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Stenosis spinal canal

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https://www.readbyqxmd.com/read/28090452/classifying-thoracolumbar-fractures-role-of-quantitative-imaging
#1
REVIEW
Fernando Ruiz Santiago, Pablo Tomás Muñoz, Elena Moya Sánchez, Marta Revelles Paniza, Alberto Martínez Martínez, Antonio Luis Pérez Abela
This article describes different types of vertebral fractures that affect the thoracolumbar spine and the most relevant contributions of the different classification systems to vertebral fracture management. The vertebral fractures types are based on the three columns model of Denis that includes compression, burst, flexion-distraction and fracture-dislocation types. The most recent classifications systems of these types of fractures are reviewed, including the Thoracolumbar Injury Classification and Severity score (TLICS) and the Arbeitsgemeinschaft für Osteosynthesefragen Spine Thoracolumbar Injury Classification and Severity score (AOSpine-TLICS)...
December 2016: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28090445/population-reference-range-for-developmental-lumbar-spinal-canal-size
#2
James F Griffith, Junbin Huang, Sheung-Wai Law, Fan Xiao, Jason Chi Shun Leung, Defeng Wang, Lin Shi
BACKGROUND: Considerable variability exists in normal developmental lumbar spinal canal size. This impacts the likelihood of neural compromise. Spinal canal development is complete by 17 years. As diseases incurred thereafter do not knowingly affect the developmental size of the spinal canal, it is reasonable to use a selected population undergoing abdominopelvic computed tomography (CT) examination to determine developmental lumbar spinal canal size. METHODS: Study approval was granted by the Clinical Research Ethics Committee...
December 2016: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28087395/lumbar-spinal-muscles-and-spinal-canal-study-by-mri-three-dimensional-reconstruction-in-adult-lumbar-spinal-stenosis
#3
Louis Boissière, Bertrand Moal, Olivier Gille, Elise De-Roquefeuil, Muriel Durieux, Ibrahim Obeid, Vincent Dousset, Jean-Marc Vital, Wafa Skalli
BACKGROUND: Lumbar spinal stenosis is degenerative disc disease most common manifestation. If stenosis degree seems poorly related to symptom severity, lumbar muscles role is recognized. Many studies report imaging methods, to analyze muscle volumes and fat infiltration (FI), but remain limited due to the difficulty to represent entire muscle volume variability. Recently a 3D muscle reconstruction protocol (using the deformation of a parametric specific object method (DPSO) and three point Dixon images) was reported...
January 10, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28078834/magnetic-resonance-imaging-findings-of-patients-with-suspected-tuberculosis-from-a-tertiary-care-centre-in-sri-lanka
#4
A S Pallewatte, N A Wickramasinghe
Introduction: Spinal tuberculosis (TB) is a relatively common cause for spinal pathology in Sri Lanka and a common indication for magnetic resonance imaging (MRI). Objectives: The objective of the study was to describe the MRI imaging pattern of spinal TB in a series of patients. Methods: One hundred and nine patients with clinically confirmed spinal tuberculosis who had undergone MRI scans at the National Hospital of Sri Lanka from 2012-2016 were included in the study...
30, 2016: Ceylon Medical Journal
https://www.readbyqxmd.com/read/28068753/retrospective-matched-pair-cohort-study-on-effect-of-bisegmental-fenestration-versus-hemilaminectomy-for-bisegmental-spinal-canal-stenosis-at-l3-l4-and-l4-l5
#5
Julia Schüppel, Friedrich Weber
Background The main symptoms of degenerative lumbar spinal canal stenosis are progressive back pain, spinal claudication, and, occasionally, sensory and motor deficits. Impairments particularly occur during walking, standing, and sitting. Thus social and vocational activities are increasingly restricted, causing considerable suffering for patients. Surgical therapies are superior to conservative ones. This article studies the outcome of 2-level fenestration versus hemilaminectomy for bisegmental spinal stenosis decompression...
January 9, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/28060908/experimental-mouse-model-of-lumbar-ligamentum-flavum-hypertrophy
#6
Takeyuki Saito, Kazuya Yokota, Kazu Kobayakawa, Masamitsu Hara, Kensuke Kubota, Katsumi Harimaya, Kenichi Kawaguchi, Mitsumasa Hayashida, Yoshihiro Matsumoto, Toshio Doi, Keiichiro Shiba, Yasuharu Nakashima, Seiji Okada
Lumbar spinal canal stenosis (LSCS) is one of the most common spinal disorders in elderly people, with the number of LSCS patients increasing due to the aging of the population. The ligamentum flavum (LF) is a spinal ligament located in the interior of the vertebral canal, and hypertrophy of the LF, which causes the direct compression of the nerve roots and/or cauda equine, is a major cause of LSCS. Although there have been previous studies on LF hypertrophy, its pathomechanism remains unclear. The purpose of this study is to establish a relevant mouse model of LF hypertrophy and to examine disease-related factors...
2017: PloS One
https://www.readbyqxmd.com/read/28043848/surgical-treatment-of-degenerative-spondylolisthesis
#7
REVIEW
P Guigui, E Ferrero
Degenerative spondylolisthesis is a common pathology, often causing lumbar canal stenosis. There is, however, no strong consensus regarding the various medical and surgical treatments available. Surgery is indicated mainly for perceived functional impairment; when the indication is accepted, several questions determine the choice of surgical strategy. Improvement in neurological symptoms is one of the main treatment objectives. For this, it is useful to perform radicular decompression. Some authors recommend indirect decompression by interbody fusion (ALIF, TLIF, XLIF), others by means of an interspinous spacer but the most frequent technique is direct posterior decompression...
December 30, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28026727/radiological-changes-after-interspinous-dynamic-stabilisation-for-lateral-stenosis-of-lumbar-spinal-canal-a-parallel-group-randomised-trial
#8
J Mohar, M Cimerman
PURPOSE OF THE STUDY Interspinous dynamic stabilisation devices (IDSDs) are used for stabilisation and indirect decompression of the spinal motion segment in minimally invasive treatment of degenerative conditions of lumbar spine. Good methodological quality studies on biomechanical effects of IDSDs are lacking in scientific literature. The purpose of this study was to evaluate the biomechanical effect of dynamic IDSD implantation on a spinal motion segment. MATERIAL AND METHODS We conducted a parallel group randomised trial (RT) on twelve patients, comparing radiological stabilisation and indirect decompression outcome measures between groups of patients with an isolated degenerative condition of L4-L5 motion segment and unilateral L5 nerve root radiculopathy...
2016: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28017708/comparison-of-morphology-between-patients-with-and-without-developmental-spinal-canal-stenosis-to-inform-the-feasibility-of-c1%C3%A2-lateral-mass-screw-insertion-in-the-atlas
#9
Naoki Notani, Masashi Miyazaki, Shozo Kanezaki, Toshinobu Ishihara, Masanori Kawano, Hiroshi Tsumura
BACKGROUND: C1 lateral mass screws are increasingly being used as an effective anchoring system. Insufficient posterior arch height increases difficulty of inserting the screws using the Tan method. The general aim of our retrospective cross-sectional study was to clarify the atlas morphology of patients with developmental spinal canal stenosis to evaluate the usefulness of the Tan method. METHODS: A computed tomography myelogram was performed in 85 Japanese patients presenting with spinal disorders...
December 23, 2016: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/27994791/analysis-of-the-relationship-between-ligamentum-flavum-thickening-and-lumbar-segmental-instability-disc-degeneration-and-facet-joint-osteoarthritis-in-lumbar-spinal-stenosis
#10
Toyomi Yoshiiwa, Masashi Miyazaki, Naoki Notani, Toshinobu Ishihara, Masanori Kawano, Hiroshi Tsumura
STUDY DESIGN: Cross-sectional study. PURPOSE: To investigate the relationship between ligamentum flavum (LF) thickening and lumbar segmental instability and disc degeneration and facet joint osteoarthritis. OVERVIEW OF LITERATURE: Posterior spinal structures, including LF thickness, play a major role in lumbar spinal canal stenosis pathogenesis. The cause of LF thickening is multifactorial and includes activity level, age, and mechanical stress...
December 2016: Asian Spine Journal
https://www.readbyqxmd.com/read/27994785/baastrup-s-disease-is-associated-with-recurrent-of-sciatica-after-posterior-lumbar-spinal-decompressions-utilizing-floating-spinous-process-procedures
#11
Masao Koda, Chikato Mannoji, Masazumi Murakami, Tomoaki Kinoshita, Jiro Hirayama, Tomohiro Miyashita, Yawara Eguchi, Masashi Yamazaki, Takane Suzuki, Masaaki Aramomi, Mitsutoshi Ota, Satoshi Maki, Kazuhisa Takahashi, Takeo Furuya
STUDY DESIGN: Retrospective case-control study. PURPOSE: To determine whether kissing spine is a risk factor for recurrence of sciatica after lumbar posterior decompression using a spinous process floating approach. OVERVIEW OF LITERATURE: Kissing spine is defined by apposition and sclerotic change of the facing spinous processes as shown in X-ray images, and is often accompanied by marked disc degeneration and decrement of disc height. If kissing spine significantly contributes to weight bearing and the stability of the lumbar spine, trauma to the spinous process might induce a breakdown of lumbar spine stability after posterior decompression surgery in cases of kissing spine...
December 2016: Asian Spine Journal
https://www.readbyqxmd.com/read/27977571/percutaneous-endoscopic-transforaminal-lumbar-spinal-canal-decompression-for-lumbar-spinal-stenosis
#12
Bingtao Wen, Xifeng Zhang, Lin Zhang, Peng Huang, Guoquan Zheng
This study aimed to evaluate the safety and curative effect of percutaneous endoscopic transforaminal lumbar spinal canal decompression in the treatment of lumbar spinal stenosis.This retrospective study recruited 64 patients with lumbar spinal stenosis who underwent percutaneous endoscopic lumbar spinal canal decompression via surgical approach of posterolateral intervertebral foramen. The postoperation neurological function and pain status were evaluated by the visual analog scale (VAS) score of pain and the Oswestry disability index (ODI), and the patient satisfaction was evaluated according to the MacNab outcome criteria...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27957826/mir-199b-5p-inhibits-osteogenic-differentiation-in-ligamentum-flavum-cells-by-targeting-jag1-and-modulating-the-notch-signalling-pathway
#13
Xiaochen Qu, Zhongqiang Chen, Dongwei Fan, Chuiguo Sun, Yan Zeng, Zhaoqing Guo, Qiang Qi, Weishi Li
Ossification of the ligamentum flavum (OLF) is a pathology almost only reported in East Asian countries. The leading cause of OLF is thoracic spinal canal stenosis and myelopathy. In this study, the role of miR-199b-5p and jagged 1 (JAG1) in primary ligamentum flavum cell osteogenesis was examined. MiR-199b-5p was found to be down-regulated during osteogenic differentiation in ligamentum flavum cells, while miR-199b-5p overexpression inhibited osteogenic differentiation. In addition, JAG1 was found to be up-regulated during osteogenic differentiation in ligamentum flavum cells, while JAG1 knockdown via RNA interference caused an inhibition of Notch signalling and osteogenic differentiation...
December 13, 2016: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/27930542/the-incidence-and-risk-factors-of-postoperative-neurological-deterioration-after-posterior-decompression-with-or-without-instrumented-fusion-for-thoracic-myelopathy
#14
Hui Wang, Lei Ma, Rui Xue, Dalong Yang, Tao Wang, Yanhong Wang, Sidong Yang, Wenyuan Ding
The aim of this study was to explore the incidence and risk factors of postoperative neurological deterioration after posterior decompression with or without instrumented fusion for thoracic myelopathy, and hope to provide references in decision-making and surgical planning for both spinal surgeon and thoracic stenosis patients.By retrieving the medical records from January 2001 to November 2015, 168 patients were retrospectively reviewed. According to the occurrence of postoperative neurological deterioration, patients were divided into 2 groups: neurological deterioration (ND) group and non-ND group...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27889106/expression-of-the-jak-stat-signaling-pathway-in-the-ligamentum-flavum-of-patients-with-lumbar-spinal-canal-stenosis
#15
Hitoshi Yamahata, Koji Osuka, Tatsuro Aoyama, Muneyoshi Yasuda, Hiroshi Tokimura, Kazunori Arita, Masakazu Takayasu
BACKGROUND: Ligamentum flavum (LF) hypertrophy is an important cause of lumbar spinal canal stenosis (LSS), one of the most common spinal disorders in the elderly. Although many cytokines are reported to be associated with LF hypertrophy, the intracellular signaling system is rarely discussed. The purpose of this study was to identify the JAK/STAT signaling pathway and to examine the role of the JAK/STAT systems in the hypertrophied LF. METHODS: The LF of 10 LSS patients was analyzed and the expression of JAK1, STAT3, phosphorylated (p)-STAT3, and actin was examined by Western blot analysis...
November 23, 2016: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/27828664/surgical-treatment-of-denis-type-b-thoracolumbar-burst-fracture-with-neurological-deficiency-by-paraspinal-approach
#16
H Wu, D-X Zhao, R Jiang, X-Y Zhou
We aimed to describe the surgical technique and clinical outcomes of paraspinal-approach reduction and fixation (PARF) in a group of patients with Denis type B thoracolumbar burst fracture (TLBF) with neurological deficiencies. A total of 62 patients with Denis B TLBF with neurological deficiencies were included in this study between January 2009 and December 2011. Clinical evaluations including the Frankel scale, pain visual analog scale (VAS) and radiological assessment (CT scans for fragment reduction and X-ray for the Cobb angle, adjacent superior and inferior intervertebral disc height, and vertebral canal diameter) were performed preoperatively and at 3 days, 6 months, and 1 and 2 years postoperatively...
2016: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/27788683/analysis-of-the-independent-risk-factors-of-neurologic-deficit-after-thoracolumbar-burst-fracture
#17
Peifu Tang, Anhua Long, Tao Shi, Licheng Zhang, Lihai Zhang
BACKGROUND: The objective of this study is to identify the independent risk factors of neurologic deficit after thoracolumbar burst fracture. Traumatic fractures of the thoracolumbar spine are the most common type of spinal column fractures. Many studies have attempted to determine whether neurologic deficit in such fractures is related to spinal canal stenosis or other parameters observed on axial computed tomography. However, this relationship remains controversial. METHODS: A review of the clinical data and axial computed tomography (CT) for 105 patients was performed...
October 24, 2016: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/27775931/sublaminar-decompression-a-new-technique-for-spinal-canal-decompression-in-the-treatment-of-stenosis-in-degenerative-spinal-conditions
#18
Khaled M Kebaish, Benjamin D Elder, Sheng-Fu L Lo, Timothy F Witham
STUDY DESIGN: Technical report and case illustration. OBJECTIVE: To review the rationale and steps for a sublaminar decompression in the setting of adult deformity surgery and in degenerative spondylosis. SUMMARY OF BACKGROUND DATA: Several variations of lumbar laminotomy and posterior decompressions have been reported, although these are primarily in the setting of isolated lumbar stenosis, and often focus on treatment of central stenosis...
October 21, 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27753699/lumbar-spinal-surgery-in-patients-with-parkinson-disease-a-multicenter-retrospective-study
#19
Hiroaki Kimura, Shunsuke Fujibayashi, Bungo Otsuki, Mitsuru Takemoto, Jitsuhiko Shikata, Seiichi Odate, Mutsumi Matsushita, Akira Kusuba, Youngwoo Kim, Takeshi Sakamoto, Kei Watanabe, Masato Ota, Masanori Izeki, Naoya Tsubouchi, Shuichi Matsuda
STUDY DESIGN: A multicenter, retrospective study. OBJECTIVE: To identify the factors that affect surgery-related complications and to clarify the surgical strategy for treating lumbar disorders in Parkinson disease (PD). SUMMARY OF BACKGROUND DATA: Previous studies have reported a high complication rate for spinal surgery in patients with PD. Because of the limited number of studies, there are no guidelines for spinal surgery for PD patients...
October 6, 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27751507/-spinal-extradural-arachnoid-cyst-a-case-report-and-review-of-literature
#20
Javier Quillo-Olvera, Javier Quillo-Reséndiz, Carlos-Francisco Gutiérrez-Partida, Manuel Rodríguez-García
BACKGROUND: Arachnoid cysts of spine are a very rare occurrence. The aetiology still remains unclear, but the most accepted explanation is the existence of areas of weakness in the spinal dura. Symptoms depend on the location in the spine. Magnetic resonance imaging is used for its diagnosis. Management depends of clinical presentation, and the surgery is reserved for patients with neurological impairment. CLINICAL CASE: A case is described of 67 year-old male with myelopathy and radiculopathy symptoms, both diagnosed simultaneously...
October 14, 2016: Cirugia y Cirujanos
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