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https://www.readbyqxmd.com/read/29350649/magnetic-resonance-imaging-in-degenerative-disease-of-the-lumbar-spine-fat-saturation-technique-and-contrast-medium
#1
Paola D'Aprile, Michelangelo Nasuto, Alfredo Tarantino, Giuseppe Guglielmi, J Randy Jinkins
PURPOSE: To examine both anterior and posterior elements of the lumbar spine in patients with low back pain using MRI T2-weighted sequences with Fat Saturation (FS) and contrast enhanced T1-weighted sequences with FS. MATERIALS AND METHODS: Two thousand eight hundred and twenty (2820) patients (1628 male, 1192 female, mean age 54) presenting low back pain underwent MRI standard examination (Sagittal T1w TSE and T2w TSE, axial T1 SE) with the addition of sagittal and axial T2w Fat Sat (FS) sequences...
January 19, 2018: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/29343043/mandibular-pain-an-uncommon-radiation-for-cervical-facet-joint-syndrome
#2
Emanuele Piraccini, Helen Byrne, Morena Calli, Giovanni Musetti, Daniele Bellantonio, Ruggero M Corso, Stefano Maitan
No abstract text is available yet for this article.
January 17, 2018: Minerva Anestesiologica
https://www.readbyqxmd.com/read/29329443/bone-formation-in-ankylosing-spondylitis-during-anti-tumour-necrosis-factor-therapy-imaged-by-18f-fluoride-positron-emission-tomography
#3
Stefan T G Bruijnen, Nicki J F Verweij, Leonie M van Duivenvoorden, Nathalie Bravenboer, Dominique L P Baeten, Christiaan J van Denderen, Irene E van der Horst-Bruinsma, Alexandre E Voskuyl, Martijn Custers, Peter M van de Ven, Joost C J Bot, Bouke J H Boden, Adriaan A Lammertsma, Otto S H Hoekstra, Pieter G H M Raijmakers, Conny J van der Laken
Objectives: Excessive bone formation is an important hallmark of AS. Recently it has been demonstrated that axial bony lesions in AS patients can be visualized using 18F-fluoride PET-CT. The aim of this study was to assess whether 18F-fluoride uptake in clinically active AS patients is related to focal bone formation in spine biopsies and is sensitive to change during anti-TNF treatment. Methods: Twelve anti-TNF-naïve AS patients [female 7/12; age 39 years (SD 11); BASDAI 5...
January 9, 2018: Rheumatology
https://www.readbyqxmd.com/read/29325693/updates-in-the-eighth-edition-of-the-tumor-node-metastasis-staging-classification-for-urologic-cancers
#4
REVIEW
Gladell P Paner, Walter M Stadler, Donna E Hansel, Rodolfo Montironi, Daniel W Lin, Mahul B Amin
The Tumor-Node-Metastasis (TNM) classification on cancer staging, jointly developed by the American Joint Commission on Cancer (AJCC) and the Union for International Cancer Control (UICC), has been updated to its 8th edition with two contemporaneous versions published by the AJCC and UICC. While the goal of the AJCC and UICC is to have identical TNM staging systems, differences exist between these two publications including in the staging of urologic cancers. Among several new facets in the AJCC staging manual, a select few of greater import include an expanded section on imaging, presentation of levels of evidence for significant changes, and endorsement of risk assessment models that pass the AJCC quality criteria such as in prostate cancer...
January 8, 2018: European Urology
https://www.readbyqxmd.com/read/29318337/full-endoscopic-posterior-foraminotomy-surgery-for-cervical-disc-herniations
#5
REVIEW
M Komp, S Oezdemir, P Hahn, S Ruetten
OBJECTIVE: Surgery for cervical disc herniation with full-endoscopic posterior access. INDICATIONS: Cervical disc herniation and neuroforaminal pathology with radicular symptoms. CONTRAINDICATIONS: Neck pain alone, cervical myelopathy or pathologies with central nervous system symptoms, instabilities requiring correction/instabilities. SURGICAL TECHNIQUE: Introduction of a surgical tube to the facet joint at the level to be operated on...
January 9, 2018: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/29317361/intraarticular-pulsed-radiofrequency-to-treat-refractory-lumbar-facet-joint-pain-in-patients-with-low-back-pain
#6
Min Cheol Chang, Yun-Woo Cho, Da Hyun Ahn, Kyung Hee Do
OBJECTIVE: Many treatment techniques have been used for refractory lumbar facet joint pain; however, their efficacy has been controversial. In this study, we investigated the clinical efficacy and safety of intraarticular pulsed radiofrequency for the treatment of refractory lumbar facet joint pain in patients with low back pain. METHODS: Twenty patients with refractory lumbar facet joint pain were recruited and each patient was treated using intraarticular pulsed radiofrequency...
January 6, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29310946/validation-of-lumbar-spine-loading-from-a-musculoskeletal-model-including-the-lower-limbs-and-lumbar-spine
#7
Jason A Actis, Jasmin D Honegger, Deanna H Gates, Anthony J Petrella, Luis A Nolasco, Anne K Silverman
Low back mechanics are important to quantify to study injury, pain and disability. As in vivo forces are difficult to measure directly, modeling approaches are commonly used to estimate these forces. Validation of model estimates is critical to gain confidence in modeling results across populations of interest, such as people with lower-limb amputation. Motion capture, ground reaction force and electromyographic data were collected from ten participants without an amputation (five male/five female) and five participants with a unilateral transtibial amputation (four male/one female) during trunk-pelvis range of motion trials in flexion/extension, lateral bending and axial rotation...
December 13, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29307048/biomechanical-analysis-of-a-new-lumbar-interspinous-device-with-optimized-topology
#8
Chen-Sheng Chen, Shih-Liang Shih
Interspinous spacers used stand-alone preserve joint movement but provide little protection for diseased segments of the spine. Used as adjuncts with fusion, interspinous spacers offer rigid stability but may accelerate degeneration on adjacent levels. Our new device is intended to balance the stability and preserves motion provided by the implant. A new interspinous spacer was devised according to the results of topology optimization studies. Four finite element (FE) spine models were created that consisted of an intact spine without an implant, implantation of the novel, the device for intervertebral assisted motion (DIAM system), and the Dynesys system...
January 6, 2018: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/29306376/sonography-guided-lumbar-nerve-and-facet-blocks-the-first-report-of-clinical-outcome-from-iran
#9
H Sadeghian, R Motiei-Langroudi
INTRODUCTION: Nerve root block (NRB) and facet block (FB) are viable options for pain arising from facet and lumbar disc herniation (LDH) not responding to conservative therapy but still not suitable for surgery. Classically, they are performed under fluoroscopy and computed tomography (CT) guidance, which have the disadvantages of radiation exposure and limited accessibility. The aim of this study was to assess the effectiveness of US guided FB and NRB in patients suffering from facet arthropathy and LDH...
February 2018: Radiography
https://www.readbyqxmd.com/read/29305450/in-vivo-three-dimensional-kinematics-of-normal-knees-during-different-high-flexion-activities
#10
K Kono, T Tomita, K Futai, T Yamazaki, S Tanaka, H Yoshikawa, K Sugamoto
AIMS: In Asia and the Middle-East, people often flex their knees deeply in order to perform activities of daily living. The purpose of this study was to investigate the 3D kinematics of normal knees during high-flexion activities. Our hypothesis was that the femorotibial rotation, varus-valgus angle, translations, and kinematic pathway of normal knees during high-flexion activities, varied according to activity. MATERIALS AND METHODS: We investigated the in vivo kinematics of eight normal knees in four male volunteers (mean age 41...
January 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29303466/delayed-neurological-deterioration-following-atlantoaxial-facet-joint-distraction-and-fixation-in-a-patient-with-chiari-malformation-type-i
#11
Tatsushi Inoue, Natsuki Hattori, Tsukasa Ganaha, Tadashi Kumai, Shinichiro Tateyama, Yuichi Hirose
Chiari malformation type I (CM-I) is typically treated with foramen magnum decompression. However, a recent study proposed a new technique for patients with CM-I, wherein only short atlantoaxial joint fusion and distraction is applied. Posterior fusion with or without atlantoaxial distraction is a potential option for patients with CM-I associated with basilar invagination or complex anomalous bony craniovertebral junction pathology, since this procedure allows clinicians to avoid using the technically demanding transoral approach in which some or all of the odontoid tip is invisible...
January 5, 2018: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29302913/principles-and-applications-of-the-balanced-steady-state-free-precession-sequence-in-small-animal-low-field-mri
#12
Mario Ricciardi
Magnetic resonance imaging (MRI) in small animal practice is largely based on classic two-dimensional spin-echo, inversion recovery and gradient-echo sequences which are largely limited by low spatial resolution, especially in low-field (LF)-MRI scanners. Nowadays, however, the availability of volumetric sequences can open new perspectives and enhance the diagnostic potential of this imaging modality. Balanced steady-state free precession (bSSFP) is a three-dimensional gradient-echo sequence in which image contrast is given by the ratio of T2 and T1, resulting in low soft-tissue signal, poor cerebral grey/white matter distinction and a bright signal from free fluid and fat...
January 4, 2018: Veterinary Research Communications
https://www.readbyqxmd.com/read/29288855/biomechanical-analysis-of-porous-additive-manufactured-cages-for-lateral-lumbar-interbody-fusion-a-finite-element-analysis
#13
Zhenjun Zhang, Hui Li, Guy R Fogel, Zhenhua Liao, Yang Li, Weiqiang Liu
BACKGROUND: A porous additive manufactured (AM) cage may provide stability similar to that of traditional solid cages, and may be beneficial to bone ingrowth. The biomechanical influence of various porous cages on stability, subsidence, stresses in cage, and facet contact force has not been fully described. The purpose of this study was to verify biomechanical effects of porous AM cages. METHODS: The surgical FE models with various cages were constructed. The partially porous titanium (PPT) cages and fully porous titanium (FPT) cages were applied...
December 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29282848/radiation-dose-exposure-for-lumbar-transforaminal-epidural-steroid-injections-and-facet-joint-blocks-under-ct-versus-fluoroscopic-guidance
#14
Paolo Maino, Stefano Presilla, Paola A Colli Franzone, Sander M J van Kuijk, Roberto S G M Perez, Eva Koetsier
BACKGROUND: Transforaminal epidural steroid injections (TFESIs) and facet joint blocks can be performed under fluoroscopy or computed tomography (CT) guidance. The purpose of this retrospective cohort study was to compare patient radiation dose for lumbar TFESIs and facet joint blocks under CT guidance versus fluoroscopic guidance. METHODS: The primary outcome of this retrospective cohort study was the difference between the estimated effective dose (ED) of CT guidance and fluoroscopic guidance for TFESIs and facet joint blocks...
December 28, 2017: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/29250771/the-synergistic-effect-of-prosociality-and-physical-attractiveness-on-mate-desirability
#15
Daniel Ehlebracht, Olga Stavrova, Detlef Fetchenhauer, Daniel Farrelly
Mate selection requires a prioritization and joint evaluation of different traits present or absent in potential mates. Herein, we focus on two such traits - physical attractiveness and prosociality - and examine how they jointly shape impressions of overall desirability. We report on two related experiments which make use of an innovative methodology combining large samples of raters and target persons (i.e., stimuli) and information on targets' behaviour in economic games representing altruistic behaviour (Experiment 1) and trustworthiness (Experiment 2), two important facets of prosociality...
December 17, 2017: British Journal of Psychology
https://www.readbyqxmd.com/read/29246473/coupled-motions-in-human-and-porcine-thoracic-and-lumbar-spines
#16
Idsart Kingma, Iris Busscher, Albert J van der Veen, Gijsbertus J Verkerke, Albert G Veldhuizen, Jasper Homminga, Jaap H van Dieën
Coupled motions, i.e., motions along axes other than the loaded axis, have been reported to occur in the human spine, and are likely to be influenced by inclined local axes due to the sagittal plane spine curvature. Furthermore, the role of facet joints in such motions is as yet unclear. Therefore, this study aimed at assessing coupled motions in multiple spine sections in vitro, before and after removal of posterior elements. Six elderly human and 6 young porcine spines were sectioned in four segments (high thoracic, mid thoracic, low thoracic and lumbar), each consisting of four vertebrae and three intervertebral discs...
December 6, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29245329/dural-sac-area-is-a-more-sensitive-parameter-for-evaluating-lumbar-spinal-stenosis-than-spinal-canal-area-a-retrospective-study
#17
Young Su Lim, Jong-Uk Mun, Mi Sook Seo, Bo-Hyun Sang, Yun-Sic Bang, Keum Nae Kang, Jin Woo Koh, Young Uk Kim
Narrowing of the dural sac cross-sectional area (DSCSA) and spinal canal cross-sectional area (SCCSA) have been considered major causes of lumbar central canal spinal stenosis (LCCSS). DSCSA and SCCSA were previously correlated with subjective walking distance before claudication occurs, aging, and disc degeneration. DSCSA and SCCSA have been ideal morphological parameters for evaluating LCCSS. However, the comparative value of these parameters is unknown and no studies have evaluated the clinical optimal cut-off values of DSCSA and SCCSA...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29239155/is-ultrasound-guided-cervical-periradicular-injection-useful-for-cervical-facet-joint-syndrome
#18
Andrea Tognù, Lucia Aurini, Battista Borghi, Paul F White, Raffaele Borghi
No abstract text is available yet for this article.
December 13, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/29231159/facet-joint-injections-for-non-specific-low-back-pain-a-feasibility-rct
#19
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/29219780/anatomical-and-technical-factors-associated-with-superior-facet-joint-violation-in-lumbar-fusion
#20
Alisson R Teles, Michael Paci, Gabriel Gutman, Fahad H Abduljabbar, Jean A Ouellet, Michael H Weber, Jeff D Golan
OBJECTIVE The aim of this study was to evaluate the anatomical and surgical risk factors for screw-related facet joint violation at the superior level in lumbar fusion. METHODS The authors conducted a retrospective review of a consecutive series of posterior lumbar instrumented fusions performed by a single surgeon. Inclusion criteria were primary lumbar fusion of 1 or 2 levels for degenerative disorders. The following variables were analyzed as possible risk factors: surgical technique (percutaneous vs open screw placement), depth of surgical field, degree of anterior slippage of the superior level, pedicle and facet angle, and facet degeneration of the superior level...
December 8, 2017: Journal of Neurosurgery. Spine
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