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https://www.readbyqxmd.com/read/28332863/male-and-female-worldsid-and-post-mortem-human-subject-responses-in-full-scale-vehicle-tests
#1
Narayan Yoganandan, John Humm, Frank Pintar, Heather Rhule, Kevin Moorhouse, Brian Suntay, Jim Stricklin, Rodney Rudd, Matthew Craig
Structured ABSTRACT Objective: To compare the responses of male and female WorldSID dummies with post mortem human subject (PMHS) responses in full-scale vehicle tests. METHODS: Tests were conducted according to the FMVSS-214 protocols and using the United States Side impact New Car Assessment Program change in velocity to match PMHS experiments, published earlier. Moving deformable barrier (MDB) tests were conducted with the male and female surrogates in the left front and left rear seats...
March 23, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28331906/associations-between-sarcopenia-and-degenerative-lumbar-scoliosis-in-older-women
#2
Yawara Eguchi, Munetaka Suzuki, Hajime Yamanaka, Hiroshi Tamai, Tatsuya Kobayashi, Sumihisa Orita, Kazuyo Yamauchi, Miyako Suzuki, Kazuhide Inage, Kazuki Fujimoto, Hirohito Kanamoto, Koki Abe, Yasuchika Aoki, Tomoaki Toyone, Tomoyuki Ozawa, Kazuhisa Takahashi, Seiji Ohtori
BACKGROUND: Age-related sarcopenia can cause various forms of physical disabilities. We investigated how sarcopenia affects degenerative lumbar scoliosis (DLS) and lumbar spinal canal stenosis (LSCS). METHODS: Subjects comprised 40 elderly women (mean age 74 years) with spinal disease whose chief complaints were low back pain and lower limb pain. They included 15 cases of DLS (mean 74.8 years) and 25 cases of LSCS (mean age 72.9 years). We performed whole-body dual-energy X-ray absorptiometry (DXA) to analyze body composition, including appendicular and trunk skeletal muscle mass index (SMI; lean mass (kg)/height (m)(2)) and bone mineral density (BMD)...
2017: Scoliosis and Spinal Disorders
https://www.readbyqxmd.com/read/28320364/the-weight-of-pupils-schoolbags-in-early-school-age-and-its-influence-on-body-posture
#3
Anna Brzęk, Tarja Dworrak, Markus Strauss, Fabian Sanchis-Gomar, Ibtissam Sabbah, Birgit Dworrak, Roman Leischik
BACKGROUND: Postural development progresses through a series of stages (growth spurts, development of balance and coordination, postural stability) which occur when children are at school age. The reduction in the level of physical activity, increased body weight, overloaded school bags, asymmetry of the backpack straps, the method of putting on and taking off the backpacks and increased usage of electronic devices have negative side effects such as bad body posture habits. METHODS: A prospective cohort study in the group of 155 pupils at early school age 7-9 years old has been conducted...
March 21, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28319133/effects-of-sudden-walking-perturbations-on-neuromuscular-reflex-activity-and-three-dimensional-motion-of-the-trunk-in-healthy-controls-and-back-pain-symptomatic-subjects
#4
Juliane Mueller, Tilman Engel, Steffen Mueller, Josefine Stoll, Heiner Baur, Frank Mayer
BACKGROUND: Back pain patients (BPP) show delayed muscle onset, increased co-contractions, and variability as response to quasi-static sudden trunk loading in comparison to healthy controls (H). However, it is unclear whether these results can validly be transferred to suddenly applied walking perturbations, an automated but more functional and complex movement pattern. There is an evident need to develop research-based strategies for the rehabilitation of back pain. Therefore, the investigation of differences in trunk stability between H and BPP in functional movements is of primary interest in order to define suitable intervention regimes...
2017: PloS One
https://www.readbyqxmd.com/read/28277384/key-vertebral-pedicle-screw-strategy-for-the-correction-of-flexible-lenke-type-1-adolescent-idiopathic-scoliosis-a-preliminary-study-of-a-5-year-minimum-radiographic-follow-up
#5
Fei Wang, Xiao-Yi Zhou, Yi-Lin Yang, Xi-Ming Xu, Jing-Feng Li, Yu-Shu Bai, Xiao-Dong Zhu, Ming Li, Xian-Zhao Wei
STUDY DESIGN: A retrospective clinical and radiographic study. OBJECTIVE: To evaluate outcomes of the key vertebral pedicle screw strategy (KVPSS) for the correction of flexible Lenke type 1 adolescent idiopathic scoliosis (AIS) with a minimum follow-up of 5 years. SUMMARY OF BACKGROUND DATA: The KVPSS has been described as an alternative screw placement strategy for surgically treating the main thoracic curve in AIS patients. However, there have been no long-term, three-dimensional correction studies of selective thoracic fusion using the KVPSS in Lenke type 1AIS...
March 8, 2017: Spine
https://www.readbyqxmd.com/read/28267550/a-correlative-study-of-aortic-valve-rotation-angle-and-thoracic-aortic-sizes-using-ecg-gated-ct-angiography
#6
Farhood Saremi, Steven Cen, Nazila Tayari, Houman Alizadeh, Amir Emami, Leah Lin, Fernando Fleischman
OBJECTIVE: Various degrees of aortic valve rotation may be seen in individuals with no history of congenital cardiovascular malformations, but its association with aortic sizes has not been studied. METHODS: Gated computed tomographic (CT angiograms in 217 patients were studied (66.7±15; 22-97 years old)). Aortic diameters were determined at 5 anatomic locations. The length of the aorta from sinus to left subclavian artery was measured. The angle of valve rotation was recorded by measuring the angle between a line connecting the midpoint of the non-coronary sinus to the anterior commissure and another line along the interatrial septum...
April 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28259517/short-term-effects-of-thoracic-spine-manipulation-on-shoulder-impingement-syndrome-a-randomized-controlled-trial
#7
Melina N Haik, Francisco Alburquerque-Sendín, Paula R Camargo
OBJECTIVE: To investigate the short-term effects of thoracic spine manipulation (TSM) on pain, function, scapular kinematics and scapular muscle activity in individuals with shoulder impingement syndrome (SIS). DESIGN: Blinded assessor and patient, randomized controlled trial. SETTING: Laboratory. PARTICIPANTS: Sixty-one patients with SIS. INTERVENTION: Participants were randomly allocated to TSM (n=30) or sham-TSM group (n=31) and attended 2 intervention sessions over a 1-week period...
March 1, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28259271/influence-of-sequential-ponte-osteotomies-on-the-human-thoracic-spine-with-a-rib-cage
#8
Erin M Mannen, Paul M Arnold, John T Anderson, Elizabeth A Friis
STUDY DESIGN: Biomechanical cadaveric study. OBJECTIVES: The purpose of this study was to determine the change in range of motion (ROM) of the human thoracic spine and rib cage due to sequential Ponte osteotomies (POs). SUMMARY OF BACKGROUND DATA: POs are often performed in deformity correction surgeries to provide flexibility in the sagittal plane at an estimated correction potential of 5° per PO, but no studies have evaluated the biomechanical impact of the procedure on a cadaveric model with an intact rib cage...
March 2017: Spine Deformity
https://www.readbyqxmd.com/read/28252676/factors-affecting-interest-in-cardiothoracic-surgery-among-junior-surgical-residents-in-nigeria
#9
Emeka B Kesieme, Umar Abubakar, Olugbenga Olusoji, Ismail Mohammed Inuwa, John Kefas, Ndubuisi Anumenechi
OBJECTIVE: A survey was undertaken to determine the factors that affect interest in cardiothoracic surgery (CTS) among junior surgical residents in Nigeria. METHODS: A cross-sectional study was done using a pilottested, 56-item, semi-structured questionnaire, which was filled in by 238 junior surgical residents in accredited hospitals in Nigeria. RESULTS: Few of the respondents (8.4%) were committed to specialising in CTS. A minority of them, 28...
March 1, 2017: Cardiovascular Journal of Africa
https://www.readbyqxmd.com/read/28251190/upright-prone-and-supine-spinal-morphology-and-alignment-in-adolescent-idiopathic-scoliosis
#10
Rob C Brink, Dino Colo, Tom P C Schlösser, Koen L Vincken, Marijn van Stralen, Steve C N Hui, Lin Shi, Winnie C W Chu, Jack C Y Cheng, René M Castelein
BACKGROUND: Patients with adolescent idiopathic scoliosis (AIS) are usually investigated by serial imaging studies during the course of treatment, some imaging involves ionizing radiation, and the radiation doses are cumulative. Few studies have addressed the correlation of spinal deformity captured by these different imaging modalities, for which patient positioning are different. To the best of our knowledge, this is the first study to compare the coronal, axial, and sagittal morphology of the scoliotic spine in three different body positions (upright, prone, and supine) and between three different imaging modalities (X-ray, CT, and MRI)...
2017: Scoliosis and Spinal Disorders
https://www.readbyqxmd.com/read/28243381/effect-of-direct-vertebral-rotation-on-the-uninstrumented-lumbar-curve-in-thoracic-adolescent-idiopathic-scoliosis
#11
Sung-Soo Kim, Jung-Hoon Kim, Se-Il Suk
STUDY DESIGN: Retrospective study. PURPOSE: To determine the effect and direction of direct vertebral rotation (DVR) in the lowest instrumented vertebra (LIV) on the uninstrumented lumbar curve depending on the lumbar modifier used for the correction of thoracic adolescent idiopathic scoliosis. OVERVIEW OF LITERATURE: DVR in the LIV should be implemented in a different direction to obtain better spontaneous lumbar correction depending on the preoperative lumbar spine modifier...
February 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/28243367/preoperative-magnetic-resonance-imaging-evaluation-in-patients-with-adolescent-idiopathic-scoliosis
#12
Choon Sung Lee, Chang Ju Hwang, Nam Heun Kim, Hyun Min Noh, Mi Young Lee, So Jung Yoon, Dong-Ho Lee
STUDY DESIGN: Retrospective case series. PURPOSE: The purpose of this study was to examine the incidence of neural axis abnormalities and the relevant risk factors in patients with adolescent idiopathic scoliosis (AIS). OVERVIEW OF LITERATURE: The use of preoperative magnetic resonance imaging (MRI) to assess the whole spine in patients with idiopathic scoliosis is controversial, and indications for such MRI evaluations have not been definitively established...
February 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/28230622/restriction-of-cervical-intervertebral-movement-with-different-types-of-external-immobilizers-a-cadaveric-3d-analysis-study
#13
Micha Holla, Gerjon Hannink, Thomas G E Eggen, Robin A Daanen, Allard J F Hosman, Nico Verdonschot
STUDY DESIGN: Cadaveric radiostereometric analysis study. OBJECTIVE: To quantify the ability of 5 commonly used immobilizers to restrict cervical spine movement, including intervertebral movement, in three directions. SUMMARY OF BACKGROUND DATA: Evidence about the ability of many clinically used cervical immobilizers to restrict cervical movement is limited. Furthermore, their effect on intervertebral movement is unknown. METHODS: Radiographic inert beads were implanted in the cervical vertebral bodies of five fresh-frozen human cadavers...
February 22, 2017: Spine
https://www.readbyqxmd.com/read/28229432/spontaneous-torsion-of-the-right-upper-lung-lobe-a-case-report
#14
Yusuke Kita, Tetsuhiko Go, Kazuhito Nii, Natsumi Matsuura, Hiroyasu Yokomise
BACKGROUND: Pulmonary torsion is usually caused by thoracic surgery or trauma. Spontaneous pulmonary torsion caused by tumor and pleural effusion is very rare. CASE PRESENTATION: A 76-year-old Asian male with a chronic cough and suspected lung or pleural tumor presented with sudden dyspnea. Computed tomography showed that the right upper lung lobe contained a large tumor in the region of S1-3; the tumor had shifted to the posterior thoracic space and rotated 90° counterclockwise, potentially impeding blood flow...
December 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/28180978/3d-rod-shape-changes-in-adolescent-idiopathic-scoliosis-instrumentation-how-much-does-it-impact-correction
#15
Franck Le Navéaux, Carl-Eric Aubin, Stefan Parent, Peter O Newton, Hubert Labelle
PURPOSE: Flattening of rods is known to reduce the correction capability of the instrumentation, but has not been studied in 3D. The aim is to evaluate the rods shape 3D changes during and immediately after instrumentation, and its effect on 3D correction. METHODS: The 5.5 mm CoCr rods of 35 right thoracic adolescent idiopathic scoliosis patients were measured from rod tracings prior to insertion, and reconstructed in 3D from bi-planar radiographs taken intra-operatively after the correction maneuvers and 1 week post-operatively...
February 8, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28152019/3d-modeling-of-the-spine-using-eos-imaging-system-inter-reader-reproducibility-and-reliability
#16
Johannes Rehm, Thomas Germann, Michael Akbar, Wojciech Pepke, Hans-Ulrich Kauczor, Marc-André Weber, Daniel Spira
OBJECTIVES: To retrospectively assess the interreader reproducibility and reliability of EOS 3D full spine reconstructions in patients with adolescent idiopathic scoliosis (AIS). METHODS: 73 patients with mean age of 17 years and a moderate AIS (median Cobb Angle 18.2°) obtained low-dose standing biplanar radiographs with EOS. Two independent readers performed "full spine" 3D reconstructions of the spine with the "full-spine" method adjusting the bone contour of every thoracic and lumbar vertebra (Th1-L5)...
2017: PloS One
https://www.readbyqxmd.com/read/28144582/reliability-and-concurrent-validity-of-postural-asymmetry-measurement-in-adolescent-idiopathic-scoliosis
#17
Ashleigh Prowse, Berit Aslaksen, Marie Kierkegaard, James Furness, Paul Gerdhem, Allan Abbott
AIM: To investigate the reliability and concurrent validity of the Baseline(®) Body Level/Scoliosis meter for adolescent idiopathic scoliosis postural assessment in three anatomical planes. METHODS: This is an observational reliability and concurrent validity study of adolescent referrals to the Orthopaedic department for scoliosis screening at Karolinska University Hospital, Stockholm, Sweden between March-May 2012. A total of 31 adolescents with idiopathic scoliosis (13...
January 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28131428/a-new-intraoperative-protocol-for-reducing%C3%A2-perioperative-transfusions-in%C3%A2-cardiac-surgery
#18
J Hunter Mehaffey, Sarah A Schubert, Michael G Gelvin, Eric J Charles, Robert B Hawkins, Lily E Johnston, Gorav Ailawadi, Irving L Kron, Leora T Yarboro
BACKGROUND: Perioperative anemia and blood product transfusion increases short-term and long-term morbidity and mortality during cardiac surgery. We hypothesized that streamlined cardiopulmonary bypass circuit and rotational thromboelastometry (ROTEM) would reduce blood product usage and improve outcomes. METHODS: All patients with Society of Thoracic Surgeons risk scores at our institution from January 2013 to June 2015 were included. Individuals were chronologically stratified into 2 groups according to institutional changes to a streamlined bypass circuit and ROTEM-guided transfusion...
January 25, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28114115/fully-automatic-segmentation-of-arbitrarily-shaped-fiducial-markers-in-cone-beam-ct-projections
#19
J Bertholet, H Wan, J Toftegaard, M L Schmidt, F Chotard, P J Parikh, P R Poulsen
Radio-opaque fiducial markers of different shapes are often implanted in or near abdominal or thoracic tumors to act as surrogates for the tumor position during radiotherapy. They can be used for real-time treatment adaptation, but this requires a robust, automatic segmentation method able to handle arbitrarily shaped markers in a rotational imaging geometry such as cone-beam computed tomography (CBCT) projection images and intra-treatment images. In this study, we propose a fully automatic dynamic programming (DP) assisted template-based (TB) segmentation method...
February 21, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28089512/paleozoic-nymphal-wing-pads-support-dual-model-of-insect-wing-origins
#20
Jakub Prokop, Martina Pecharová, André Nel, Thomas Hörnschemeyer, Ewa Krzemińska, Wiesław Krzemiński, Michael S Engel
The appearance of wings in insects, early in their evolution [1], has been one of the more critical innovations contributing to their extraordinary diversity. Despite the conspicuousness and importance of wings, the origin of these structures has been difficult to resolve and represented one of the "abominable mysteries" in evolutionary biology [2]. More than a century of debate has boiled the matter down to two competing alternatives-one of wings representing an extension of the thoracic notum, the other stating that they are appendicular derivations from the lateral body wall...
January 23, 2017: Current Biology: CB
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