either percutaneous reduction or small incisions with indirect fragment manipulation...
February 20, 2017: Foot
https://www.readbyqxmd.com/read/28323717/treatment-of-lumbar-split-fracture-dislocation-with-short-segment-or-long-segment-posterior-fixation-and-anterior-fusion
#2
Fei Chen, Yijun Kang, Haisheng Li, Guohua Lv, Chang Lu, Jing Li, Bing Wang, Weihua Chen, Zhehao Dai
STUDY DESIGN: Retrospective analysis of 16 patients. SUMMARY OF BACKGROUND DATA: The lumbar split fracture-dislocation is a rare but severe injury, which is type C1.2.1 fracture in the Association for the Study of Internal Fixation spine fracture classification. The axial compressive and torsional force shattered the vertebral body into 2 halves and displaced them rotationally. This kind of fracture is so highly unstable that the treatment is very challenging. PURPOSE: The purpose of this study was to report and compare on clinical outcome and complications of patients with lumbar split fracture-dislocation which had been treated either short-segment or long-segment posterior fixation and anterior fusion...
April 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28323710/does-sagittal-spinopelvic-configuration-influence-vertebral-fracture-type-or-localization-in-trauma-patients-a-retrospective-radiologic-analysis
#3
Samy Bouaicha, Marc Cunier, Max J Scheyerer, Guido A Wanner, Hans-Peter Simmen, Clément M L Werner
STUDY DESIGN: Retrospective data analysis. OBJECTIVE: The aim of this study was to analyze correlations between spinopelvic configuration and fracture pattern or location in traumatic vertebral fractures. SUMMARY OF BACKGROUND DATA: The spinopelvic configuration represented by the pelvic incidence (PI) angle showed to have a strong correlation with the occurrence of degenerative diseases of the thoracolumbar spine. No data are available on whether there is an influence of the PI angle on traumatic vertebral lesions as well...
April 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28319490/position-between-trunk-and-pelvis-during-gait-depending-on-the-gross-motor-function-classification-system
#4
Jose Manuel Sanz-Mengibar, Natalie Altschuck, Paloma Sanchez-de-Muniain, Christian Bauer, Fernando Santonja-Medina
PURPOSE: To understand whether there is a trunk postural control threshold in the sagittal plane for the transition between the Gross Motor Function Classification System (GMFCS) levels measured with 3-dimensional gait analysis. METHOD: Kinematics from 97 children with spastic bilateral cerebral palsy from spine angles according to Plug-In Gait model (Vicon) were plotted relative to their GMFCS level. RESULTS: Only average and minimum values of the lumbar spine segment correlated with GMFCS levels...
March 17, 2017: Pediatric Physical Therapy
https://www.readbyqxmd.com/read/28303380/nutritional-and-functional-factors-as-prognostic-of-surgical-cancer-patients
#5
Jéssica Härter, Silvana Paiva Orlandi, Maria Cristina Gonzalez
PURPOSE: We evaluated phase angle, sarcopenia, and handgrip strength as prognostic factors of postoperative morbimortality in patients with cancer. METHODOLOGY: We conducted a prospective study with 60 oncology patients admitted for elective surgery between November 2015 and May 2016. We calculated the standardized phase angle (SPA) and the skeletal mass index of the subjects based on their bioelectrical impedance tests. Handgrip strength (HGS) was measured using a hydraulic dynamometer...
March 16, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28302178/laser-peripheral-iridotomy-versus-laser-peripheral-iridotomy-plus-laser-peripheral-iridoplasty-in-the-treatment-of-multi-mechanism-angle-closure-study-protocol-for-a-randomized-controlled-trial
#6
Shida Chen, Jianhua Lv, Sujie Fan, Hong Zhang, Lin Xie, Ling Xu, Bing Jiang, Huipin Yuan, Yuanbo Liang, Shuning Li, Pingyan Chen, Xiulan Zhang, Ningli Wang
BACKGROUND: China has the largest burden of primary angle-closure glaucoma (PACG) worldwide. The mechanism of the angle closure is complex and includes pupillary block and non-pupillary block. Currently, opinion is that laser peripheral iridotomy (LPI) alone is not sufficient to prevent disease progression. Laser peripheral iridoplasty (LPIP) is an alternative and effective way of widening the angle recess in eyes that are affected by primary angle closure (PAC). However, it is not known if greater benefit would be achieved using LPI plus LPIP for PAC with multiple mechanisms (MAC)...
March 17, 2017: Trials
https://www.readbyqxmd.com/read/28299327/minimum-lateral-bone-coverage-required-for-securing-fixation-of-cementless-acetabular-components-in-hip-dysplasia
#7
Masanori Fujii, Yasuharu Nakashima, Tetsuro Nakamura, Yoshihiro Ito, Toshihiko Hara
Objectives. To determine the minimum lateral bone coverage required for securing stable fixation of the porous-coated acetabular components (cups) in hip dysplasia. Methods. In total, 215 primary total hip arthroplasties in 199 patients were reviewed. The average follow-up period was 49 months (range: 24-77 months). The lateral bone coverage of the cups was assessed by determining the cup center-edge (cup-CE) angle and the bone coverage index (BCI) from anteroposterior pelvic radiographs. Further, cup fixation was determined using the modified DeLee and Charnley classification system...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28296420/conformational-populations-of-%C3%AE-1%C3%A2-4-o-glycosidic-linkages-using-redundant-nmr-j-couplings-and-circular-statistics
#8
Wenhui Zhang, Toby Turney, Reagan Meredith, Qingfeng Pan, Luke Sernau, Xiaocong Wang, Xiaosong Hu, Robert J Woods, Ian Carmichael, Anthony Stephen Serianni
Twelve disaccharides containing β-(1→4) linkages and displaying systematic structural variations in the vicinity of these linkages were selectively labeled with 13C to facilitate measurements of multiple NMR spin-spin (scalar; J) coupling constants (JCH and JCC values) across their O-glycosidic linkages. Ensembles of spin-couplings (2JCOC, 3JCOCH, 3JCOCC) sensitive to the two linkage torsion angles, phi (φ) and psi (ψ), were analyzed using parameterized equations obtained from density functional theory (DFT) calculations, Fredholm theory, and circular statistics to calculate experiment-based rotamer populations for φ and ψ in each disaccharide...
March 15, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28291569/influence-of-third-molars-in-mandibular-fractures-part-1-mandibular-angle-a-meta-analysis
#9
REVIEW
A C V Armond, C C Martins, J C R Glória, E L Galvão, C R R Dos Santos, S G M Falci
The aim of this systematic review was to investigate the influence of the presence and position of mandibular third molars on angle fractures. An electronic search was conducted in the PubMed, Scopus, Web of Science, Cochrane Library, and VHL databases, through January 2016. The eligibility criteria included observational studies. The search strategy resulted in 704 articles. Following the selection process, 35 studies were included in the systematic review and 28 in the meta-analysis. Twenty studies presented a score of ≤6 stars in the Newcastle-Ottawa scale assessment, indicating a risk of bias in the analysis...
March 10, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28281671/visualizing-adsorption-of-cyanophage-p-ssp7-onto-marine-prochlorococcus
#10
Kazuyoshi Murata, Qinfen Zhang, Jesús Gerardo Galaz-Montoya, Caroline Fu, Maureen L Coleman, Marcia S Osburne, Michael F Schmid, Matthew B Sullivan, Sallie W Chisholm, Wah Chiu
Marine cyanobacteria perform roughly a quarter of global carbon fixation, and cyanophages that infect them liberate some of this carbon during infection and cell lysis. Studies of the cyanobacterium Prochlorococcus MED4 and its associated cyanophage P-SSP7 have revealed complex gene expression dynamics once infection has begun, but the initial cyanophage-host interactions remain poorly understood. Here, we used single particle cryo-electron tomography (cryo-ET) to investigate cyanophage-host interactions in this model system, based on 170 cyanophage-to-host adsorption events...
March 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28280526/protein-structure-classification-and-loop-modeling-using-multiple-ramachandran-distributions
#11
Seyed Morteza Najibi, Mehdi Maadooliat, Lan Zhou, Jianhua Z Huang, Xin Gao
Recently, the study of protein structures using angular representations has attracted much attention among structural biologists. The main challenge is how to efficiently model the continuous conformational space of the protein structures based on the differences and similarities between different Ramachandran plots. Despite the presence of statistical methods for modeling angular data of proteins, there is still a substantial need for more sophisticated and faster statistical tools to model the large-scale circular datasets...
2017: Computational and Structural Biotechnology Journal
https://www.readbyqxmd.com/read/28279882/detection-of-an-invisible-needle-in-ultrasound-using-a-probabilistic-svm-and-time-domain-features
#12
Parmida Beigi, Robert Rohling, Tim Salcudean, Victoria A Lessoway, Gary C Ng
We propose a novel learning-based approach to detect an imperceptible hand-held needle in ultrasound images using the natural tremor motion. The minute tremor induced on the needle however is also transferred to the tissue in contact with the needle, making the accurate needle detection a challenging task. The proposed learning-based framework is based on temporal analysis of the phase variations of pixels to classify them according to the motion characteristics. In addition to the classification, we also obtain a probability map of the segmented pixels by cross-validation...
February 16, 2017: Ultrasonics
https://www.readbyqxmd.com/read/28276651/realignment-surgery-for-malunited-ankle-fracture
#13
Chang-Jun Guo, Xing-Cheng Li, Mu Hu, Yang Xu, Xiang-Yang Xu
OBJECTIVE: To investigate the characteristics and the results of realignment surgery for the treatment of malunited ankle fracture. METHODS: Thirty-three patients with malunited fractures of the ankle who underwent reconstructive surgery at our hospital from January 2010 to January 2014 were reviewed. The tibial anterior surface angle (TAS), the tibiotalar tilt angle (TTA), the malleolar angle (MA), and the tibial lateral surface angle (TLS) were measured. Clinical assessment was performed with use of the American Orthopaedic Foot and Ankle Society (AOFAS) scale and visual analogue scale (VAS) scores, and the osteoarthritis stage was determined radiographically with the modified Takakura classification system...
March 9, 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28271890/a-comparison-of-implicit-and-explicit-solvation-models-for-iota-cyclodextrin-conformation-analysis-from-replica-exchange-molecular-dynamics
#14
Wasinee Khuntawee, Manaschai Kunaseth, Chompoonut Rungnim, Suradej Intagorn, Peter Wolschann, Nawee Kungwan, Thanyada Rungrotmongkol, Supot Hannongbua
Large ring cyclodextrins have become increasingly important for drug delivery applications. In this work, we have performed replica-exchange molecular dynamics simulations using both implicit and explicit water solvation models to study the conformational diversity of iota-cyclodextrin containing 14 α-1,4 glycosidic linked D-glucopyranose units (CD14). The new quantifiable calculation methods are proposed to analyze the openness, bending, and twisted conformation of CD14 in terms of circularity, biplanar angle, and one-directional conformation (ODC)...
March 8, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/28269683/classification-of-squat-quality-with-inertial-measurement-units-in-the-single-leg-squat-mobility-test
#15
Rezvan Kianifar, Alex Lee, Sachin Raina, Dana Kulic
Many assessment and diagnosis protocols in rehabilitation, orthopedic surgery and sports medicine rely on mobility tests like the Single Leg Squat (SLS). In this study, a set of three Inertial Measurement Units (IMUs) were used to estimate the joint pose during SLS and to classify the SLS as poor, moderate or good. An Extended Kalman Filter pose estimation method was used to estimate kinematic joint variables, and time domain features were generated based on these variables. The most important features were then selected and used to train Support Vector Machine (SVM), Linear Multinomial Logistic Regression, and Decision Tree classifiers...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269656/automated-classification-of-pathological-gait-after-stroke-using-ubiquitous-sensing-technology
#16
Elham Dolatabadi, Babak Taati, Alex Mihailidis
This study uses machine learning methods to distinguish between healthy and pathological gait. Examples of multi-dimensional pathological and normal gait sequences were collected from post-stroke and healthy individuals in a real clinical setting and with two Kinect sensors. The trajectories of rotational angle and global velocity of selected body joints (hips, spine, shoulders, neck, knees and ankles) over time formed the gait sequences. The combination of k nearest neighbor (kNN) and dynamic time warping (DTW) was used for classification...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268979/segmentation-of-human-upper-body-movement-using-multiple-imu-sensors
#17
Takashi Aoki, Jonathan Feng-Shun Lin, Dana Kulic, Gentiane Venture
This paper proposes an approach for the segmentation of human body movements measured by inertial measurement unit sensors. Using the angular velocity and linear acceleration measurements directly, without converting to joint angles, we perform segmentation by formulating the problem as a classification problem, and training a classifier to differentiate between motion end-point and within-motion points. The proposed approach is validated with experiments measuring the upper body movement during reaching tasks, demonstrating classification accuracy of over 85...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268567/toward-a-severity-index-for-rop-an-unsupervised-approach
#18
Peng Tian, Esra Ataer-Cansizoglu, Jayashree Kalpathy-Cramer, Susan Ostmo, Karyn Jonas, R V Paul Chan, J Peter Campbell, Michael F Chiang, Deniz Erdogmus
Retinopathy of prematurity (ROP) is a disease affecting low birth-weight infants and is the major cause of childhood blindness. Although accurate diagnosis is important, there is a high variability among expert decisions mostly due to subjective thresholds. Existing work focused on automated diagnosis of ROP. In this study, we construct a continuous severity index as an alternative to discrete classification. We follow an unsupervised approach by performing nonlinear dimensionality reduction. Instead of extracting several statistics of image features, each image is represented by the probability distribution of its features...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268561/automatic-anterior-chamber-angle-structure-segmentation-in-as-oct-image-based-on-label-transfer
#19
Huazhu Fu, Yanwu Xu, Damon Wing Kee Wong, Jiang Liu, Mani Baskaran, Shamira A Perera, Tin Aung
The anterior chamber angle (ACA) plays an important role for diagnosis and treatment of angle-closure glaucoma. Anterior Segment Optical Coherence Tomography (AS-OCT) imaging is qualitative and quantitative assessment for the ACA structure. In this paper, we propose a novel fully automatic segmentation method for anterior chamber angle structure in AS-OCT. In our method, the initial labels are obtained by using label transfer from the AS-OCT reference dataset. Then, these labels are refined and utilized as the landmarks to support the structure segmentation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268460/autonomous-vision-guided-approach-for-the-analysis-and-grading-of-vertical-suspension-tests-during-hammersmith-infant-neurological-examination-hine
#20
Prasenjit Dey, Debi Prosad Dogra, Partha Pratim Roy, Harish Bhaskar
Computer vision assisted diagnostic systems are gaining popularity in different healthcare applications. This paper presents a video analysis and pattern recognition framework for the automatic grading of vertical suspension tests on infants during the Hammersmith Infant Neurological Examination (HINE). The proposed vision-guided pipeline applies a color-based skin region segmentation procedure followed by the localization of body parts before feature extraction and classification. After constrained localization of lower body parts, a stick-diagram representation is used for extracting novel features that correspond to the motion dynamic characteristics of the infant's leg movements during HINE...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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