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https://www.readbyqxmd.com/read/29202876/application-of-two-parameter-scoliometer-values-for-predicting-scoliotic-cobb-angle
#1
Hsuan-Hsiao Ma, Ching-Lung Tai, Lih-Huei Chen, Chi-Chien Niu, Wen-Jer Chen, Po-Liang Lai
BACKGROUND: Adolescent idiopathic scoliosis, in which obvious curves are visible in radiographic images, is also seen in combination with lumps in the back. These lumps contribute to inclination, which can be measured by a scoliometer. To the authors' knowledge, there are no previous formulas combining thoracic and lumbar scoliometer values simultaneously to predict thoracic and lumbar Cobb angles, respectively. This study aimed to create more accurate two-parameter mathematical formulas for predicting thoracic and lumbar Cobb angles...
December 4, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29200654/scoliosis-deformity-reduction-in-adults-a-cbp%C3%A2-mirror-image%C3%A2-case-series-incorporating-the-non-commutative-property-of-finite-rotation-angles-under-addition-in-five-patients-with-lumbar-and-thoraco-lumbar-scoliosis
#2
Deed E Harrison, Paul A Oakley
[Purpose] This case series presents the unique application of the non-commutative property of finite rotation angles under addition to the CBP® mirror image® treatment protocol for adult lumbar and thoraco-lumbar scoliosis. [Subjects and Methods] Five adult patients having lumbar/thoraco-lumbar scoliosis and back pain, and having at least two prominent thoracic postural abnormalities according to Harrison's rotations and translations of thoracic postures were included. After initial assessment, mirror-image stress x-rays were taken...
November 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29189527/end-vertebra-versus-apical-vertebra-where-are-we-more-likely-to-misplace-in-spine-deformity
#3
Vishal Sarwahi, Stephen F Wendolowski, Yungtai Lo, Beverly Thornhill, Terry Amaral
BACKGROUND DATA: Pedicle screws placement remains technically demanding. The thoracic curve apex is considerably difficult due to its unique morphology and severe rotation. In comparison the upper end vertebrae have smaller pedicles and limited soft tissue exposure. This study seeks to evaluate the likelihood of screw misplacement at the end vertebra and apex. METHODS: A retrospective review of preoperative and postoperative computed tomographic (CT) scans of spinal deformity patients who underwent posterior spinal fusion with pedicle screw constructs between 2004 and 2011 was performed...
November 16, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/29186600/an-in-vitro-biomechanical-model-of-differing-pedicle-screw-configurations-for-long-construct-segmental-thoracic-fixation
#4
Alexander Tuchman, Alexander W L Turner, Melodie F Metzger, Frank L Acosta
BACKGROUND: The optimum pattern of pedicle screw (PS) fixation during long-segment thoracic fixation has not been determined. OBJECTIVE: To evaluate rod stress and construct stability with minimal, alternating, skipped, and bilateral PS constructs in the iatrogenically destabilized thoracic spine. METHODS: Eight cadaveric thoracic specimens (T3-T12) were initially tested intact to ±5 Nm using a custom 6 degree-of-freedom spine testing apparatus in flexion-extension (FE), lateral bending (LB), and axial rotation...
December 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29158954/the-relationship-between-segmental-rolling-ability-and-lumbar-multifidus-activation-time
#5
Nicole Clark, Michael L Voight, Ashley M Campbell, Sherry Pierce, Pat Sells, Ryan Cook, Clint Henley, Lindsey Schiller
Background: Segmental rolling has been utilized as an assessment and intervention tool to identify and affect dysfunction of the upper quarter, core, and lower quarter. One theory to explain dysfunctional segmental rolling is a lack of segmental spinal control / stabilization. Faulty muscle firing sequencing has been related to poor spinal stability, however to date, no assessment tool exists to evaluate a patient's motor coordination of local and global musculature. Purpose: The purpose of this study was to assess the temporal sequence of lumbar multifidus activation associated with anterior deltoid activation, and to determine if faulty sequencing was associated with the inability to segmentally roll in subjects without mobility restrictions...
November 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/29124855/reconstructive-options-for-large-back-free-flap-donor-sites
#6
Arshia Azizeddin, Peter F M Choong, Damien Grinsell
BACKGROUND: Reconstruction of posterior thoracic and trunk defects can prove challenging even to the most seasoned surgeons. Many commonly used techniques for closing back defects include primary closure and split skin grafts. Often times, however, other techniques are needed in order to give the patient the best aesthetic and functional outcome. In this study, we focus on and evaluate donor site closure techniques for defects in the back created by harvesting scapular and parascapular flaps...
November 9, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/29106896/the-rib-cage-reduces-intervertebral-disc-pressures-in-cadaveric-thoracic-spines-by-sharing-loading-under-applied-dynamic-moments
#7
Dennis E Anderson, Erin M Mannen, Rebecca Tromp, Benjamin M Wong, Hadley L Sis, Eileen S Cadel, Elizabeth A Friis, Mary L Bouxsein
The effects of the rib cage on thoracic spine loading are not well studied, but the rib cage may provide stability or share loads with the spine. Intervertebral disc pressure provides insight into spinal loading, but such measurements are lacking in the thoracic spine. Thus, our objective was to examine thoracic intradiscal pressures under applied pure moments, and to determine the effect of the rib cage on these pressures. Human cadaveric thoracic spine specimens were positioned upright in a testing machine, and Dynamic pure moments (0 to ±5 N·m) with a compressive follower load of 400 N were applied in axial rotation, flexion - extension, and lateral bending...
October 12, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29097948/clinical-evaluation-of-scapular-positioning-in-patients-with-nonspecific-chronic-low-back-pain-a-case-control-study
#8
Shohreh Taghizadeh, Soraya Pirouzi, Ladan Hemmati, Fereshteh Khaledi, Aref Sadat
Objective: The purpose of this study was to investigate the position of scapula in patients with nonspecific chronic low back pain. Methods: A total of 17 participants with a history of nonspecific chronic low back pain and 17 healthy participants in the same age, sex, and weight range were enrolled in this case-control study. Lateral scapular slide test and Lennie test were used for clinical evaluation of scapular position in the frontal plane using a tape measure...
September 2017: Journal of Chiropractic Medicine
https://www.readbyqxmd.com/read/29095655/efficacy-of-a-prevention-program-for-medial-elbow-injuries-in-youth-baseball-players
#9
Jun Sakata, Emi Nakamura, Tatsuhiro Suzuki, Makoto Suzukawa, Atsushi Akaike, Kuniaki Shimizu, Norikazu Hirose
BACKGROUND: Youth baseball players are at high risk for elbow injuries, which can lead to future functional disability. PURPOSE: To evaluate the effectiveness of a prevention program to lower the risk of medial elbow injury in these athletes. STUDY DESIGN: Cohort study; Level of evidence, 2. METHODS: Youth baseball players, 8 to 11 years old, without a history of elbow and shoulder pain, were allocated to either the intervention (n = 136) or control (n = 169) group...
November 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29091287/image-acquisition-optimization-of-a-limited-angle-intrafraction-verification-live-system-for-lung-radiotherapy
#10
Yawei Zhang, Xinchen Deng, Fang-Fang Yin, Lei Ren
PURPOSE: LIVE has been previously developed for 4D intrafraction target verification either during arc delivery or between 3D/IMRT beams. Preliminary studies showed that LIVE can accurately estimate the target volume using kV/MV projections acquired over orthogonal-view 30° scan angles. Currently, the LIVE imaging acquisition requires slow gantry rotation and is not clinically optimized. The goal of this study is to optimize the image acquisition parameters of LIVE for different patient respiratory periods and gantry rotation speeds for the effective clinical implementation of the system...
November 1, 2017: Medical Physics
https://www.readbyqxmd.com/read/29069343/job-tasks-as-determinants-of-thoracic-aerosol-exposure-in-the-cement-production-industry
#11
Hilde Notø, Karl-Christian Nordby, Øivind Skare, Wijnand Eduard
Background: The aims of this study were to identify important determinants and investigate the variance components of thoracic aerosol exposure for the workers in the production departments of European cement plants. Methods: Personal thoracic aerosol measurements and questionnaire information (Notø et al., 2015) were the basis for this study. Determinants categorized in three levels were selected to describe the exposure relationships separately for the job types production, cleaning, maintenance, foreman, administration, laboratory, and other jobs by linear mixed models...
October 21, 2017: Annals of Work Exposures and Health
https://www.readbyqxmd.com/read/29060331/new-conducted-electrical-weapons-thoracic-cage-shielding-effects
#12
Dorin Panescu, Mark W Kroll, Michael A Brave
INTRODUCTION: The TASER® conducted electrical weapon (CEW) delivers electrical pulses that can temporarily incapacitate subjects. For existing CEW models, we have previously presented the distribution of currents in tissues posterior to the sternum and their likelihood of triggering cardiac arrhythmias. New models, the eXperimental Rotating-Field (XRF) waveform CEW (in development) and the X2 CEW (released) have not been investigated. Both the XRF and X2 CEWs target a precise amount of delivered charge per pulse, 64 μC and 62 μC, respectively...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29059123/implant-density-at-the-apex-is-more-important-than-overall-implant-density-for-3d-correction-in-thoracic-adolescent-idiopathic-scoliosis-using-rod-derotation-and-en-bloc-vertebral-derotation-technique
#13
Alexandre Delikaris, Xiaoyu Wang, Laure Boyer, A Noelle Larson, Charles G T Ledonio, Carl-Eric Aubin
STUDY DESIGN: Biomechanical analysis of 3D correction and bone-screw forces through numerical simulations of scoliosis instrumentation with different pedicle screw patterns. OBJECTIVE: To analyze the effect of different screw densities and distributions on 3D correction and bone-screw forces in adolescent idiopathic scoliosis (AIS) instrumentation. SUMMARY OF BACKGROUND DATA: Instrumentation constructs with various numbers of pedicle screws and patterns have been proposed for thoracic AIS instrumentation...
October 20, 2017: Spine
https://www.readbyqxmd.com/read/29050718/timing-of-changes-in-three-dimensional-spinal-parameters-after-selective-thoracic-fusion-in-lenke-1-adolescent-idiopathic-scoliosis-two-year-follow-up
#14
Saba Pasha, John M Flynn, Paul D Sponseller, Giuseppe Orlando, Peter O Newton, Patrick J Cahill
STUDY DESIGN: Retrospective analysis of the prospectively collected data. OBJECTIVE: To investigate the relationship between the axial rotation of the unfused lumbar spine and the parameters of the instrumented thoracic spine at varying time points after selective thoracic fusion (STF) in Lenke 1B and 1C adolescent idiopathic scoliosis (AIS). SUMMARY OF BACKGROUND DATA: The impact of STF on the spontaneous lumbar curve correction in AIS has been studied mainly in the frontal planes...
November 2017: Spine Deformity
https://www.readbyqxmd.com/read/29045358/evaluating-the-rotation-correction-of-the-main-thoracic-curve-in-severe-adolescent-idiopathic-scoliosis-bending-and-traction-vs-fulcrum-a-preliminary-report
#15
Qing-Jie Kong, Xiao-Fei Sun, Yuan Wang, Jing-Chuan Sun, Zi-Qiang Chen, Yong Yang, Jian-Gang Shi
BACKGROUND Flexibility evaluation methods were only used to assess the changes of coronal Cobb angle in patients with adolescent idiopathic scoliosis (AIS). Little attention was attached to the vertebral rotation in these methods. MATERIAL AND METHODS 21 patients with severe adolescent idiopathic scoliosis were enrolled in this study. Coronal flexibility and rotation correction were compared on the supine bending, traction and fulcrum bending radiographs. The apical vertebral body rib ratio (AVB-R), and Perdriolle rotation angles were used to measure the rotation of the main thoracic curve...
October 18, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29035924/rotational-therapy-in-thoracic-injuries-what-is-the-evidence
#16
Philipp Störmann, Ingo Marzi, Sebastian Wutzler
PURPOSE OF REVIEW: To review the current use of continuous lateral rotational therapy (CLRT) in patients with thoracic injuries and its impact on clinical course, complications and outcome. RECENT FINDINGS: Patient positioning is a key factor in the treatment of severe thoracic injuries and CLRT, and intermittent supine and prone position are basic options. There is a lack of randomized controlled studies for trauma patients with chest injury undergoing kinetic therapy as standard of care...
December 2017: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/29029957/a-model-based-approach-for-estimation-of-changes-in-lumbar-segmental-kinematics-associated-with-alterations-in-trunk-muscle-forces
#17
Iman Shojaei, Navid Arjmand, Judith R Meakin, Babak Bazrgari
The kinematics information from imaging, if combined with optimization-based biomechanical models, may provide a unique platform for personalized assessment of trunk muscle forces (TMFs). Such a method, however, is feasible only if differences in lumbar spine kinematics due to differences in TMFs can be captured by the current imaging techniques. A finite element model of the spine within an optimization procedure was used to estimate segmental kinematics of lumbar spine associated with five different sets of TMFs...
October 6, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28969897/current-status-of-endovascular-training-for-cardiothoracic-surgery-residents-in-the-united-states
#18
COMPARATIVE STUDY
Panos N Vardas, Ada C Stefanescu Schmidt, Xiaoying Lou, Andrew B Goldstone, Gregory Pattakos, Amy G Fiedler, Elizabeth H Stephens, Vakhtang Tchantchaleishvili
BACKGROUND: Endovascular interventions for cardiovascular pathology are becoming increasingly relevant to cardiothoracic surgery. This study assessed the perceived prevalence and efficacy of endovascular skills training and identified differences among training paradigms. METHODS: Trainee responses to questions in the 2016 In-Service Training Examination survey regarding endovascular training were analyzed based on the four different cardiothoracic surgery training pathways: traditional 2- and 3-year thoracic, integrated 6-year, and combined 4+3 general and thoracic residency programs...
November 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28969262/efficacy-of-task-oriented-exercise-program-based-on-ergonomics-on-cobb-s-angle-and-pulmonary-function-improvement-in-adolescent-idiopathic-scoliosis-a-randomized-control-trial
#19
Arvind Kumar, Santosh Kumar, Vineet Sharma, R N Srivastava, Anil Kumar Gupta, Anit Parihar, Vikas Verma, Dileep Kumar
INTRODUCTION: Scoliosis is lateral curvature of the spine greater than 100 accompanied by vertebral rotation. The prime risk factors for curve progression are a large curve magnitude, skeletal immaturity and female gender. The curve progression can be recorded by measuring the curve magnitude using the Cobb's method on radiographs. AIM: To assess the effect of task oriented exercises based on ergonomics on Cobb's angle and pulmonary functions on one year outcome of Adolescent Idiopathic Scoliosis(AIS) (defined as curves < 150 for thoracolumbar region and < 200 for thoracic region)...
August 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28956660/traumatic-axonal-injury-despite-clinical-phenotype-of-mild-traumatic-brain-injury-a-case-report
#20
Sung Ho Jang, Han Do Lee
OBJECTIVES: We report on a patient who suffered traumatic axonal injury (TAI) of various neural tracts despite airbag deployment following mild traumatic brain injury (TBI), which was demonstrated by diffusion tensor tractography (DTT). CASE DESCRIPTION: A 58-year-old female patient suffered from head trauma resulting from an in-car traffic accident. At the time of head trauma, her head and face hit the deployed airbag after flexion-hyperextension-rotation injury...
2017: Brain Injury: [BI]
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