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Tests and Measures Spine

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https://www.readbyqxmd.com/read/29150661/morphological-differentiation-of-brachionus-calyciflorus-caused-by-predation-and-coal-ash-pollution
#1
Ying-Hao Xue, Xiao-Xue Yang, Gen Zhang, Yi-Long Xi
Different rotifer stains exhibited remarkably morphological differences which could not be eliminated under laboratory conditions. In the present study, we hypothesized that predation pressure and pollution might be two forces driving morphological differentiation of rotifer. To test this hypothesis, rotifers (Brachionus calyciflorus) belonging to two sibling species were collected from three special lakes (with coal ash pollution, high predation pressure or neither) and cultured for more than three months to investigate their potential differentiation in morphology...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29145877/trajectory-of-instantaneous-axis-of-rotation-in-fixed-lumbar-spine-with-instrumentation
#2
Masataka Inoue, Tetsutaro Mizuno, Toshihiko Sakakibara, Takaya Kato, Takamasa Yoshikawa, Tadashi Inaba, Yuichi Kasai
BACKGROUND: Several studies showed instantaneous axis of rotation (IAR) in the intact spine. However, there has been no report on the trajectory of the IAR of a damaged spine or that of a fixed spine with instrumentation. It is the aim of this study to investigate the trajectory of the IAR of the lumbar spine using the vertebra of deer. METHODS: Functional spinal units (L5-6) from five deer were evaluated with six-axis material testing machine. As specimen models, we prepared a normal model, a damaged model, and a pedicle screw (PS) model...
November 16, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29143131/vertebral-fractures-and-their-association-with-health-related-quality-of-life-back-pain-and-physical-function-in-older-women
#3
Lisa Johansson, Daniel Sundh, Martin Nilsson, Dan Mellström, Mattias Lorentzon
Studies investigating prevalent vertebral fracture (VF) diagnosed using densitometry-based VF assessment (VFA) and associations with physical function, assessed by performance-based measures, are lacking. In this population-based study of 1027 older women, we found that prevalent VF, identified by VFA, was associated with inferior physical health, back pain and inferior physical function. PURPOSE: Several studies have investigated the associations between health-related quality of life (HRQL) and back pain with prevalent VF, detected by spine radiographs, but just a few have been population-based and have used vertebral fracture assessment (VFA) for diagnosing VF...
November 15, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/29135458/immediate-effects-of-osteopathic-treatment-versus-therapeutic-exercise-on-patients-with-chronic-cervical-pain
#4
Xabier Galindez-Ibarbengoetxea, Igor Setuain, Robinson Ramírez-Velez, Lars L Andersen, Miriam González-Izal, Andoni Jauregi, Mikel Izquierdo
Context • Alternatives to medication for immediate pain relief are needed because long-term use of pain medication has been associated with adverse effects. High-velocity, low-amplitude (HVLA) manipulation techniques (MTs) and craniocervical flexion (CCF) exercises have been frequently used in the management of chronic cervical pain. Objective • The study intended to compare the immediate effects on pain of a treatment using HVLA manipulation versus one using a CCF exercise protocol. Design • The research team designed a single-blinded, randomized clinical trial...
November 14, 2017: Alternative Therapies in Health and Medicine
https://www.readbyqxmd.com/read/29128293/test-retest-reliability-of-sit-to-stand-and-stand-to-sit-analysis-in-people-with-and-without-chronic-non-specific-low-back-pain
#5
Mohammad Reza Pourahmadi, Ismail Ebrahimi Takamjani, Shapour Jaberzadeh, Javad Sarrafzadeh, Mohammad Ali Sanjari, Rasool Bagheri, Elham Jannati
BACKGROUND: Sit-to-stand (STD) and stand-to-sit (SIT) analysis can provide information on functional independence in daily activities in patients with low back pain (LBP). However, in order for measurements to be clinically useful, data on psychometric properties should be available. OBJECTIVES: The main purpose was to investigate intra-rater reliability of STD and SIT tasks in participants with and without chronic non-specific LBP (CNLBP). The second purpose was to detect any differences in lumbar spine and hips sagittal plane kinematics and coordination between asymptomatic individuals and CNLBP patients during STD and SIT...
November 6, 2017: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/29124300/xanthoceraside-modulates-nr2b-containing-nmda-receptors-at-synapses-and-rescues-learning-memory-deficits-in-app-ps1-transgenic-mice
#6
Lin Zhu, Lei Yang, Xuemei Zhao, Danyang Liu, Xiaoli Guo, Peng Liu, Tianyan Chi, Xuefei Ji, Libo Zou
RATIONALE: Alzheimer's disease (AD) is characterized by memory loss and synaptic damage. Previous studies suggested that xanthoceraside decreases glutamate-induced PC12 cell death, ameliorates memory deficits, and increases the number of dendritic spines in AD mice. These results indicated that xanthoceraside might have activities that protect synaptic plasticity. Herein, we detected the effect of xanthoceraside on synaptic function. MATERIALS AND METHODS: Three-month-old APP/PS1 transgenic mice were orally treated with xanthoceraside (0...
November 9, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/29122701/predictors-of-quality-of-life-improvement-after-surgery-for-metastatic-tumors-of-the-spine-prospective-cohort-study
#7
Ori Barzilai, Lily McLaughlin, Mary-Kate Amato, Anne S Reiner, Shahiba Q Ogilvie, Eric Lis, Yoshiya Yamada, Mark H Bilsky, Ilya Laufer
BACKGROUND CONTEXT: Surgical decompression and stabilization followed by radiosurgery represents an effective method for local tumor control and neurologic preservation for patients with metastatic epidural spinal cord compression. We have previously demonstrated improvement in HrQOL after this combined modality treatment ("hybrid therapy"). PURPOSE: The current analysis focuses on delineation of patient-specific prognostic factors predictive of HrQOL change after combined surgery-SRS treatment of MESCC...
November 6, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29121821/morphometric-study-of-the-orientation-of-lumbar-zygapophyseal-joints-in-a-south-indian-population
#8
S P Mohanty, Madhava Pai Kanhangad, Siddarth Kamath, Asha Kamath
PURPOSE: To determine the orientation of lumbar zygapophyseal joints and prevalence of facet tropism (FT) identified by computerized tomographic (CT) scans. METHODS: In a cross-sectional study, 124 CT scans of patients with spinal injuries, seen between 2011and 2015, were retrospectively studied. A total of 566 uninjured motion segments were analysed. The right and left zygapophyseal joint angles (ZJAs) from L1-L2 to L5-S1 were measured on axial sections at uninjured levels...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29115684/bone-material-strength-index-as-measured-by-impact-microindentation-in-postmenopausal-women-with-distal-radius-and-hip-fractures
#9
Tamara D Rozental, Kempland C Walley, Serkalem Demissie, Signe Caksa, Adriana Martinez-Betancourt, Amber M Parker, Joy N Tsai, Elaine W Yu, Mary L Bouxsein
We tested whether cortical bone tissue properties assessed by in vivo impact microindentation would distinguish postmenopausal women with recent distal radius (DRF) or hip fracture (HF) from non-fracture controls (CONT). We enrolled postmenopausal women with recent DRF (n=57), HF (n=41) or CONT (n=93), and used impact microindentation to assess bone material strength index (BMSi) at the anterior surface of the mid-tibia diaphysis. Areal BMD (g/cm(2) ) of the femoral neck (FN), total hip (TH) and lumbar spine (LS) were measured by dual-energy X-ray absorptiometry (DXA)...
November 8, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29106896/the-rib-cage-reduces-intervertebral-disc-pressures-in-cadaveric-thoracic-spines-by-sharing-loading-under-applied-dynamic-moments
#10
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/29106655/pathological-movements-of-the-pelvis-and-trunk-during-gait-in-children-with-cerebral-palsy-a-cross-sectional-study-with-3-dimensional-kinematics-and-lower-lumbar-spinal-loading
#11
Damien Kiernan, Rory O'Sullivan, Ailish Malone, Timothy O'Brien, Ciaran K Simms
Background: Increased loading at the lumbar spine, particularly in the coronal plane, has been reported in children with cerebral palsy (CP). As pelvic and trunk movements associated with Trendelenburg and Duchenne type gait are most significant in the coronal plane, the potential exists for lower lumbar spinal loading to be negatively affected in children with CP and these types of movement patterns. Objective: The objective of this study was to assess trunk and pelvic kinematics and lower lumbar spinal loading patterns in children with CP and Trendelenburg and Duchenne type gait...
November 2, 2017: Physical Therapy
https://www.readbyqxmd.com/read/29096979/patient-reported-outcomes-measurement-information-system-and-legacy-patient-reported-outcome-measures-in-the-field-of-orthopaedics-a-systematic-review
#12
REVIEW
Mohsin S Fidai, Bryan M Saltzman, Fabien Meta, Vincent A Lizzio, Jeffrey P Stephens, Kevin J Bozic, Eric C Makhni
PURPOSE: To compare Patient-Reported Outcomes Measurement Information System (PROMIS) physical function (PF) with legacy patient-reported outcome measures with regard to correlations, ease of use, and quality criteria for orthopaedic conditions. METHODS: A systematic search of the PubMed/MEDLINE database was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines to identify published articles that referenced the various PROMIS PF measures...
October 30, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29096273/effects-of-chemical-castration-using-20-cacl2-with-0-5-dmso-in-tomcats-evaluation-of-inflammatory-reaction-by-infrared-thermography-and-effectiveness-of-treatment
#13
Cristiane Sella Paranzini, Anne Kemmer Sousa, Guilherme Schiess Cardoso, Felipe Montanheiro Perencin, Luiz Guilherme Corsi Trautwein, Ana Paula Frederico Rodrigues Loureiro Bracarense, Maria Isabel Mello Martins
This study used infrared thermography to monitor the immediate inflammatory reaction to an intratesticular injection of 20% (calcium chloride) CaCl2 with 0.5% dimethyl sulfoxide (DMSO) for chemical castration and to provide evidence of the treatment's clinical viability. Six animals received a 0.25 mL intratesticular injection of 20% CaCl2 with 0.5% DMSO in each testis. Thermographic imaging, testicular measurement, penile spine evaluation, electroejaculation, and sperm analysis were performed before the injection...
October 21, 2017: Theriogenology
https://www.readbyqxmd.com/read/29090368/changes-in-the-midpalatal-and-pterygopalatine-sutures-induced-by-micro-implant-supported-skeletal-expander-analyzed-with-a-novel-3d-method-based-on-cbct-imaging
#14
Daniele Cantarella, Ramon Dominguez-Mompell, Sanjay M Mallya, Christoph Moschik, Hsin Chuan Pan, Joseph Miller, Won Moon
BACKGROUND: Mini-implant-assisted rapid palatal expansion (MARPE) appliances have been developed with the aim to enhance the orthopedic effect induced by rapid maxillary expansion (RME). Maxillary Skeletal Expander (MSE) is a particular type of MARPE appliance characterized by the presence of four mini-implants positioned in the posterior part of the palate with bi-cortical engagement. The aim of the present study is to evaluate the MSE effects on the midpalatal and pterygopalatine sutures in late adolescents, using high-resolution CBCT...
November 1, 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/29068880/quantitative-magnetization-transfer-mri-measurements-of-the-anterior-spinal-cord-region-are-associated-with-clinical-outcomes-in-cervical-spondylotic-myelopathy
#15
Michael Brendan Cloney, Zachary A Smith, Kenneth A Weber, Todd B Parrish
STUDY DESIGN: case-control. OBJECTIVE: To understand the role of magnetization transfer ratio in identifying patients with clinically significant myelopathy and disability. SUMMARY OF BACKGROUND DATA: Magnetization transfer ratio (MTR) is a quantitative measure that correlates with myelin loss and neural tissue destruction in a variety of neurological diseases. However, the usefulness of MTR in patients with cervical spondylotic myelopathy (CSM) has not been examined...
October 24, 2017: Spine
https://www.readbyqxmd.com/read/29065144/substantial-vertebral-body-osteophytes-protect-against-severe-vertebral-fractures-in-compression
#16
Eric Wagnac, Carl-Éric Aubin, Kathia Chaumoître, Jean-Marc Mac-Thiong, Anne-Laure Ménard, Yvan Petit, Anaïs Garo, Pierre-Jean Arnoux
Recent findings suggest that vertebral osteophytes increase the resistance of the spine to compression. However, the role of vertebral osteophytes on the biomechanical response of the spine under fast dynamic compression, up to failure, is unclear. Seventeen human spine specimens composed of three vertebrae (from T5-T7 to T11-L1) and their surrounding soft tissues were harvested from nine cadavers, aged 77 to 92 years. Specimens were imaged using quantitative computer tomography (QCT) for medical observation, classification of the intervertebral disc degeneration (Thomson grade) and measurement of the vertebral trabecular density (VTD), height and cross-sectional area...
2017: PloS One
https://www.readbyqxmd.com/read/29059193/safe-corridor-for-the-implantation-of-thoracolumbar-pedicle-screws-in-growing-pigs-a-morphometric-study
#17
Thibaut Cachon, Paul Pillard, Thierry Odent, Claude Carozzo, Eric Viguier
The pig spine is widely used as a large animal model for preclinical research in human medicine to test new spinal implants and surgical procedures. Among them, pedicle screw is one of the most common method of fixation of those implants. However, the pedicle of the porcine vertebra is not as well defined and not as large as the pedicle of the human vertebra. Therefore, the position of the screw should be adapted to the pig and not merely transposed based on the literature on humans. The purpose of this study is to determine the characteristics of the optimum implantation corridors for pedicle screws in the thoracolumbar spine of piglets of different ages using computed tomography (CT) and to determine the size and length of these corridors in pigs of different ages...
2017: PloS One
https://www.readbyqxmd.com/read/29058178/developmental-exposure-to-the-ssri-citalopram-causes-long-lasting-behavioural-effects-in-the-three-spined-stickleback-gasterosteus-aculeatus
#18
M Kellner, T Porseryd, I Porsch-Hällström, B Borg, C Roufidou, K H Olsén
Selective Serotonin re-uptake inhibitors (SSRIs) are a class of psychotropic drugs used to treat depression in both adolescents and pregnant or breast-feeding mothers as well as in the general population. Recent research on rodents points to long-lasting behavioural effects of pre- and perinatal exposure to SSRIs which last into adulthood. In fish however, studies on effects of developmental exposure to SSRIs appears to be non-existent. In order to study effects of developmental SSRI exposure in fish, three-spine sticklebacks were exposed to 1...
October 23, 2017: Ecotoxicology
https://www.readbyqxmd.com/read/29056566/a-reliability-and-validity-study-for-different-coronal-angles-using-ultrasound-imaging-in-adolescent-idiopathic-scoliosis
#19
Rob C Brink, Sebastiaan P J Wijdicks, Isabel N Tromp, Tom P C Schlösser, Moyo C Kruyt, Frederik J A Beek, René M Castelein
BACKGROUND CONTEXT: Radiation exposure remains a big concern in adolescent idiopathic scoliosis (AIS). Ultrasound imaging of the spine could significantly reduce or possibly even eliminate this radiation hazard. The spinous processes (SP) and transverse processes (TP), were used to measure the coronal deformity. Both landmarks provided reliable information on the severity of the curve as related to the traditional Cobb angle. However, it remained unclear which coronal ultrasound angle is the most appropriate method to measure the curve severity...
October 19, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29055741/radiologically-defining-horizontal-gaze-using-eos%C3%A2-imaging-a-prospective-study-of-healthy-subjects-and-a-retrospective-audit
#20
Hwee Weng Dennis Hey, Kimberly-Anne Tan, Vivienne Chien-Lin Ho, Syifa Bte Azhar, Joel-Louis Lim, Gabriel Ka-Po Liu, Hee-Kit Wong
Background Context As sagittal alignment of the cervical spine is important for maintaining horizontal gaze, it is important to determine the former for surgical correction. However, horizontal gaze remains poorly-defined from a radiological point-of-view. Purpose To establish radiographic criteria to define horizontal gaze. Study design/Setting This study was conducted at a tertiary healthcare institution over a 1-month period. Patient Sample A prospective cohort of healthy patients was used to determine the best radiological criteria for defining horizontal gaze...
October 18, 2017: Spine Journal: Official Journal of the North American Spine Society
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