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https://www.readbyqxmd.com/read/29333959/a-noninvasive-body-setup-method-for-radiotherapy-by-using-a-multimodal-image-fusion-technique
#1
Jie Zhang, Ying Chen, Yunxia Chen, Chenchen Wang, Jing Cai, Kaiyue Chu, Jianhua Jin, Yun Ge, Xiaolin Huang, Yue Guan, Weifeng Li
PURPOSE: To minimize the mismatch error between patient surface and immobilization system for tumor location by a noninvasive patient setup method. MATERIALS AND METHODS: The method, based on a point set registration, proposes a shift for patient positioning by integrating information of the computed tomography scans and that of optical surface landmarks. An evaluation of the method included 3 areas: (1) a validation on a phantom by estimating 100 known mismatch errors between patient surface and immobilization system...
December 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/29333900/stability-of-two-anterior-fixations-for-three-column-injury-in-the-lower-cervical-spine-biomechanical-evaluation-of-anterior-pedicle-screw-plate-fixation
#2
Hai-Hao Wu, Tao Tang, Xiao Yu, Qing-Jiang Pang
Objectives This study aimed to evaluate the stability of anterior pedicle screw-plate (APSP) fixation and anterior vertebral body screw-plate (AVBSP) fixation for three-column injury in the lower cervical spine. Methods Six fresh-frozen human cadaveric specimens of the lower cervical spine were prepared. After measurement of the range of motion (ROM) in the intact state, the specimens were prepared as three-column injury models. The models were stabilized by AVBSP or APSP fixation. The ROM of the models in the two states was measured...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29331939/volumetric-muscle-loss-injury-repair-using-in-situ-fibrin-gel-cast-seeded-with-muscle-derived-stem-cells-mdscs
#3
Nadine Matthias, Samuel D Hunt, Jianbo Wu, Jonathan Lo, Laura A Smith Callahan, Yong Li, Johnny Huard, Radbod Darabi
Volumetric muscle defect, caused by trauma or combat injuries, is a major health concern leading to severe morbidity. It is characterized by partial or full thickness loss of muscle and its bio-scaffold, resulting in extensive fibrosis and scar formation. Therefore, the ideal therapeutic option is to use stem cells combined with bio-scaffolds to restore muscle. For this purpose, muscle-derived stem cells (MDSCs) are a great candidate due to their unique multi-lineage differentiation potential. In this study, we evaluated the regeneration potential of MDSCs for muscle loss repair using a novel in situ fibrin gel casting...
January 9, 2018: Stem Cell Research
https://www.readbyqxmd.com/read/29330835/international-guidelines-for-groin-hernia-management
#4
(no author information available yet)
INTRODUCTION: Worldwide, more than 20 million patients undergo groin hernia repair annually. The many different approaches, treatment indications and a significant array of techniques for groin hernia repair warrant guidelines to standardize care, minimize complications, and improve results. The main goal of these guidelines is to improve patient outcomes, specifically to decrease recurrence rates and reduce chronic pain, the most frequent problems following groin hernia repair. They have been endorsed by all five continental hernia societies, the International Endo Hernia Society and the European Association for Endoscopic Surgery...
January 12, 2018: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/29330345/a-computational-simulation-study-to-determine-the-biomechanical-influence-of-posterior-condylar-offset-and-tibial-slope-in-cruciate-retaining-total-knee-arthroplasty
#5
K-T Kang, Y-G Koh, J Son, O-R Kwon, J-S Lee, S K Kwon
OBJECTIVES: Posterior condylar offset (PCO) and posterior tibial slope (PTS) are critical factors in total knee arthroplasty (TKA). A computational simulation was performed to evaluate the biomechanical effect of PCO and PTS on cruciate retaining TKA. METHODS: We generated a subject-specific computational model followed by the development of ± 1 mm, ± 2 mm and ± 3 mm PCO models in the posterior direction, and -3°, 0°, 3° and 6° PTS models with each of the PCO models...
January 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/29330190/influence-of-pig-farming-on-the-human-s-nasal-microbiota-the-key-role-of-the-airborne-microbial-communities
#6
Julia G Kraemer, Alban Ramette, Suzanne Aebi, Anne Oppliger, Markus Hilty
It has been hypothesized that the environment can influence the composition of the nasal microbiota. However, the direct influence of pig farming on the anterior and posterior nasal microbiota is unknown. Using a cross-sectional design, pig farms (n=28) were visited in 2014-2015 and nasal swabs from 43 pig farmers and 56 pigs as well as 27 air samples taken in the vicinity of pig enclosure were collected. As controls, nasal swabs from 17 cow farmers and 26 non-animal exposed individuals were also included. Analyses of the microbiota were performed based on 16S rRNA amplicon sequencing and the DADA2 pipeline to define sequence variants (SVs)...
January 12, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29328985/standing-on-a-sliding-board-affects-generation-of-anticipatory-and-compensatory-postural-adjustments
#7
Bing Chen, Yun-Ju Lee, Alexander S Aruin
Postural control is compromised in the presence of body instability. We studied anticipatory and compensatory postural adjustments people use to maintain balance while standing on an unstable surface and performing voluntary arm movements. Nine healthy participants stood on a sliding board (that was either locked and as such motionless or unlocked and as such free to move in the anterior-posterior direction) and performed fast bilateral arms flexion. Arm acceleration, bilateral electromyographic activity (EMG) of the trunk and lower extremity muscles and center of pressure (COP) displacements were recorded and analyzed within the intervals typical for the anticipatory (APAs) and compensatory (CPAs) postural adjustments...
December 28, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29327997/mechanical-thrombectomy-in-basilar-artery-occlusion-influence-of-reperfusion-on-clinical-outcome-and-impact-of-the-first-line-strategy-adapt-vs-stent-retriever
#8
Benjamin Gory, Mikael Mazighi, Raphael Blanc, Julien Labreuche, Michel Piotin, Francis Turjman, Bertrand Lapergue
OBJECTIVE Several randomized trials have been focused on patients with anterior circulation stroke, whereas few data on posterior circulation stroke are available. Thus, new mechanical thrombectomy (MT) strategies, including a direct-aspiration first-pass technique (ADAPT), remain to be evaluated in basilar artery occlusion (BAO) patients. The authors here assessed the influence of reperfusion on outcome in BAO patients and examined whether ADAPT improves the reperfusion rate compared with stent retriever devices...
January 12, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29327863/endoscopic-endonasal-transpterygoid-approach-to-petrous-pathologies-technique-limitations-and-alternative-approaches
#9
Gautam U Mehta, Shaan M Raza
The endoscopic endonasal transpterygoid approach is a versatile technique, providing direct access to the petrous apex through an anterior surgical corridor. In this review we detail the transpterygoid approach to the petrous apex and highlight its relative indications. Although this approach is a useful strategy for many lesions of the petrous apex, disease extension into lateral, superior, or posterior compartments may limit extent of resection afforded by an anterior approach alone. Based on these considerations, a disease compartment-specific strategy is discussed...
January 10, 2018: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/29327559/-combined-surgical-approaches-in-the-treatment-of-complex-tibial-plateau-fractures
#10
Guang-Hua Yuan, Xiao Zheng, Kang Chen
OBJECTIVE: To explore the early clinical efficacy of a posteromedial inverted "L" shape approach combined an assisted antero lateral assisted approach for the treatment of complex fractures of tibial plateau. METHODS: From March 2011 to June 2014, the posteromedial inverted "L" shape approach combined with the antero lateral assisted approach in the treatment of Schatzker type IV, V, VI tibial plateau fracture were performed in 34 cases. There were 23 males and 11 females, ranging in age from18 to 67 years old, averaged 34...
January 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29326906/a-comparison-of-ground-reaction-force-components-according-to-the-foothold-heights-in-16-t-truck-during-downward-step
#11
Seung-Hyun Hyun, Che-Cheong Ryew
The aim of this study is to compare and analyze the components of ground reaction force (GRF) relative to the foothold heights during downward step of 16-t truck. Adult males (n= 10) jumped downward from each 1st, 2nd, 3rd foothold step and driver's seat orderly using hand rail. Sampling rate of force components of 3 axis (medial-lateral [ML] GRF, anterior-posterior [AP] GRF, peak vertical force [PVF]), variables (COPx, COPy, COP area) of center of pressure (COP), loading rate, and stability index (ML, AP, vertical, and dynamic postural stability index [DPSI]) processed from GRF system was cut off at 1,000 Hz...
December 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29325384/-diagnosis-and-treatment-of-strabismus-caused-by-nasal-endoscopic-surgery
#12
L K Ai, X Wu, J N Wang, J Li, Y Wu, J Zhou, W X Song, R L Guo
Objective: Strabismus with diplopia is the main orbital complication of functional endoscopic sinus surgery (FESS). This study was to analyze clinical findings, treatment and outcomes of such cases. Methods: Retrospective case series. Twenty-three cases were divided into 3 groups based on the disease severity: group A, partial transection of the medial rectus muscle, group B, complete transection of the medical rectus, group C, transection of the medial rectus combined with the other orbital injuries. Complete ophthalmology examinations, including eye alignment, eye motility, force duction test, force generation test, general eye exam, and medical imaging (orbital CT or MRI), were performed for each case...
December 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29324877/impact-of-extra-articular-pathologies-on-groin-pain-an-arthroscopic-evaluation
#13
Mitsunori Kaya
PURPOSE: For patients who have anterior hip pain evaluated by Patrick's test and tenderness at Scarpa's triangle, we perform periarticular debridement based on the hypothesis that extra-articular pathologies are responsible for the hip pain. The purpose of this study was to categorize the endoscopic extra-articular findings and to evaluate the clinical significance of periarticular pathologies in anterior hip pain. METHODS: Arthroscopic findings of 77 patients who underwent periarthritic debridement were evaluated...
2018: PloS One
https://www.readbyqxmd.com/read/29323932/the-effects-of-breath-alcohol-concentration-on-postural-control
#14
Dary D Fiorentino
STRUCTURED ABSTRACT Background: Two of the three standardized field sobriety tests that US law enforcement uses at roadside checks have a postural equilibrium component to them. Those tests have been validated to detect impairment caused by blood alcohol concentrations (BACs) of .08 g/dL or above. Many medical and traffic safety associations support a lower limit, and one state, Utah, has passed a law to lower the limit to .05 g/dL. Many studies have examined the effects of alcohol on postural control (of which postural equilibrium is a component), with a consensus emerging that impairment is usually found at BACs greater than ...
January 11, 2018: Traffic Injury Prevention
https://www.readbyqxmd.com/read/29323773/direct-fiber-reinforced-interim-fixed-partial-dentures-six-year-survival-study
#15
Luciana Maria Goguta, Adrian Candea, Diana Lungeanu, Mirela Frandes, Anca Jivanescu
PURPOSE: Mechanical and optical studies of glass fiber composites have revealed great resistance and satisfactory bonds between the glass fibers and composite resins. This study aimed to evaluate the long-term survival of anterior and posterior direct glass fiber-reinforced composite (FRC) fixed partial dentures (FPD). MATERIALS AND METHODS: Twenty-three patients (9 men, 14 women) aged 18 to 67 received 23 d-FRC-FPDs. The frameworks of the FPDs were unidirectional pre-impregnated glass fibers (ever Stick C&B)...
January 11, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29323129/comparison-of-adaptation-between-the-major-connectors-fabricated-from-intraoral-digital-impressions-and-extraoral-digital-impressions
#16
Ning Gan, Yaye Ruan, Jian Sun, Yaoyang Xiong, Ting Jiao
The objective was to compare the adaptation between the major connectors of removable partial dentures derived from intraoral digital impressions and extraoral digital impressions. Twenty-four volunteers were enrolled. Each volunteer received an intraoral digital impression and one extraoral digital impression digitized from conventional gypsum impression. A software was used to create the major connectors on digital impression datasets. After all the virtual major connectors designed from Group intraoral digital impressions (Group I) and Group extraoral digital impressions (Group E) were directly fabricated by 3D printing technique, the adaptation of the final major connectors in volunteers' mouths were measured...
January 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29322899/is-the-pelvis-stable-during-supine-total-hip-arthroplasty
#17
S M Shah, W L Walter, J Ngo
Intra- operative changes in pelvic position during total hip arthroplasty (THA) can affect acetabular orientation. We evaluated these changes during supine THA using a proprietary mobile application called PelvicTracker. Twenty- two patients undergoing THA using direct anterior approach were included in the study. In the sagittal plane, the pelvis was extended (anterior tilt) as compared to the start of surgery in 19/ 22 hips at the time of cup implantation (mean extension: 3.1°; range: 1°-6°). In the transverse plane, the pelvis was rolled to the opposite side of surgery in 12 hips (mean roll: 2...
March 2017: Acta Orthopaedica Belgica
https://www.readbyqxmd.com/read/29322521/fitting-unanchored-puzzle-pieces-in-the-skeleton-appropriate-3d-scapular-positions-for-the-quadrupedal-support-in-tetrapods
#18
Shin-Ichi Fujiwara
Deducing the scapular positions of extinct tetrapod skeletons remains difficult, because the scapulae and rib cage are connected with each other not directly by skeletal joint, but by thoracic muscles. In extant non-testudine quadrupedal tetrapods, the top positions of the scapulae/suprascapulae occur at the anterior portion of the rib cage, above the vertebral column and near the median plane. The adequacy of this position was tested using three-dimensional mechanical models of Felis, Rattus and Chamaeleo that assumed stances on a forelimb on a single side and the hindlimbs...
January 11, 2018: Journal of Anatomy
https://www.readbyqxmd.com/read/29322298/a-new-microsporidium-fibrillaspora-daphniae-g-n-sp-n-infecting-daphnia-magna-crustacea-cladocera-in-siberia-and-its-taxonomic-placing-within-a-new-family-fibrillasporidae-and-new-superfamily-tubulinosematoidea-opisthosporidia-microsporidia
#19
Anastasia V Simakova, Yuri S Tokarev, Irma V Issi
Infection with a new microsporidium, Fibrillaspora daphniae g. n. sp. n., was found in a local Daphnia magna population in Tomsk region (Western Siberia, Russia) at the prevalence rate of 52%. Histological sections showed parasite cells entirely encompassing the host haemocoel. Methanol-fixed spores were elongate, oval, 4.8 ± 0.3 μm × 2.3 ± 0.2 μm in size. All developmental stages were in direct contact with the host cell cytoplasm, with single nuclei, and division by binary fission. The sporont surface was covered with an additional outer layer composed of fine tubules...
January 10, 2018: Parasitology Research
https://www.readbyqxmd.com/read/29322239/the-lateralized-arcuate-fasciculus-in-developmental-pitch-disorders-among-mandarin-amusics-left-for-speech-and-right-for-music
#20
Xizhuo Chen, Yanxin Zhao, Suyu Zhong, Zaixu Cui, Jiaqi Li, Gaolang Gong, Qi Dong, Yun Nan
The arcuate fasciculus (AF) is a neural fiber tract that is critical to speech and music development. Although the predominant role of the left AF in speech development is relatively clear, how the AF engages in music development is not understood. Congenital amusia is a special neurodevelopmental condition, which not only affects musical pitch but also speech tone processing. Using diffusion tensor tractography, we aimed at understanding the role of AF in music and speech processing by examining the neural connectivity characteristics of the bilateral AF among thirty Mandarin amusics...
January 10, 2018: Brain Structure & Function
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