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Lumbar disc

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https://www.readbyqxmd.com/read/28748488/association-between-paraspinal-muscle-morphology-clinical-symptoms-and-functional-status-in-patients-with-lumbar-spinal-stenosis
#1
Maryse Fortin, Àron Lazáry, Peter Paul Varga, Michele C Battié
PURPOSE: Lumbar spinal stenosis (LSS) is a disabling condition associated with narrowing of the spinal canal or vertebral foramina. Paraspinal muscle atrophy and fatty infiltration have been reported in patients with chronic LBP and disc herniation. However, very few imaging studies have examined paraspinal muscle morphology and composition in patients with LSS. The purpose of this study was to investigate the association of paraspinal muscle size, composition and asymmetry with functional status in patients with LSS...
July 26, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28748380/autologous-bone-marrow-concentrate-intradiscal-injection-for-the-treatment-of-degenerative-disc-disease-with-three-year-follow-up
#2
Kenneth A Pettine, Richard K Suzuki, Theodore T Sand, Matthew B Murphy
PURPOSE: The purpose of this study is to assess safety and feasibility of intradiscal bone marrow concentrate (BMC) injections to treat low back discogenic pain as an alternative to surgery with three year minimum follow-up. METHODS: A total of 26 patients suffering from degenerative disc disease and candidates for spinal fusion or total disc replacement surgery were injected with 2 ml autologous BMC into the nucleus pulposus of treated lumbar discs. A sample aliquot of BMC was characterized by flow cytometry and CFU-F assay to determine progenitor cell content...
July 26, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28746197/role-of-thymic-stromal-lymphopoietin-in-the-pathogenesis-of-lumbar-disc-degeneration
#3
Yu Wang, Xiao-Dong Yi, Chun-De Li
BACKGROUND: This study aims to investigate the role of thymic stromal lymphopoietin (TSLP) in the pathogenesis of lumbar disc degeneration (LDD). METHODS: Nucleus pulposus tissues were collected from 77 LDD patients (the case group), in addition, normal tissues were extracted from 21 patients suffering from lumbar fractures (the control group). Immunohistochemistry was applied in order to detect TSLP positive expression. In accordance with varying transfection, the cells were divided into TSLP-siRNA, TSLP-siRNA + TSLPR-siRNA, control, blank, anti-TSLPR, and IgG groups...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28746177/correlation-between-high-intensity-zone-on-mri-and-discography-in-patients-with-low-back-pain
#4
Huadong Wang, Zhonghai Li, Chunli Zhang, Weisheng Zhang, Li Li, Jidong Guo, Wenwen Wu, Shuxun Hou
The aim of this study was to analyze the correlation between high-intensity zone (HIZ) on magnetic resonance imaging (MRI) of a lumbar disc and positive pain response assessed by discography for the diagnosis and treatment of discogenic low back pain (LBP). Thirty-seven patients aged 21 to 59 years with chronic LBP but without any neurological symptoms or lumbar disc herniation who underwent MRI and subsequent discography were included in this study. During discography, concordant pain was regarded as positive, whereas discordant pain and no pain were regarded as negative...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28742758/the-effect-of-an-adjustable-hinged-operating-table-on-lumbar-lordosis-during-lumbar-surgery
#5
Arjun Sebastian, Amin Ahmed, Brian Vernon, Emily C Nguyen, Ilyas Aleem, Michelle J Clarke, Bradford L Currier, Paul Anderson, Mohamad Bydon, Ahmad Nassr
STUDY DESIGN: Prospective observational study OBJECTIVES.: Quantify the amount of lumbar lordosis achieved on a hinged operative table in neutral, flexion, and extension. SUMMARY OF BACKGROUND DATA: Hinged operative tables may allow surgeons to adjust lumbar spine positioning intraoperatively. The amount of lumbar lordosis in neutral, flexion, and extension positions has not been quantified prospectively using a hinged table. METHODS: Thirty patients undergoing elective lumbar surgery were enrolled...
July 24, 2017: Spine
https://www.readbyqxmd.com/read/28742099/variants-of-acan-are-associated-with-severity-of-lumbar-disc-herniation-in-patients-with-chronic-low-back-pain
#6
Romain Shanil Perera, Poruwalage Harsha Dissanayake, Upul Senarath, Lalith Sirimevan Wijayaratne, Aranjan Lional Karunanayake, Vajira Harshadeva Weerabaddana Dissanayake
INTRODUCTION: Disc herniation is a complex spinal disorder associated with disability and high healthcare cost. Lumbar disc herniation is strongly associated with disc degeneration. Candidate genes of the aggrecan metabolic pathway may associate with the severity of lumbar disc herniation. OBJECTIVES: This study evaluated the association of single nucleotide variants (SNVs) of the candidate genes of the aggrecan metabolic pathway with the severity of lumbar disc herniation in patients with chronic mechanical low back pain...
2017: PloS One
https://www.readbyqxmd.com/read/28740935/effects-of-vertebral-body-sparing-proton-craniospinal-irradiation-on-the-spine-of-young-pediatric-patients-with-medulloblastoma
#7
Iain MacEwan, Brian Chou, Jeremy Moretz, Lilia Loredo, David Bush, Jerry D Slater
PURPOSE: To investigate the long-term effects of vertebral-body-sparing proton craniospinal irradiation (CSI) on the spine of young patients with medulloblastoma. METHODS AND MATERIALS: Six children between the ages of 3 and 5 years with medulloblastoma were treated with vertebral-body-sparing proton CSI after maximal safe resection. Radiation therapy was delivered in the supine position with posterior beams targeting the craniospinal axis, and the proton beam was stopped anterior to the thecal sac...
April 2017: Advances in Radiation Oncology
https://www.readbyqxmd.com/read/28739516/endopelvic-approach-for-iliac-crest-bone-harvesting-technical-note
#8
S Le Pape, R Gauthe, L Du Pouget, O Gille, J-M Vital, M Ould-Slimane
BACKGROUND: The anterior approach to lumbar spine surgery has grown in popularity in the past few years; spinal fusion of the last two lumbar levels is often required. While there are alternatives to bone grafting available, including recombinant human bone morphogenetic protein 2 or bone substitutes, only cancellous autologous bone has all the required factors for bone growth. To avoid the use of bone substitutes, remote iliac crest bone harvesting remains the gold standard. However, this technique may lead to some unfavorable outcomes...
July 21, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28739476/severity-of-foraminal-lumbar-stenosis-and-the-relation-to-clinical-symptoms-and-response-to-periradicular-infiltration-introduction-of-the-melting-sign
#9
M Farshad, R Sutter, A Hoch
BACKGROUND CONTEXT: Nerve root compression causing symptomatic radiculopathy can occur within the intervertebral foramen. Sagittal MRI sequences are reliable in detection of nerve root contact to intraforaminal disc material, but a clinically relevant classification of degree of contact is lacking. PURPOSE: To investigate a potential relation of amount of contact between intraforaminal disc material and nerve root to clinical findings and response after periradicular corticosteroid infiltration...
July 21, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28736380/-association-of-fasl-844t-c-gene-polymorphism-with-fasl-expression-in-the-nucleus-pulposus-of-degenerative-lumbar-intervertebral-discs
#10
Zheng-Ming Sun, Pengmaojiacuo Pengmaojiacuo, Hong-Hai Xu, Yan-Hai Chang, Xue-Yuan Wu, Xiang-Hui Dong, Ming Ling
OBJECTIVE: To investigate the association of FasL-844T/C gene polymorphism with the magnetic resonance imaging (MRI) findings and FasL expression in the nucleus pulposus of degenerative lumbar intervertebral discs. METHODS: Lumbar MRI data, venous blood and nucleus pulposus were collected from 105 patients with lumbar disc herniation. The genotypes of FasL-844T/C gene of the patients were determined using matrix-assisted laser desorption ionization time-of-flight mass spectrometry...
July 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28735122/ventral-lumbar-synovial-cyst-causing-cauda-equina-compression-case-report-and-literature-review
#11
Anan Shtaya, Ahmed-Ramadan Sadek, Mark Walker, Ali Nader-Sepahi
BACKGROUND: Juxtafacet spinal cysts are cystic synovial lesions that are often indistinguishable clinically or radiologically and require histopathology analysis to confirm the diagnosis. Lumbar synovial cysts usually arising from the synovium of the facet joints. They have been described posterolateral or rarely in the posterior midline. However, we describe the first synovial cyst ventral to the dural sac. CASE DESCRIPTION: We report a lumbar 3-4 lesion causing cauda equina compression in a 57-year-old man who presented with 3 months history of low back pain and bilateral sciatica, intermittent urinary incontinence and erectile dysfunction...
July 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28735027/translation-of-an-injectable-triple-interpenetrating-network-hydrogel-for-intervertebral-disc-regeneration-in-a-goat-model
#12
Sarah E Gullbrand, Thomas P Schaer, Prateek Agarwal, Justin R Bendigo, George R Dodge, Weiliam Chen, Dawn M Elliott, Robert L Mauck, Neil R Malhotra, Lachlan J Smith
Degeneration of the intervertebral discs is a progressive cascade of cellular, compositional and structural changes that is frequently associated with low back pain. As the first signs of disc degeneration typically arise in the disc's central nucleus pulposus (NP), augmentation of the NP via hydrogel injection represents a promising strategy to treat early to mid-stage degeneration. The purpose of this study was to establish the translational feasibility of a triple interpenetrating network hydrogel composed of dextran, chitosan, and teleostean (DCT) for augmentation of the degenerative NP in a preclinical goat model...
July 19, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28733301/a-3d-navigation-template-for-guiding-a-unilateral-lumbar-pedicle-screw-with-contralateral-translaminar-facet-screw-fixation-a-study-protocol-for-multicentre-randomised-controlled-trials
#13
Zhen-Xuan Shao, Wei He, Shao-Qi He, Sheng-Lei Lin, Zhe-Yu Huang, Hong-Chao Tang, Wen-Fei Ni, Xiang-Yang Wang, Ai-Min Wu
INTRODUCTION: The incidence of lumbar disc degeneration disease has increased in recent years. Lumbar interbody fusion using two unilateral pedicle screws and a translaminar facet screw fixation has advantages of minimal invasiveness and lower costs compared with the traditional methods. Moreover, a method guided by a three-dimensional (3D) navigation template may help us improve the surgical accuracy and the success rate. This is the first randomised study using a 3D navigation template to guide a unilateral lumbar pedicle screw with contralateral translaminar facet screw fixation...
July 21, 2017: BMJ Open
https://www.readbyqxmd.com/read/28733037/efficient-probabilistic-finite-element-analysis-of-a-lumbar-motion-segment
#14
Dana J Coombs, Paul J Rullkoetter, Peter J Laz
Finite element models of the lumbar spine are useful in assessing biomechanics and performance of implants. Models are often developed using the anatomy of an individual subject. Average mechanical property values for the annulus and other soft tissue structures are typically utilized from the literature, as data for the same subject are not available. However, these properties can have significant variability. While probabilistic methods enable the impact of soft tissue property variability on spine mechanics to be assessed, they often require lengthy computation times...
July 11, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28728580/lumbar-microdiscectomy-and-post-operative-activity-restrictions-a-protocol-for-a-single-blinded-randomised-controlled-trial
#15
Chris D Daly, Kai Zheong Lim, Jennifer Lewis, Kelly Saber, Mohammed Molla, Naor Bar-Zeev, Tony Goldschlager
BACKGROUND: Lumbar microdiscectomy is the most commonly performed spinal surgery procedure, with over 300,000 cases performed annually in the United States alone. Traditionally, patients were advised to restrict post-operative activity as this was believed to reduce the risk of disc reherniation and progressive instability. However, this practice would often delay patients return to work. In contemporary practice many surgeons do not restrict patient post-operative activity due to the perception this practice is unnecessary...
July 20, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28727718/quantity-of-disc-removal-and-radiological-outcomes-of-percutaneous-endoscopic-lumbar-discectomy
#16
Ji Han Heo, Chi Heon Kim, Chun Kee Chung, Yunhee Choi, Young-Geun Seo, Dong Hoi Kim, Sung Bae Park, Jung Hyeon Moon, Won Heo, Jong-Myung Jung
BACKGROUND: Herniated intervertebral disc disease (HIVD) is a common cause of lower back and leg pain. Percutaneous endoscopic lumbar discectomy (PELD) is indicated when non-surgical treatments such as medication and interventions are intractable. Ruptured discs and loose fragments inside discs are removed during PELD. Nerve root decompression is usually assessed by visualizing the free movement of the traversing nerve root or epidural fat, the free passage of a probe into the epidural space, the depression of the annulus, and the removal of the expected ruptured discs and loose fragments based on preoperative magnetic resonance images (MRI)...
July 2017: Pain Physician
https://www.readbyqxmd.com/read/28727709/transforaminal-percutaneous-endoscopic-discectomy-and-foraminoplasty-after-lumbar-spinal-fusion-surgery
#17
Jian-Jun Wu, Hui-Zhen Chen, Changkun Zheng
BACKGROUND: The most common causes of pain following lumbar spinal fusions are residual herniation, or foraminal fibrosis and foraminal stenosis that is ignored, untreated, or undertreated. The original surgeon may advise his patient that nothing more can be done in his opinion that the nerve was visually decompressed by the original surgery. Post-operative imaging or electrophysiological assessment may be inadequate to explain all the reasons for residual or recurrent symptoms. Treatment of failed lumbar spinal fusions by repeat traditional open revision surgery usually incorporates more extensive decompression causing increased instability and back pain...
July 2017: Pain Physician
https://www.readbyqxmd.com/read/28727705/activation-of-the-rage-stat3-pathway-in-the-dorsal-root-ganglion-contributes-to-the-persistent-pain-hypersensitivity-induced-by-lumbar-disc-herniation
#18
Xin-Sheng Zhang, Xiao Li, Hai-Jie Luo, Zhu-Xi Huang, Cui-Cui Liu, Qing Wan, Shu-Wei Xu, Shao-Ling Wu, Song-Jian Ke, Chao Ma
BACKGROUND: Clinically, chronic low back pain and sciatica associated with lumbar disc herniation (LDH) is a common musculoskeletal disorder. Due to the unawareness of detailed mechanisms, it is difficult to get an effective therapy. OBJECTIVE: The aim of the present study was to identify the role of the RAGE/STAT3 pathway in the dorsal root ganglion (DRG) on the formation and development of persistent pain hypersensitivity induced by LDH. STUDY DESIGN: Controlled animal study...
July 2017: Pain Physician
https://www.readbyqxmd.com/read/28723873/total-disc-arthroplasty-and-anterior-interbody-fusion-in-the-lumbar-spine-have-relatively-few-differences-in-readmission-and-short-term-adverse-events
#19
Blake N Shultz, Alexander T Wilson, Nathaniel T Ondeck, Patawut Bovonratwet, Ryan P McLynn, Jonathan J Cui, Jonathan N Grauer
STUDY DESIGN: Retrospective matched cohort study of prospectively collected data. OBJECTIVE: To compare rates of adverse events and readmission between lumbar total disc arthroplasty (TDA) and anterior lumbar interbody fusion (ALIF) using the American College of Surgeons National Surgical Quality Improvement Program (NSQIP) database. SUMMARY OF BACKGROUND DATA: TDA and ALIF may be considered for similar degenerative indications. However, there have been few large-cohort comparison studies of short-term clinical outcomes for these procedures...
July 18, 2017: Spine
https://www.readbyqxmd.com/read/28723772/anatomic-investigation-of-lumbar-transforaminal-fenestration-approach-and-its-clinical-application-in-far-lateral-disc-herniation
#20
Baoshan Xu, Haiwei Xu, Jean Destandau, Xinlong Ma, Jian He, Qun Xia, Ning Ji, Qiang Yang, Yue Liu, Hongfeng Jiang
Treating lumbar disease at the intervertebal foramina is controversial because we lack an approach providing sufficient exposure and preserving spinal stability. The primary objective of this study was to investigate the feasibility of the transforaminal fenestration (TFF) approach for treating lumbar disease involving the intervertebal foramina.In the anatomic study of 30 adult cadaveric lumbar spine specimens, the TFF approach was used from L1 to S1. The scope of resection was measured manually and on 3D CT images...
July 2017: Medicine (Baltimore)
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