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https://www.readbyqxmd.com/read/29233749/an-amendment-to-the-neidre-and-macnab-classification-system-for-lumbosacral-nerve-root-anomaly-and-its-implication-in-percutaneous-endoscopic-lumbar-discectomy
#1
Chen Yu, Chang Zhengqi, Yu Xiuchun
BACKGROUND: Lumbar disc herniation complicated with nerve root anomaly presents great challenges to diagnosis and treatment, improper selection of surgical procedures may cause inferior outcomes and neurological injury. CASE DESCRIPTION: A 66-year old male presented with low back pain and radicular symptoms involving bilateral L-5 and S-1 nerve roots. Instead of percutaneous endoscopic lumbar discectomy, aggressive decompression was carried out due to deviation between examination and imaging findings...
December 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29218387/anatomic-parameters-of-the-sacral-lamina-for-osteosynthesis-in-transverse-sacral-fractures
#2
Yoshihiro Katsuura, Eileen Lorenz, Warren Gardner
PURPOSE: To analyze the morphometric parameters of the dorsal sacral lamina and pedicles to determine if there is adequate bony architecture to support plate osteosynthesis. METHODS: Two reviewers performed measurements on 98 randomly selected high-resolution CT scans of the pelvis to quantify the bony anatomy of the sacral lamina. Measurements included the depths of the lamina at each sacral level, the trajectory and depth of the sacral pedicles from the sacral lamina, and the width of the sacral canal...
December 8, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29217090/walking-speed-differentially-alters-spinal-loads-in-persons-with-traumatic-lower-limb-amputation
#3
Brad D Hendershot, Iman Shojaei, Julian C Acasio, Christopher L Dearth, Babak Bazrgari
Persons with lower limb amputation (LLA) perceive altered motions of the trunk/pelvis during activities of daily living as contributing factors for low back pain. When walking (at a singular speed), larger trunk motions among persons with vs. without LLA are associated with larger spinal loads; however, modulating walking speed is necessary in daily life and thus understanding the influences of walking speed on spinal loads in persons with LLA is of particular interest here. Three-dimensional trunk-pelvic kinematics, collected during level-ground walking at self-selected (SSW) and two controlled speeds (∼1...
November 28, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29211872/misplacement-of-stent-into-epidural-venous-plexus-with-resultant-cauda-equina-syndrome-and-open-surgical-treatment-a-case-report
#4
Benjamin B Whiting, Celene B Mulholland, Lorin Daniels, U Kumar Kakarla, Nicholas Theodore, Laura A Snyder
BACKGROUND AND IMPORTANCE: Endovascular therapy has proven to be a safe, minimally invasive treatment for multiple etiologies, but proper precautions must be taken to avoid complications. When complications occur, they should be promptly identified and corrected when possible. This case report describes endovascular stents misplaced into the epidural spinous venous plexus rather than the iliofemoral arteries, causing cauda equina syndrome, as well as the spinal procedure performed to treat the resulting spinal canal compression...
December 2, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29203971/incidence-of-spinal-epidural-lipomatosis-in-patients-with-spinal-stenosis
#5
Jason Bradley Malone, Patrick Jon Bevan, Todd Jay Lewis, Andrew David Nelson, Doug Edward Blaty, Michael Eastland Kahan
Inroduction: Spinal Epidural Lipomatosis (SEL) is believed to be a rare disorder. The incidence and prevalence of clinically symptomatic SEL in patients with spinal stenosis has never been reported in the literature. Our study aims to determine the prevalence, incidence, and associated risk factors of SEL in patients with the diagnosis of spinal stenosis. Methods: This is a retrospective study. We reviewed the charts of 831 patients with the diagnosis of spinal stenosis over a 30 month period...
March 2018: Journal of Orthopaedics
https://www.readbyqxmd.com/read/29203308/magnetic-resonance-imaging-undetectable-epiduroscopic-hotspot-in-chronic-discogenic-back-pain-does-sinuvertebral-neuropathy-actually-exists
#6
Sung Ho Choi, Nitin Adsul, Hyeun Sung Kim, Jee-Soo Jang, Il-Tae Jang, Seong-Hoon Oh
BACKGROUND: The causes of chronic discogenic back pain have not yet been clearly identified. Neural ingrowth around the annulus is widely considered to be one of the possible cause. However, neuropathy around the annulus has yet to be observed visually. We report a case of a hotspot that was observed in an epiduroscopic view, but not in imaging findings. CASE DESCRIPTION: A 46-year-old woman was admitted with pain in the back, left buttock, and posterior thigh for 2 years...
December 1, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29202859/complications-of-lumbar-disc-herniations-following-trans-sacral-epiduroscopic-lumbar-decompression-a-single-center-retrospective-study
#7
Seung-Kook Kim, Su-Chan Lee, Seung-Woo Park, Eun-Sang Kim
BACKGROUND: Trans-sacral epiduroscopic lumbar decompression (SELD) is an emerging procedure for the treatment of lumbar disc herniation (LDH), with favorable outcomes having been reported. However, the complications associated with SELD have not been comprehensively evaluated to date. Therefore, the aim of our study was to describe the incidence rate, types, and characteristics of complications following SELD and management outcomes. METHODS: Retrospective analysis of the surgical and clinical outcomes for 127 patients (average age, 42...
December 4, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29202297/finite-element-investigation-of-the-effect-of-nucleus-removal-on-vibration-characteristics-of-the-lumbar-spine-under-a-compressive-follower-preload
#8
Wei Fan, Li-Xin Guo
Previous studies have reported the effect of removing the nucleus on biomechanical responses of the human spine to static loadings. However, few studies have dealt with the whole-body vibration condition. The purpose of this study was to investigate the effect of a single-level (L4-L5) nucleus removal on vibration characteristics of the whole lumbar spine in the presence of a physiologic compressive preload, and also to evaluate the preload effect on the vibration characteristics. A 3-D non-linear finite element model of the lumbar spine (L1 to sacrum) subjected to the physiologic conditions of a compressive follower preload was developed and validated...
November 26, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29201820/clinical-usefulness-of-x-ray-findings-for-non-specific-low-back-pain-in-korean-farmers-farm-study
#9
Eun Kyoung Kang, Hee-Won Park, Sung Hyun Kim, Sora Baek
Objective: To elucidate the association between non-specific low back pain (NSLBP) and spinal X-ray findings in Korean farmers: Farmers' Cohort for Agricultural Work-Related Musculoskeletal disorders (FARM) study. Methods: A total of 835 farmers (391 males, 444 females; mean age, 56.6±7.4 years) without red-flag signs of specific LBP were recruited. Presence of LBP more than one week or once a month with more than moderate degree of pain severity during the last year was assessed with a binary questionnaire (yes or no)...
October 2017: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/29201819/asymmetric-atrophy-of-paraspinal-muscles-in-patients-with-chronic-unilateral-lumbar-radiculopathy
#10
Jinmann Chon, Hee-Sang Kim, Jong Ha Lee, Seung Don Yoo, Dong Hwan Yun, Dong Hwan Kim, Seung Ah Lee, Yoo Jin Han, Hyun Seok Lee, Young Rok Han, Seonyoung Han, Yong Kim
Objective: To assess the cross-sectional area (CSA) of the muscles for investigating the occurrence of asymmetry of the paraspinal (multifidus and erector spinae) and psoas muscles and its relation to the chronicity of unilateral lumbar radiculopathy using magnetic resonance imaging (MRI). Methods: This retrospective study was conducted between January 2012 to December 2014. Sixty one patients with unilateral L5 radiculopathy were enrolled: 30 patients had a symptom duration less than 3 months (group A) and 31 patients had a symptom duration of 3 months or more (group B)...
October 2017: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/29198368/trunk-musculoskeletal-response-in-maximum-voluntary-exertions-a-combined-measurement-modeling-investigation
#11
F Ghezelbash, Z El Ouaaid, A Shirazi-Adl, A Plamondon, N Arjmand
Maximum voluntary exertion (MVE) tasks quantify trunk strength and maximal muscle electromyography (EMG) activities with both clinical and biomechanical implications. The aims here are to evaluate the performance of an existing trunk musculoskeletal model, estimate maximum muscle stresses and spinal forces, and explore likely differences between males and females in maximum voluntary exertions. We, therefore, measured trunk strength and EMG activities of 19 healthy right-handed subjects (9 females and 10 males) in flexion, extension, lateral and axial directions...
November 21, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29193823/striated-perineal-muscles-location-of-somatic-and-autonomic-neurons-projecting-to-the-male-pig-ischiocavernous-muscle-neurochemical-features-of-the-sympathetic-subset
#12
Maddalena Botti, Luisa Ragionieri, Antonio Cacchioli, Rino Panu, Ferdinando Gazza
The location, number and size of the central and peripheral neurons innervating the ischiocavernous muscle (ICM) were studied in male pigs by means of Fast Blue (FB) retrograde neuronal tracing. Moreover the immunohistochemical properties of the sympathetic ganglia were investigated combining the double immunolabelling method. After injection of FB into the left ICM, a mean number of 245.3±134.9 labelled neurons were found in the ipsilateral ventral horn of the S1-S3 segments of the spinal cord (SC), 129.7±45...
November 29, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29191530/acute-bilateral-isolated-foot-drop-changing-the-paradigm-in-management-of-degenerative-spine-surgery-with-percutaneous-endoscopy
#13
Nitin Adsul, Hyeun Sung Kim, Sung Ho Choi, Jee-Soo Jang, Il-Tae Jang, Seong-Hoon Oh
BACKGROUND: Acute bilateral isolated foot drop due to Lumbar disc prolapse with canal stenosis is very rare with only three cases reported in literature. Our patient was managed using the percutaneous full endoscopic technique. This is mainly to highlight the ease of access and patient outcome with pre and postoperative images to support our minimally invasive treatment for this rare condition. CASE DESCRIPTION: A 46-year-old male presented with sudden onset severe back pain with bilateral foot drop...
November 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29191121/a-grade-iv-isthmic-spondylolisthesis
#14
Morey J Kolber, William J Hanney
A 15-year-old adolescent boy was referred by an orthopaedic surgeon for treatment of right gluteal and thigh pain. Following treatment that reduced his pain, he experienced acute onset of bilateral radiculopathy. He was referred back to the physician, who ordered radiographs and magnetic resonance imaging, which identified a grade IV isthmic spondylolisthesis at the L5-S1 level. J Orthop Sports Phys Ther 2017;47(12):971. doi:10.2519/jospt.2017.7547.
December 2017: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29189570/facet-sagittal-orientation-possible-role-in-the-pathology-of-degenerative-lumbar-spinal-stenosis
#15
Xiang Liu, Xiaodong Zhao, Yaowu Long, Kai Huang, Dazhi Xie, Feng Wang, Guangfu Chen, Zhirui Yuan, Jixing Wang
STUDY DESIGN: A retrospective case-control study OBJECTIVE.: This study aimed to elucidate the association between facet joint orientation and degenerative lumbar spinal stenosis (DLSS). SUMMARY OF BACKGROUND DATA: Many studies have demonstrated the relationship between sagittal facet orientation and degenerative lumbar spondylolisthesis. However, the associations between facet orientation and DLSS have rarely been studied. METHODS: Ninety-one age-matched and sex-matched patients with DLSS (LSS group) and 91 control participants were consecutively enrolled...
November 17, 2017: Spine
https://www.readbyqxmd.com/read/29189495/lumbar-spine-anatomy-in-women-sustaining-unintentional-dural-puncture-during-labor-epidural-placement-a-descriptive-study-using-magnetic-resonance-imaging-and-ultrasound
#16
Nicholas M Barrett, Cristian Arzola, Timo Krings, Kristi Downey, Jose C A Carvalho
BACKGROUND AND OBJECTIVES: Unintentional dural puncture is one of the most frequent complications of the epidural technique. One previous study suggested that atypical sonoanatomy of the ligamentum flavum/dura mater unit may be a risk factor for this complication. In this study, we describe the anatomy of the lumbar spine, assessed by magnetic resonance imaging (MRI) and ultrasound, in women sustaining unintentional dural puncture during epidural catheter placement for labor analgesia...
November 15, 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/29181575/is-l5-s1-motion-segment-different-from-the-rest-a-radiographic-kinematic-assessment-of-72-patients-with-chronic-low-back-pain
#17
Ashutosh B Sabnis, Uphar Chamoli, Ashish D Diwan
PURPOSE: The relationship between biomechanical instability and degenerative changes in the lumbar spine in chronic low back pain (CLBP) patients remains controversial. The main objective of this retrospective radiographical study was to evaluate changes in kinematics at different lumbar levels (in particular the L5-S1 level) with progressive grades of disc degeneration and facet joint osteoarthritis in CLBP patients. METHODS: Using standing neutral and dynamic flexion/extension (Fx/Ex) radiographs of the lumbar spine, in vivo segmental kinematics at L1-L2 through L5-S1 were evaluated in 72 consecutive CLBP patients...
November 27, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29181342/early-loosening-of-spinal-rod-in-a-case-of-degenerative-grade-1-spondylolisthesis-treated-with-unilateral-pedicle-screw-fixation-and-transforaminal-cage-for-interbody-fusion
#18
Prasoon Kumar, Vishal Kumar, Rakesh John, Rajbahadur Sharma
Introduction: Unilateral pedicle screw fixation and transforaminal cage for interbody fusion are well-established form of treatment for lumbar spondylolisthesis. It is cost effective and has shown to have a comparable outcome to bilateral pedicle screw fixation. We present a case of unilateral pedicle screw fixation and transforaminal cage for interbody fusion in a patient of Grade 1 Degenerative spondylolisthesis who had an early implant failure, and try to assess the possible events leading to it...
July 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/29180112/mri-evaluation-of-the-effects-of-extension-exercises-on-the-disc-fluid-content-and-location-of-the-centroid-of-the-fluid-distribution
#19
Vahid Abdollah, Eric C Parent, Michele C Battié
BACKGROUND: McKenzie prone press-up exercises have been hypothesised to reduce intradiscal pressure, allowing fluid to be reabsorbed into the disc, which could improve the internal stability and local chemical milieu of the disc, potentially reducing symptoms. OBJECTIVE: To investigate the immediate effects of prone press-up exercises on lumbar disc fluid content and movement. DESIGN: Quantification of MRI changes before and after a single exercise session...
November 21, 2017: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/29179284/-analysis-of-correlation-between-spinal-nerve-high-tension-and-disc-degeneration-in-100-cases
#20
Q J Kong, X M Xu, J C Sun, Y Wang, G D Shi, Y F Guo, H S Yang, Y Yang, J G Shi
Objective: To explore the correlation between the spinal nerve high tension and lumbar disc degeneration, the pathogenesis of hanging intervertebral disc degeneration. Methods: From June 2016 to June , a retrospective analysis 2017 of 100 cases of lumbar spinal stenosis were included in Department of Spine Surgery, Changzheng Hospital, the Second Military Medical University. They were divided into experimental group (50 cases, nerve high tension group) and control group (50 cases, nervous tension in the normal group) according to preoperative lumbar MRI of cauda equina syndrome and settlement of intraoperative detecting nerve tension...
November 21, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
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