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https://www.readbyqxmd.com/read/29232355/proximal-junctional-kyphosis-inter-and-intraobserver-reliability-of-radiographic-measurements-in-adult-spinal-deformity
#1
Farbod Rastegar, Alec Contag, Alan Daniels, Jayme Hiratzka, Clifford Lin, Jason Chang, Khoi Than, Ahmed Raslan, Christopher Kong, Ngoc-Lam Nguyen, Richard Hostin, Marie Kane, Robert A Hart
STUDY DESIGN: Reliability study of radiographic measures of proximal junctional kyphosis (PJK) in patients with adult spinal deformity (ASD). OBJECTIVE: To assess impacts of level of proximal endpoint and vertebral fracture on reliability of measurement of junctional kyphosis. SUMMARY OF BACKGROUND DATA: Radiographic assessment is important in determining management of patients with PJK or proximal junctional failure (PJF). No study to date has evaluated the reliability of radiographic measurement of the junctional kyphotic angle after surgery for ASD...
January 1, 2018: Spine
https://www.readbyqxmd.com/read/29232030/reproducibility-of-relaxometry-of-human-lumbar-vertebrae-at-3-tesla-using-1-h-mr-spectroscopy
#2
Bernhard Neumayer, Thomas Widek, Rudolf Stollberger, Eva Scheurer
BACKGROUND: MR spectroscopy is widely used for fat fraction quantification of human lumbar vertebrae. However, the measurements need to be corrected for relaxation effects. PURPOSE: The aim of this study was to determine the reproducibility of relaxometry in human lumbar vertebrae required for the correction of fat fraction measurements using magnetic resonance spectroscopy at 3 Tesla. Such information provides error estimates and guidance regarding reliability for future studies...
December 12, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29231592/-ultrasonic-imaging-research-at-ashi-points-in-neck-type-cervical-spondylosis
#3
Xiaoming Wu, Fengwei Tian, Zhaopeng Xie, Guifang Dong, Jianjun Li, Xi Zhou
OBJECTIVE: To conduct the preliminary positioning and qualitative research of high-frequency ultrasonic imaging at Ashi points (including tender points and trigger points) in neck-type cervical spondylosis and explore the relevant law so as to provide the evidence for the selection of acupuncture scheme. METHODS: Thirty patients in compliance with the diagnostic criteria of neck-type cervical spondylosis were selected. The trigger points, tender points and placebo points were positioned on any of the three available oriented lines...
April 12, 2017: Zhongguo Zhen Jiu, Chinese Acupuncture & Moxibustion
https://www.readbyqxmd.com/read/29231345/-research-progress-of-shenshu-bl-23
#4
Shan Gao, Rui Li, Huanhuan Tian
In order to accurately understand the location of Shenshu (BL 23) and to improve the efficacy of acupuncture, a discussion is performed in this paper from aspects of acupoint function, anatomical structure, experiment research, clinical application, etc., hoping to provide benefit for future animal experiments and clinical selection of acupoint. The characteristics of rat spine is different from that of human, and the reliability and authenticity of acupoint location would be compromised if the anatomical characteristics of human was inflexibly applied on animals...
August 12, 2017: Zhongguo Zhen Jiu, Chinese Acupuncture & Moxibustion
https://www.readbyqxmd.com/read/29231159/facet-joint-injections-for-non-specific-low-back-pain-a-feasibility-rct
#5
Saowarat Snidvongs, Rod S Taylor, Alia Ahmad, Simon Thomson, Manohar Sharma, Angela Farr, Deborah Fitzsimmons, Stephanie Poulton, Vivek Mehta, Richard Langford
BACKGROUND: Pain of lumbar facet-joint origin is a common cause of low back pain in adults and may lead to chronic pain and disability, with associated health and socioeconomic implications. The socioeconomic burden includes an inability to return to work resulting in loss of productivity in addition to direct and indirect health-care utilisation costs. Lumbar facet-joints are paired synovial joints between the superior and inferior articular processes of consecutive lumbar vertebrae and between the fifth lumbar vertebra and the sacrum...
December 2017: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/29231002/-relationship-between-electrical-conductivity-and-decomposition-rate-of-rat-postmortem-skeletal-muscle
#6
Z Y Xia, X D Zhai, B B Liu, Z Zheng, L L Zhao, Y N Mo
OBJECTIVES: To analyze the relationship among electrical conductivity (EC), total volatile basic nitrogen (TVB-N), which is an index of decomposition rate for meat production, and postmortem interval (PMI). To explore the feasibility of EC as an index of cadaveric skeletal muscle decomposition rate and lay the foundation for PMI estimation. METHODS: Healthy Sprague-Dawley rats were sacrificed by cervical vertebrae dislocation and kept at 28 ℃. Muscle of rear limbs was removed at different PMI, homogenized in deionized water and then skeletal extraction liquid of mass concentration 0...
February 2017: Fa Yi Xue za Zhi
https://www.readbyqxmd.com/read/29230985/-adult-stature-estimation-by-multiple-parameters-of-body-torso-segment
#7
R Q Wu, T Wang, Q Shi, B Xiao, K J Ma, X Chen
OBJECTIVES: To promote the further research on body stature estimation and the innovative applications based on the distances between the anatomical landmarks on body torso surface. METHODS: A specification for the collection of distances between the anatomical landmarks on body torso surface was established. The data of 933 cases of adult population in Yangtze River Delta region were collected. Multiple linear regression method was used to statistical analyse and establish the regression equation of stature estimation...
June 2017: Fa Yi Xue za Zhi
https://www.readbyqxmd.com/read/29230608/combinatorial-therapy-with-two-pro-coagulants-and-one-osmotic-agent-reduces-the-extent-of-the-lesion-in-the-acute-phase-of-spinal-cord-injury-in-the-rat
#8
Mathieu Boutonnet, Elisabeth Laemmel, Eric Vicaut, Jacques Duranteau, Marc Soubeyrand
BACKGROUND: Spinal cord injury (SCI) is a complex disease that leads to a motor, sensitive, and vegetative impairment. So far, single therapies are ineffective for treating SCI in humans and a multifactorial therapeutic approach may be required. The aim of this work was to assess the effect of a triple therapy (TT) associating two pro-coagulant therapies (tranexamic acid and fibrinogen) with an anti-edema therapy (hypertonic saline solution), on the extent of the lesion 24 h post-injury...
December 11, 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/29229438/pulsed-electromagnetic-fields-pemf-attenuate-changes-in-vertebral-bone-mass-architecture-and-strength-in-ovariectomized-mice
#9
Tao Lei, Zhuowen Liang, Feijiang Li, Chi Tang, Kangning Xie, Pan Wang, Xu Dong, Shuai Shan, Maogang Jiang, Qiaoling Xu, Erping Luo, Guanghao Shen
Pulsed electromagnetic fields (PEMF) has been investigated as a noninvasive alternative method to prevent bone loss for postmenopausal osteoporosis (OP), and the bone tissue involved in these studies are usually long bones such as femur and tibia in OP patients or rat models. However, few studies have investigated the effects of PEMF on the vertebral bone in mice with OP. This study aimed to investigate whether PEMF preserve lumbar vertebral bone mass, microarchitecture and strength in ovariectomized (OVX) mouse model of OP and its associated mechanisms...
December 8, 2017: Bone
https://www.readbyqxmd.com/read/29229407/inducing-targeted-failure-in-cadaveric-testing-of-3-segment-spinal-units-with-and-without-simulated-metastases
#10
Karlijn H J Groenen, Dennis Janssen, Yvette M van der Linden, Jan G M Kooloos, Jasper Homminga, Nico Verdonschot, Esther Tanck
We propose an experimental setup and protocol able to induce targeted failure of the middle vertebra in 3-segment spinal units and to capture the specimens' deformation in their post-failure state. Sixteen 3-segment spinal units with and without artificial metastases were destructively tested in axial compression using one of two failure criteria; either: (A) A clear drop in force (>10-15% of peak force) (n = 4); or (B) A minimum displacement of 5 mm (n = 12). Subsequently, the specimens were fully fixated in polymethylmethacrylate (PMMA), thereby preserving their post-failure state...
December 8, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/29229402/full-field-strain-distribution-in-multi-vertebra-spine-segments-an-in-vitro-application-of-digital-image-correlation
#11
Marco Palanca, Miguel Marco, Maria Luisa Ruspi, Luca Cristofolini
The biomechanics of the spine is experimentally assessed in terms of range of motion and overall stiffness. Quantification of the surface strain distribution is currently limited either to the vertebrae or the discs, whereas a full-field approach to measure the strain distribution in a multi-vertebra segment is currently missing. The aim of this work was to explore the feasibility of using Digital Image Correlation (DIC) to measure the strain distribution simultaneously on the vertebral bodies and the intervertebral discs of spine segments in different loading configurations...
December 8, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/29229060/development-and-validation-of-prediction-equations-for-spinal-curve-angles-based-on-skin-surface-measurements
#12
Tássia S Furlanetto, Eduardo B C de Oliveira, Cláudia T Candotti, Adriane Vieira, Paula V de Mesquita, Isis J R L Navarro, Jefferson F Loss
OBJECTIVE: The purpose of this study was to develop, assess the reliability of, and validate prediction equations that estimate the sagittal curves of the spine from the skin surface. METHODS: Forty digital panoramic radiographs were used to develop the prediction equation, and 59 radiographs were used to assess reliability and validate the equations. For evaluation of the thoracic and lumbar curves, anatomical reference points were marked on the vertebral body, spinous process, and skin surface at the C6, C7, T2, T4, T6, T8, T10, T12, L2, L4, and S2 vertebrae...
November 2017: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/29226718/contribution-to-fe-modeling-for-intraoperative-pedicle-screw-strength-prediction
#13
Maxim Van den Abbeele, Jean-Marc Valiadis, Lucas V P C Lima, Pascal Khalifé, Philippe Rouch, Wafa Skalli
Although the use of pedicle screws is considered safe, mechanical issues still often occur. Commonly reported issues are screw loosening, screw bending and screw fracture. The aim of this study was to develop a Finite Element (FE) model for the study of pedicle screw biomechanics and for the prediction of the intraoperative pullout strength. The model includes both a parameterized screw model and a patient-specific vertebra model. Pullout experiments were performed on 30 human cadaveric vertebrae from ten donors...
December 10, 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/29226553/design-and-properties-of-a-novel-radiopaque-injectable-apatitic-calcium-phosphate-cement-suitable-for-image-guided-implantation
#14
Myriam Le Ferrec, Charlotte Mellier, Florian Boukhechba, Thomas Le Corroller, Daphné Guenoun, Franck Fayon, Valérie Montouillout, Christelle Despas, Alain Walcarius, Dominique Massiot, François-Xavier Lefèvre, Caroline Robic, Jean-Claude Scimeca, Jean-Michel Bouler, Bruno Bujoli
An injectable purely apatitic calcium phosphate cement (CPC) was successfully combined to a water-soluble radiopaque agent (i.e., Xenetix® ), to result in an optimized composition that was found to be as satisfactory as poly(methyl methacrylate) (PMMA) formulations used for vertebroplasty, in terms of radiopacity, texture and injectability. For that purpose, the Xenetix dosage in the cement paste was optimized by injection of the radiopaque CPC in human cadaveric vertebrae under classical PMMA vertebroplasty conditions, performed by interventional radiologists familiar with this surgical procedure...
December 11, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29224900/single-fraction-stereotactic-ablative-body-radiotherapy-for-oligometastasis-outcomes-from-132-consecutive-patients
#15
S Gandhidasan, D Ball, T Kron, M Bressel, M Shaw, J Chu, S Chander, G Wheeler, N Plumridge, B Chesson, S David, S Siva
AIMS: Stereotactic ablative body radiotherapy (SABR) is currently used to treat oligometastases, but the optimum dose/fractionation schedule is unknown. In this study, we evaluated outcomes after single fraction SABR in patients with oligometastatic disease. MATERIALS AND METHODS: Single institutional retrospective review of patients treated with single fraction SABR for one to three oligometastases between 2010 and 2015. The primary outcome was freedom from widespread disease defined as distant recurrence not amenable to surgery or SABR; or recurrence with four or more metastases...
December 7, 2017: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/29222405/multiple-weekly-dalbavancin-dosing-for-the-treatment-of-native-vertebral-osteomyelitis-caused-by-methicillin-resistant-staphylococcus-aureus-a-case-report
#16
Thamer A Almangour, Valerie Fletcher, Mohammed Alessa, Abdullah A Alhifany, Deanne Tabb
BACKGROUND Native vertebral osteomyelitis (NVO) is a common form of hematogenous osteomyelitis, with Staphylococcus aureus (S. aureus) being the most commonly isolated organism. Dalbavancin is approved by the US Food and Drug Administration (FDA) for the treatment of acute bacterial skin and skin structure infections (ABSSSI) and has a sufficiently promising pharmacokinetic and pharmacodynamic profile to be considered for the treatment of vertebral osteomyelitis. We describe here what is probably the first reported case of using multiple weekly dalbavancin to treat a complicated methicillin-resistant Staphylococcus aureus (MRSA) bacteremia and vertebral osteomyelitis...
December 9, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/29218482/a-novel-muscle-sparing-high-thoracotomy-for-upper-thoracic-spine-resection-and-reconstruction
#17
Derek T Bernstein, Wu Zhuge, Shanda H Blackmon, Rex A W Marco
PURPOSE: High thoracotomy allows access to the anterior cervicothoracic and upper thoracic vertebrae; however, traditional techniques transect shoulder girdle muscles, leading to postoperative shoulder dysfunction. Muscle-sparing techniques diminish this concern, but often sacrifice the quality of exposure. We describe a novel muscle-sparing, high thoracotomy approach for the treatment of ventral cervicothoracic and upper thoracic spine lesions. METHODS: A novel muscle-sparing, high thoracotomy approach is described, utilizing a midline posterior incision with lateral extension from the lateral decubitus position...
December 7, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29218392/unusual-circumstances-to-diagnose-cervical-pott-s-disease
#18
Mohamed Ali Kedous, Ahmed Msakni, Wael Chebbi, Mourad Zaraa, Mohsen Trabelsi
Tuberculous spondylodiscitis usually affects the dorso-lumbar spine, and its cervical location is a rare condition that can mimic other diseases and consequently cause treatment delays. We report a case of tuberculous spondylodiscitis of the lower cervical spine discovered under unusual circumstances in a patient with severe polytrauma involving a cranio-cerebral trauma, a non-displaced fracture of the two laminæ and the spinous process of the C6 vertebrae as well as fibular and tibial shaft fractures. The patient underwent static tibial nailing, and a collar with occipital and chin supports was applied...
December 7, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/29215502/functional-limitations-due-to-stiffness-after-long-level-spinal-instrumented-fusion-surgery-to-correct-lumbar-degenerative-flat-back
#19
Jeong-Hoon Choi, Jee-Soo Jang, Kyong-Suk Yoo, Jong-Mog Shin, Il-Tae Jang Md
STUDY DESIGN: A retrospective analysis of functional limitations due to stiffness after long level spinal instrumented fusion surgery to correct lumbar degenerative flat back was performed OBJECTIVE.: To analysis the functional limitations in patients treated surgically for ALDFB with long level instrumented fusion to the sacrum or pelvis. SUMMARY OF BACKGROUND DATA: Long level instrumented fusion for adult lumbar degenerative flat back (ALDFB) decreases back pain and spinal deformity...
December 5, 2017: Spine
https://www.readbyqxmd.com/read/29214357/investigation-and-analysis-of-osteoporosis-falls-and-fragility-fractures-in-elderly-people-in-the-beijing-area-a-study-on-the-bone-health-status-of-elderly-people-%C3%A2-%C3%A2-80%C3%A2-years-old-with-life-self-care
#20
Jian Zhou, Ming-Zhao Qin, Qian Liu, Jin-Ping Liu
Among ≥ 80 years old and under life self-care in the Beijing area, the prevalences of osteoporosis, falls, and fragility fracture were high; and these prevalences were even higher in women. The treatment rate of osteoporosis is very low. Therefore, comprehensive and standardized prevention and treatment should be promoted. PURPOSE: The purpose of this study is to investigate prevalence of osteoporosis, falls, and fragility fractures in this population, and analyze related factors, in order to provide a basis for standardized prevention and treatment...
December 6, 2017: Archives of Osteoporosis
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