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https://www.readbyqxmd.com/read/28426143/coronal-transcranial-sonography-and-m-mode-tremor-frequency-determination-in-parkinson-s-disease-and-essential-tremor
#1
Daniel Richter, Dirk Woitalla, Siegfried Muhlack, Ralf Gold, Lars Tönges, Christos Krogias
BACKGROUND AND PURPOSE: The axial mesencephalic transcranial sonography plane is an established and sensitive diagnostic tool for the differentiation of Parkinson's disease and essential tremor. However, the substantia nigra can also be depicted in a second coronal examination plane, whose diagnostic value has not yet been evaluated. Furthermore, the M-mode tremor frequency determination represents another sonographic tool, which might yield additional diagnostic value. METHODS: We included patients with diagnosed Parkinson's disease (n = 31), essential tremor (n = 16), and healthy age-matched controls (n = 16)...
April 20, 2017: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/28420897/in-vivo-analysis-of-three-dimensional-dynamic-scapular-dyskinesis-in-scapular-or-clavicular-fractures
#2
Eugene Kim, Jai Hyung Park, Byeong-Ryong Han, Hee Jin Park, So Yeon Lee, Tsuyoshi Murase, Kazumi Sugamoto, Sumika Ikemoto, Se-Jin Park
The three-dimensional (3D) kinematics of the scapula were analyzed in vivo in 10 patients with scapular and 10 patients with clavicular fracture. Both the injured shoulder and normal contralateral shoulder were evaluated by computed tomography in the neutral and fully elevated positions. 3D rotational and translational movements of the scapula relative to the thorax during arm elevation were analyzed. A computer simulation program was used to compare rotational elevation/depression in the coronal plane, anterior/posterior tilting in the sagittal plane and protraction/retraction in the axial plane between the normal and affected sides...
April 2017: Acta Medica Okayama
https://www.readbyqxmd.com/read/28419135/an-organotypic-slice-culture-to-study-the-formation-of-calyx-of-held-synapses-in-vitro
#3
Elin Kronander, Nicolas Michalski, Cécile Lebrand, Jean-Pierre Hornung, Ralf Schneggenburger
The calyx of Held, a large axo-somatic relay synapse containing hundreds of presynaptic active zones, is possibly the largest nerve terminal in the mammalian CNS. Studying its initial growth in-vitro might provide insights into the specification of synaptic connection size in the developing brain. However, attempts to maintain calyces of Held in organotypic cultures have not been fruitful in past studies. Here, we describe an organotypic slice culture method in which calyces of Held form in-vitro. We made coronal brainstem slices with an optimized slice angle using newborn mice in which calyces have not yet formed; the presynaptic bushy cells were genetically labeled using the Math5 promoter...
2017: PloS One
https://www.readbyqxmd.com/read/28417474/first-trimester-sonographic-evaluation-of-palatine-clefts-a-novel-diagnostic-approach
#4
Selvaraj Ravi Lakshmy, Selvaraj Deepa, Nity Rose, Senthilkumar Mookan, Joy Agnees
OBJECTIVES: Sonographic evaluation of the palate is a difficult task, and most palatine clefts are diagnosed in the neonatal period because of the limitations of 2-dimensional (2D) sonography. The objective is to describe a sonographic technique based on 2D markers for screening of palatine clefts during the nuchal translucency scan and to assess the ability of 3-dimensional (3D) sonography in imaging the normal and abnormal palate. METHODS: A total of 2014 women who enrolled for first-trimester screening were included in this prospective study...
April 18, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28416842/-drainage-characteristic-of-the-brain-interstitial-fluid-detected-by-using-fluorescence-and-magnetic-tracer-method
#5
Y Zhao, Y Q Li, H Y Li, Y L Li, L X Liu, L Yuan, S J Zhang, H B Han
OBJECTIVE: Compare the results of molecular diffusion and mass flow in the interstitial space(ISS) displayed by using optical and magnetic probes and study partitioned drainage of the brain interstitial fluid (ISF). METHODS: In the study, 36 male SD rats were randomly divided into fluorescent inspection group (18), magnetic tracer group (18). Then they were divided equally into caudate nucleus (Cn), thalamus (T) and substantia nigra (Sn) subgroup, 6 rats in each subgroup...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28412085/in-vivo-evidence-of-significant-levator-ani-muscle-stretch-on-mr-images-of-a-live-childbirth
#6
Nikhil Sindhwani, Christian Bamberg, Nele Famaey, Geertje Callewaert, Joachim W Dudenhausen, Ulf Teichgräber, Jan Deprest
OBJECTIVE: Vaginal childbirth is believed to be a significant risk factor for the development of pelvic floor dysfunction later in life. Previous studies have explored the use of medical imaging and simulations of childbirth to determine the stretch in the levator ani muscle. Bamberg et al, 2012, have recorded MR images of a live childbirth of a 24 year old woman giving birth vaginally for the second time, using a 1.0 Tesla open high-field scanner. Our objective was to determine the stretch ratios in the levator muscle using these MR images of live childbirth...
April 12, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28410682/integrated-digital-tomosynthesis-for-patient-positioning-of-image-guided-radiation-therapy
#7
Hui Yan, Jian-Rong Dai
PURPOSE: Digital Tomosynthesis (DTS), originally developed for diagnostic applications, has been recently introduced to image guided radiotherapy (IGRT). Due to limited scan range, DTS was featured by anisotropic spatial resolution. A new approach, integrated DTS (IDTS), was developed to improve image resolution of DTS for patient positioning in IGRT. MATERIALS AND METHODS: For registration purpose, both on-board IDTS (O-IDTS) and reference IDTS (R-IDTS) were required...
April 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28410567/farm-suicides-in-new-zealand-2007-2015-a-review-of-coroners-records
#8
Annette L Beautrais
OBJECTIVE: Economic recessions and severe weather events are often associated with increased suicide rates. The Global Dairy Crisis 2015/2016 led to an economic downturn in the New Zealand dairy farming industry and, coupled with droughts in some regions and floods in others, raised fears about increased suicide rates among farmers. However, little was known about suicides in the farming sector. This study reviews characteristics of recent farm-related suicides in New Zealand and assesses the extent to which financial stresses contributed to the deaths...
April 1, 2017: Australian and New Zealand Journal of Psychiatry
https://www.readbyqxmd.com/read/28409100/arthroscopic-technique-for-treatment-of-schatzker-type-iii-tibia-plateau-fractures-without-fluoroscopy
#9
Afsar T Ozkut, Oguz S Poyanli, Ersin Ercin, Kaya Akan, Irfan Esenkaya
Accurate reduction and maintenance of the stability with correct implant positioning is critical for surgical treatment of tibial plateau fractures. Our technique includes an arthroscopic reduction and fixation of Schatzker type III tibial plateau fractures with a bulls-eye screw placement without fluoroscopy control. With the arthroscopic guidance, an anterior cruciate ligament drill guide is placed and a K-wire sent to the midpoint of the depressed fragment through the guide at a 40° angle to the coronal axis of the tibia...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28406557/determinants-of-iliac-blade-orientation-in-anthropoid-primates
#10
Emily R Middleton, Zachariah J Winkler, Ashley S Hammond, J Michael Plavcan, Carol V Ward
Orientation of the iliac blades is a key feature that appears to distinguish extant apes from monkeys. Iliac morphology is hypothesized to reflect variation in thoracic shape that, in turn, reflects adaptations for shoulder and forearm function in anthropoids. Iliac orientation is traditionally measured relative to the acetabulum, whereas functional explanations pertain to its orientation relative to the cardinal anatomical planes. We investigated iliac orientation relative to a median plane using digital models of hipbones registered to landmark data from articulated pelves...
May 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28396050/value-of-the-cumulative-sum-test-for-the-assessment-of-a-learning-curve-application-to-the-introduction-of-patient-specific-instrumentation-for-total-knee-arthroplasty-in-an-academic-department
#11
Marco De Gori, Benjamin Adamczewski, Jean-Yves Jenny
BACKGROUND: The purpose of the study was to use the cumulative summation (CUSUM) test to assess the learning curve during the introduction of a new surgical technique (patient-specific instrumentation) in total knee arthroplasty (TKA) in an academic department. METHODS: The first 50TKAs operated on at an academic department using patient-specific templates (PSTs) were scheduled to enter the study. All patients had a preoperative computed tomography scan evaluation to plan bone resections...
April 7, 2017: Knee
https://www.readbyqxmd.com/read/28393821/spectrophotometric-analysis-of-crown-discoloration-induced-by-two-different-sealers-an-in-vitro-study
#12
Rashmi Keshav Chahande, Sanjay S Patil, Vandana Gade, Rishikesh Meshram, Deepika J Chandhok, Deepa A Thakur
CONTEXT: Endodontic materials have been assessed with regards to their potential for dental staining. AIMS: To evaluate the coronal discoloration effect of Apexit Plus and Resino Seal in mandibular premolars using spectrophotometer. SETTINGS AND DESIGN: The study design was original research. MATERIALS AND METHODS: Forty human single-rooted mandibular first premolar teeth were selected for the study. They were divided into four groups of ten specimens each...
January 2017: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28390808/morphological-characteristics-of-external-auditory-canal-in-congenital-aural-stenosis-patients
#13
Dongming Yin, Chenlong Li, Keguang Chen, Juan Hong, Jieying Li, Lin Yang, Tianyu Zhang, Peidong Dai
Objective To investigate characteristics of congenital aural stenosis (CAS) patients' external auditory canal (EAC) (position, length, orientation, etc.) and compare them with normal EAC. METHODS: CT images of normal people and CAS patient were utilized. We obtained coordinates of EAC landmarks. Then the Matlab program could calculate some anatomic parameters about EAC, including distances from central point of tympanic annulus (CA), central point of osseous EAC opening (CO), central point of cartilaginous EAC inside opening (CCi), central point of cartilaginous EAC outside opening (CCo) to the Frankfurt horizontal plane (Pfrkt), the median sagittal plane (Psag), the coronal plane (Pcor); orientations of EAC bendings; straight and arc lengths of EAC...
April 1, 2017: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/28390685/plate-fixation-for-letenneur-type-i-hoffa-fracture-a-biomechanical-study
#14
Hui Sun, Qi-Fang He, Yi-Gang Huang, Jian-Feng Pan, Cong-Feng Luo, Yi-Min Chai
BACKGROUND: A coronal fracture of the posterior femoral condyle, also known as a Hoffa fracture, is an unusual injury, and there are only a handful of case reports or series exploring it. The optimal fixation method of these intraarticular fractures remains controversial; improper or unstable fixation usually lead to an unsatisfactory prognosis. The use of posterior-anterior or reversed lag screw fixation is still a popular method. Additional buttress plating is also recommended for fixation of these difficult fractures...
March 30, 2017: Injury
https://www.readbyqxmd.com/read/28389070/morphologic-change-of-parvalbumin-positive-myelinated-axons-in-the-human-dental-pulp
#15
Tae Heon Kim, Sook Kyung Park, So Young Choi, Jae Sik Lee, Yong Chul Bae
INTRODUCTION: Information on the nerve fibers innervating the dental pulp is crucial for understanding dental pain and hypersensitivity. This study investigated the morphologic differences of parvalbumin (PV)-positive (+) myelinated fibers in 3 different regions of the human dental pulp. METHODS: Light and electron microscopic immunohistochemistry for parvalbumin, a marker for myelinated fibers, and quantitative analysis were performed in the apical root, core of coronal pulp, and peripheral pulp of human premolar teeth...
April 4, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28387610/the-influence-of-apico-coronal-implant-placement-on-post-surgical-crestal-bone-loss-in-humans
#16
Carlo Ercoli, Georges Jammal, Madeline Buyers, Alexandra Athanasiou Tsigarida, Konstantinos Michail Chochlidakis, Changyong Feng, Jack Caton
BACKGROUND: Contradictory results exist regarding the influence of apicocoronal implant placement on crestal bone levels. METHODS: Complete charts of patients ≥18 y.o. with dental implant/s were included. Demographic, medical, surgical and prosthetic information was recorded. Implant Bone levels were evaluated at initial placement, implant uncovery, prosthetic delivery and 3-6, 7-11, and 12-18 months post-implant placement. RESULTS: 55 patients'charts and 134 implants were included...
April 7, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28384608/segmental-kinematic-analysis-of-planovalgus-feet-during-walking-in-children-with-cerebral-palsy
#17
Karen M Kruger, Katherine A Konop, Joseph J Krzak, Adam Graf, Haluk Altiok, Peter A Smith, Gerald F Harris
Pes planovalgus (flatfoot) is a common deformity among children with cerebral palsy. The Milwaukee Foot Model (MFM), a multi-segmental kinematic foot model, which uses radiography to align the underlying bony anatomy with reflective surface markers, was used to evaluate 20 pediatric participants (30feet) with planovalgus secondary to cerebral palsy prior to surgery. Three-dimensional kinematics of the tibia, hindfoot, forefoot, and hallux segments are reported and compared to an age-matched control set of typically-developing children...
March 23, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28377644/finite-element-analysis-of-sagittal-balance-in-different-morphotype-forces-and-resulting-strain-in-pelvis-and-spine
#18
REVIEW
Vincenzo Filardi, Portaro Simona, Giorgio Cacciola, Salvatore Bertino, Luigi Soliera, Andrea Barbanera, Alessandro Pisani, Demetrio Milardi, Bramanti Alessia
In humans, vertical posture acquisition caused several changes in bones and muscles which can be assumed as verticalization. Pelvis, femur, and vertebral column gain an extension position which decreases muscular work by paravertebral muscles in the latter. It's widely known that six different morphological categories exist; each category differs from the others by pelvic parameters and vertebral column curvatures. Both values depend on the Pelvic Incidence, calculated as the angle between the axes passing through the rotation centre of the two femur heads and the vertical axis passing through the superior plate of the sacrum...
June 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28366688/a-novel-diagnostic-parameter-foraminal-stenotic-ratio-using-3d-mri-as-a-discriminator-for-surgery-in-symptomatic-lumbar-foraminal-stenosis
#19
Kentaro Yamada, Yuichiro Abe, Shigenobu Satoh, Yasushi Yanagibashi, Takahiko Hyakumachi, Takeshi Masuda
BACKGROUND CONTEXT: No previous studies have reported the radiological features of patients requiring surgery in symptomatic lumbar foraminal stenosis. PURPOSE: To investigate the diagnostic accuracy of a novel technique, foraminal stenotic ratio (FSR), using three-dimensional magnetic resonance imaging (3D-MRI) for lumbar foraminal stenosis at L5-S by comparing patients requiring surgery, those with successful conservative treatment, and asymptomatic patients. STUDY DESIGN: Retrospective radiologic comparative study...
March 30, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28366494/intertrochanteric-fracture-association-between-the-coronal-position-of-the-lag-screw-and-stress-distribution
#20
Changxiang Liang, Ruiping Peng, Nan Jiang, Guoping Xie, Lei Wang, Bin Yu
BACKGROUND/PURPOSE: The best position of the lag screw in the femoral head for the fixation of intertrochanteric fracture is controversial. Traditional view suggests that it should be positioned in the central axis of the femoral neck with a tip-apex distance (TAD) of <25 mm, but the mechanical properties have not been reported yet. Herein, we aimed to investigate internal fixation with the lag screw placed in different positions on the femoral coronal plane by performing a finite element analysis and to identify a reasonable lag screw position after the internal stress distributions at the femoral head...
March 30, 2017: Asian Journal of Surgery
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