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Tests and Measures Spine

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https://www.readbyqxmd.com/read/29336820/micro-ct-and-micro-fe-analysis-of-pedicle-screw-fixation-under-different-loading-conditions
#1
Y Chevalier, M Matsuura, S Krüger, C Fleege, M Rickert, M Rauschmann, C Schilling
Anchorage of pedicle screw instrumentation in the elderly spine with poor bone quality remains challenging. In this study, micro finite element (µFE) models were used to assess the specific influence of screw design and the relative contribution of local bone density to fixation mechanics. These were created from micro computer tomography (µCT) scans of vertebras implanted with two types of pedicle screws, including a full region-or-interest of 10 mm radius around each screw, as well as submodels for the pedicle and inner trabecular bone of the vertebral body...
December 26, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29332238/normal-variation-in-sagittal-spinal-alignment-parameters-in-adult-patients-an-eos-study-using-serial-imaging
#2
Hwee Weng Dennis Hey, Kian Loong Melvin Tan, Vikaesh Moorthy, Eugene Tze-Chun Lau, Leok-Lim Lau, Gabriel Liu, Hee-Kit Wong
PURPOSE: To describe normal variations in sagittal spinal radiographic parameters over an interval period and establish physiological norms and guidelines for which these images should be interpreted. METHODS: Data were prospectively collected from a continuous series of adult patients with first-episode mild low back pain presenting to a single institution. The sagittal parameters of two serial radiographic images taken 6-months apart were obtained with the EOS® slot scanner...
January 13, 2018: European Spine Journal
https://www.readbyqxmd.com/read/29330576/xipho-pubic-angle-xpa-correlates-with-patient-s-reported-outcomes-in-a-population-of-adult-spinal-deformity-results-from-a-multi-center-cohort-study
#3
Francesco Langella, Jorge Hugo Villafañe, Virginie Lafage, Justin S Smith, Christopher Shaffrey, Han Jo Kim, Douglas Burton, Richard Hostin, Shay Bess, Christopher Ames, Gregory Mundis, Eric Klineberg, Frank Schwab, Renault Lafage, Pedro Berjano
STUDY DESIGN: Retrospective multi-center cohort study. PURPOSE: Sagittal misalignment causes changes in the abdominal shape. Xipho-pubic angle (XPA) has been previously described to radiographically evaluate the shape of the abdominal cavity in patients with spine deformity. The aims of this study are to evaluate the correlation of XPA-to-spinopelvic sagittal parameters and to patients' health-related quality-of-life (HRQoL) scores. METHODS: 278 patients from a multi-center database with diagnosis adult spinal deformity (ASD) (one or more of: coronal Cobb angle > 20°, sagittal vertical axis (SVA) > 50 mm, pelvic tilt (PT) > 25°, and thoracic kyphosis > 60°) were included...
January 12, 2018: European Spine Journal
https://www.readbyqxmd.com/read/29326761/prevalence-rate-of-adolescent-idiopathic-scoliosis-results-of-school-based-screening-in-surabaya-indonesia
#4
I S Komang-Agung, S B Dwi-Purnomo, A Susilowati
Introduction: Scoliosis is a lateral spinal deformity of 10 degrees or more, resulting in a C-shaped or S-shaped curve of the spine. Information about adolescent idiopathic scoliosis (AIS) prevalence rate is important not only for paediatric health care planning strategy but also for parent's awareness. This study aims to find the suitable inclination cut-off angle and the prevalence rate of AIS in Surabaya, Indonesia. Materials and Methods: This is a descriptive cross-sectional study conducted in 2010. We performed stratified random sampling of 784 Elementary and Junior High School students in Surabaya between 9-16 years of age...
November 2017: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/29322310/relationship-between-sagittal-spinal-curves-geometry-and-isokinetic-trunk-muscle-strength-in-adults
#5
Walaa Elsayed, Ahmed Farrag, Qassim Muaidi, Nora Almulhim
PURPOSE: Sagittal spinal deviation has been reported to be a significant musculoskeletal problem affecting both genders and could develop at any age. Factors triggering this issue are still not well defined. The purpose of this study was to investigate the relationship between sagittal spine angles and isokinetic peak, average torque, and power of trunk muscles in asymptomatic adults. METHODS: A convenient sample of 79 subjects with asymptomatic spine participated in this study...
January 10, 2018: European Spine Journal
https://www.readbyqxmd.com/read/29319661/observed-length-increases-of-magnetically-controlled-growing-rods-are-lower-than-programmed
#6
Sarah E Gilday, Mark S Schwartz, Donita I Bylski-Austrow, David L Glos, Lindsay Schultz, Sara O'Hara, Viral V Jain, Peter F Sturm
BACKGROUND: Magnetically controlled growing rods (MCGRs) are increasingly used in the treatment of early onset scoliosis (EOS). Few studies have reported whether desired lengthening can reliably be achieved, or if prior spine instrumentation and large tissue depths affect lengthening. In this clinical study of EOS patients, it was hypothesized that increases in rod length would equal programmed increases, patients with prior spine instrumentation would lengthen less than patients without prior surgery, and larger tissue depths would decrease lengthening success...
January 9, 2018: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/29318167/a-comparison-of-cervical-spine-motion-after-immobilization-with-a-traditional-spine-board-and-full-body-vacuum-mattress-splint
#7
Brian E Etier, Grant E Norte, Megan M Gleason, Dustin L Richter, Kelli F Pugh, Keith B Thomson, Lindsay V Slater, Joe M Hart, Stephen F Brockmeier, David R Diduch
Background: The National Athletic Trainers' Association (NATA) advocates for cervical spine immobilization on a rigid board or vacuum splint and for removal of athletic equipment before transfer to an emergency medical facility. Purpose: To (1) compare triplanar cervical spine motion using motion capture between a traditional rigid spine board and a full-body vacuum splint in equipped and unequipped athletes, (2) assess cervical spine motion during the removal of a football helmet and shoulder pads, and (3) evaluate the effect of body mass on cervical spine motion...
December 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29317680/exome-wide-rare-variant-analyses-of-two-bone-mineral-density-phenotypes-the-challenges-of-analyzing-rare-genetic-variation
#8
Jianping Sun, Karim Oualkacha, Vincenzo Forgetta, Hou-Feng Zheng, J Brent Richards, Daniel S Evans, Eric Orwoll, Celia M T Greenwood
Performance of a recently developed test for association between multivariate phenotypes and sets of genetic variants (MURAT) is demonstrated using measures of bone mineral density (BMD). By combining individual-level whole genome sequenced data from the UK10K study, and imputed genome-wide genetic data on individuals from the Study of Osteoporotic Fractures (SOF) and the Osteoporotic Fractures in Men Study (MrOS), a data set of 8810 individuals was assembled; tests of association were performed between autosomal gene-sets of genetic variants and BMD measured at lumbar spine and femoral neck...
January 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29315315/quantification-of-intramuscular-fat-in-patients-with-late-onset-pompe-disease-by-conventional-magnetic-resonance-imaging-for-the-long-term-follow-up-of-enzyme-replacement-therapy
#9
André Lollert, Clemens Stihl, Andreas M Hötker, Eugen Mengel, Jochem König, Katharina Laudemann, Seyfullah Gökce, Christoph Düber, Gundula Staatz
OBJECTIVE: The objective of this study was to evaluate a quantitative method based on conventional T1-weighted magnetic resonance (MR) imaging to assess fatty muscular degeneration in patients with late-onset Pompe disease and to compare it with semi-quantitative visual evaluation (the Mercuri score). In addition, a long-term retrospective data analysis was performed to evaluate treatment response to enzyme replacement therapy with alglucosidase alfa. METHODS: MR images of the lumbar spine were acquired in 41 patients diagnosed with late-onset Pompe disease from 2006 through 2015...
2018: PloS One
https://www.readbyqxmd.com/read/29310418/improvements-in-osteoporosis-testing-and-care-are-found-following-the-wide-scale-implementation-of-the-ontario-fracture-clinic-screening-program-an-interrupted-time-series-analysis
#10
Dorcas E Beaton, Muhammad Mamdani, Hong Zheng, Susan Jaglal, Suzanne M Cadarette, Earl R Bogoch, Joanna E M Sale, Rebeka Sujic, Ravi Jain
We evaluated a system-wide impact of a health intervention to improve treatment of osteoporosis after a fragility fracture. The intervention consisted of assigning a screening coordinator to selected fracture clinics to identify, educate, and follow up with fragility fracture patients and inform their physicians of the need to evaluate bone health. Thirty-seven hospitals in the province of Ontario (Canada) were assigned a screening coordinator. Twenty-three similar hospitals were control sites. All hospitals had orthopedic services and handled moderate-to-higher volumes of fracture patients...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29310322/effect-of-training-in-advanced-trauma-life-support-on-the-kinematics-of-the-spine-a-simulation-study
#11
Raquel Gordillo Martin, Pedro E Alcaráz, Laura Juguera Rodriguez, Antonio Nieto Fernandez-Pacheco, Elena Marín-Cascales, Tomás T Freitas, Manuel Pardo Rios
More than 7.5 million people in the world are affected by spinal cord injury (SCI). In this study, we aimed to analyze the effect of training in advanced trauma life support (ATLS) on the kinematics of the spine when performing different mobilization and immobilization techniques on patients with suspected SCI. A quasi-experimental study, clinical simulation, was carried out to determine the effect of training in ATLS on 32 students enrolled in the Master's program of Emergency and Special Care Nursing. The evaluation was performed through 2 maneuvers: placing of the scoop stretcher (SS) and spinal board (SB), with an actor who simulated a clinical situation of suspected spinal injury...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29304378/life-course-genome-wide-association-study-meta-analysis-of-total-body-bmd-and-assessment-of-age-specific-effects
#12
Carolina Medina-Gomez, John P Kemp, Katerina Trajanoska, Jian'an Luan, Alessandra Chesi, Tarunveer S Ahluwalia, Dennis O Mook-Kanamori, Annelies Ham, Fernando P Hartwig, Daniel S Evans, Raimo Joro, Ivana Nedeljkovic, Hou-Feng Zheng, Kun Zhu, Mustafa Atalay, Ching-Ti Liu, Maria Nethander, Linda Broer, Gudmar Porleifsson, Benjamin H Mullin, Samuel K Handelman, Mike A Nalls, Leon E Jessen, Denise H M Heppe, J Brent Richards, Carol Wang, Bo Chawes, Katharina E Schraut, Najaf Amin, Nick Wareham, David Karasik, Nathalie Van der Velde, M Arfan Ikram, Babette S Zemel, Yanhua Zhou, Christian J Carlsson, Yongmei Liu, Fiona E McGuigan, Cindy G Boer, Klaus Bønnelykke, Stuart H Ralston, John A Robbins, John P Walsh, M Carola Zillikens, Claudia Langenberg, Ruifang Li-Gao, Frances M K Williams, Tamara B Harris, Kristina Akesson, Rebecca D Jackson, Gunnar Sigurdsson, Martin den Heijer, Bram C J van der Eerden, Jeroen van de Peppel, Timothy D Spector, Craig Pennell, Bernardo L Horta, Janine F Felix, Jing Hua Zhao, Scott G Wilson, Renée de Mutsert, Hans Bisgaard, Unnur Styrkársdóttir, Vincent W Jaddoe, Eric Orwoll, Timo A Lakka, Robert Scott, Struan F A Grant, Mattias Lorentzon, Cornelia M van Duijn, James F Wilson, Kari Stefansson, Bruce M Psaty, Douglas P Kiel, Claes Ohlsson, Evangelia Ntzani, Andre J van Wijnen, Vincenzo Forgetta, Mohsen Ghanbari, John G Logan, Graham R Williams, J H Duncan Bassett, Peter I Croucher, Evangelos Evangelou, Andre G Uitterlinden, Cheryl L Ackert-Bicknell, Jonathan H Tobias, David M Evans, Fernando Rivadeneira
Bone mineral density (BMD) assessed by DXA is used to evaluate bone health. In children, total body (TB) measurements are commonly used; in older individuals, BMD at the lumbar spine (LS) and femoral neck (FN) is used to diagnose osteoporosis. To date, genetic variants in more than 60 loci have been identified as associated with BMD. To investigate the genetic determinants of TB-BMD variation along the life course and test for age-specific effects, we performed a meta-analysis of 30 genome-wide association studies (GWASs) of TB-BMD including 66,628 individuals overall and divided across five age strata, each spanning 15 years...
January 4, 2018: American Journal of Human Genetics
https://www.readbyqxmd.com/read/29304151/the-role-of-carboxy-terminal-cross-linking-telopeptide-of-type-i-collagen-dual-x-ray-absorptiometry-bone-strain-and-romberg-test-in-a-new-osteoporotic-fracture-risk-evaluation-a-proposal-from-an-observational-study
#13
Fabio M Ulivieri, Luca P Piodi, Enzo Grossi, Luca Rinaudo, Carmelo Messina, Anna P Tassi, Marcello Filopanti, Anna Tirelli, Francesco Sardanelli
The consolidated way of diagnosing and treating osteoporosis in order to prevent fragility fractures has recently been questioned by some papers, which complained of overdiagnosis and consequent overtreatment of this pathology with underestimating other causes of the fragility fractures, like falls. A new clinical approach is proposed for identifying the subgroup of patients prone to fragility fractures. This retrospective observational study was conducted from January to June 2015 at the Nuclear Medicine-Bone Metabolic Unit of the of the Fondazione IRCCS Ca' Granda, Milan, Italy...
2018: PloS One
https://www.readbyqxmd.com/read/29303472/biomechanics-of-unilateral-and-bilateral-sacroiliac-joint-stabilization-laboratory-investigation
#14
Derek P Lindsey, Robin Parrish, Mukund Gundanna, Jeremi Leasure, Scott A Yerby, Dimitriy Kondrashov
OBJECTIVE Bilateral symptoms have been reported in 8%-35% of patients with sacroiliac (SI) joint dysfunction. Stabilization of a single SI joint may significantly alter the stresses on the contralateral SI joint. If the contralateral SI joint stresses are significantly increased, degeneration may occur; alternatively, if the stresses are significantly reduced, bilateral stabilization may be unnecessary for patients with bilateral symptoms. The biomechanical effects of 1) unilateral stabilization on the contralateral SI joint and 2) bilateral stabilization on both SI joints are currently unknown...
January 5, 2018: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29303468/validation-of-patient-reported-outcomes-measurement-information-system-promis-computerized-adaptive-tests-in-cervical-spine-surgery
#15
Barrett S Boody, Surabhi Bhatt, Aditya S Mazmudar, Wellington K Hsu, Nan E Rothrock, Alpesh A Patel
OBJECTIVE The Patient-Reported Outcomes Measurement Information System (PROMIS), which is funded by the National Institutes of Health, is a set of adaptive, responsive assessment tools that measures patient-reported health status. PROMIS measures have not been validated for surgical patients with cervical spine disorders. The objective of this project is to evaluate the validity (e.g., convergent validity, known-groups validity, responsiveness to change) of PROMIS computer adaptive tests (CATs) for pain behavior, pain interference, and physical function in patients undergoing cervical spine surgery...
January 5, 2018: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29290134/minimally-invasive-anterior-and-lateral-transpsoas-approaches-for-closed-reduction-of-grade-ii-spondylolisthesis-initial-clinical-and-radiographic-experience
#16
David S Xu, Konrad Bach, Juan S Uribe
OBJECTIVE Minimally invasive anterior and lateral approaches to the lumbar spine are increasingly used to treat and reduce grade I spondylolisthesis, but concerns still exist for their usage in the management of higher-grade lesions. The authors report their experience with this strategy for grade II spondylolisthesis in a single-surgeon case series and provide early clinical and radiographic outcomes. METHODS A retrospective review of a single surgeon's cases between 2012 and 2016 identified all patients with a Meyerding grade II lumbar spondylolisthesis who underwent minimally invasive lateral lumbar interbody fusion (LLIF) or anterior lumbar interbody fusion (ALIF) targeting the slipped level...
January 2018: Neurosurgical Focus
https://www.readbyqxmd.com/read/29290026/trabecular-bone-quality-is-lower-in-adults-with-type-1-diabetes-and-is-negatively-associated-with-insulin-resistance
#17
V N Shah, R Sippl, P Joshee, L Pyle, W M Kohrt, I E Schauer, J K Snell-Bergeon
We evaluated trabecular bone score (TBS) and factors affecting TBS in adults with type 1 diabetes (T1D) compared to age-, sex-, and body mass index (BMI)-matched adults without diabetes. Adults with T1D had lower TBS compared to controls. Abdominal obesity and insulin resistance are associated with lower TBS. INTRODUCTION: We evaluated TBS, a non-invasive method to evaluate trabecular bone quality at the lumbar spine, in adults with T1D compared to age-, sex-, and BMI-matched adults without diabetes...
December 30, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/29287746/the-importance-of-data-structure-in-statistical-analysis-of-dendritic-spine-morphology
#18
Veerle Paternoster, Anto P Rajkumar, Jens Randel Nyengaard, Anders Dupont Børglum, Jakob Grove, Jane Hvarregaard Christensen
BACKGROUND: Dendritic spine morphology is heterogeneous and highly dynamic. To study the changing or aberrant morphology in test setups, often spines from several neurons from a few experimental units e.g. mice or primary neuronal cultures are measured. This strategy results in a multilevel data structure, which, when not properly addressed, has a high risk of producing false positive and false negative findings. METHODS: We used mixed-effects models to deal with data with a multilevel data structure and compared this method to analyses at each level...
December 26, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/29284446/management-of-whiplash-associated-disorders-in-australian-general-practice
#19
Jane Nikles, Michael Yelland, Clare Bayram, Graeme Miller, Michele Sterling
BACKGROUND: Whiplash Associated Disorders (WAD) are common and costly, and are usually managed initially by general practitioners (GPs). How GPs manage WAD is largely unstudied, though there are clinical guidelines. Our aim was to ascertain the rate of management (percentage of encounters) of WAD among patients attending Australian general practice, and to review management of these problems, including imaging, medications and other treatments. METHODS: We analysed data from 2013 to 2016 collected by different random samples of approximately 1000 general practitioners (GPs) per year...
December 29, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29281150/to-distinguish-flexible-and-rigid-lumbar-curve-from-mri-texture-analysis-in-adolescent-idiopathic-scoliosis-a-feasibility-study
#20
Claudia Chevrefils, Delphine Périé, Stefan Parent, Farida Cheriet
BACKGROUND: Imaging in side bending, supine, traction, fulcrum, and push prone are examples of methods used to evaluate the curve reduction of scoliotic spine. However, being able to determine spine curve flexibility from MRI would eliminate the need of additional X-ray radiation related to radiograph acquisition in side-bending. PURPOSE/HYPOTHESIS: To find specific texture features of lumbar postural muscles on MRI that can distinguish flexible from rigid lumbar scoliotic curves...
December 27, 2017: Journal of Magnetic Resonance Imaging: JMRI
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