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stenotic spinal canal

Young Uk Kim, Jun Young Park, Doo Hwan Kim, Myung-Hwan Karm, Jae-Young Lee, Jee In Yoo, Sung Won Chon, Jeong Hun Suh
BACKGROUND: Hypertrophy of the ligamentum flavum (LF) has been considered as a major cause of lumbar central spinal stenosis (LCSS). Previous studies have found that ligamentum flavum thickness (LFT) is correlated with aging, disc degeneration, and lumbar spinal stenosis. However, hypertrophy is different from thickness. Thus, to evaluate hypertrophy of the whole LF, we devised a new morphological parameter, called the ligamentum flavum area (LFA). OBJECTIVES: We hypothesized that the LFA is a key morphologic parameter in the diagnosis of LCSS...
March 2017: Pain Physician
Wenxiang Zhong, Jichao Wang, Wenchuan Zhang, Pengfei Liu, Massimiliano Visocchi, Shi-Ting Li
Objective We aimed to study the clinical value of magnetic resonance imaging (MRI) and electrophysiological studies in the diagnosis of lumbar disc herniation and in the evaluation of the therapeutic effect of discectomy. Methods In this study, 265 patients with LDH were treated with discectomy after assessment by the Japanese Orthopedic Association (JOA) score, MRI, and electrophysiological studies. All the patients were followed-up for 6 years. The effects of the operation were assessed by determining the angle between the nerve root canal and disc protrusion (AN value), the stenotic ratio of the spinal canal, the width of the lateral recess, motor conduction velocity (MCV), sensory conduction velocity (SCV), and nerve action potential (NAP) before and after operation...
2017: Acta Neurochirurgica. Supplement
Mustafa Farooque, Michele M Salzman, Zhan Ye
BACKGROUND: As our population ages, neurogenic claudication (NC) from central canal stenosis of the lumbar spine is becoming an increasingly common condition. Studies have been undertaken to assess the efficacy of caudal, interlaminar, or unilateral transforaminal epidural injections, but bilateral transforaminal epidural injections (BTESIs) have not been evaluated to date. OBJECTIVE: To assess the therapeutic value and long-term effects of fluoroscope-guided BTESIs in patients with NC from degenerative lumbar spinal stenosis (DLSS) of the central spinal canal...
January 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
Martin Merkle, Gottlieb Maier, Sören Danz, Jan Kaminsky, Marcos S Tatagiba, Nader M Hebela, Florian Roser
OBJECTIVE: MRI is regarded as the study of choice in the diagnosis of lumbar spinal stenosis. In some cases, the supine MRI leads to a misdiagnosis in the extent of lumbar spinal stenosis. Dynamic myelography can detect lumbar spinal stenosis in these cases of where the MRI may not be as sensitive. To compare the sensitivities of dynamic radiographic myelography and supine MRI in lumbar canal stenosis (LCS) patients and to determine whether dynamic radiographic myelography is a valuable diagnostic exam in the work-up of lumbar canal stenosis...
April 2016: Clinical Neurology and Neurosurgery
Uzeyir Ahmadli, Nils H Ulrich, Yao Yuqiang, Daniel Nanz, Johannes Sarnthein, Spyros S Kollias
The purpose of this study was to investigate the usefulness of diffusion tensor imaging (DTI) for early detection of pathological alterations in the myelon in patients with cervical spondylotic myelopathy (CSM) without T2-weighted imaging (T2W) signal abnormalities but with a narrowed spinal canal with corresponding clinical correlation. Axial DTI at 1.5T together with routine magnetic resonance imaging was performed on 18 patients fulfilling above mentioned criteria. Quantitative fractional anisotropy (FA) and apparent diffusion coefficient (ADC) maps were generated...
October 2015: Neuroradiology Journal
Young Uk Kim, Yu-Gyeong Kong, Jonghyuk Lee, Yuseon Cheong, Se hun Kim, Hyun Kyu Kim, Jun Young Park, Jeong Hun Suh
PURPOSE: This study aimed to investigate the association between the clinical symptoms of central lumbar spinal stenosis (CLSS) and morphological parameters using magnetic resonance imaging (MRI) data. METHODS: We retrospectively reviewed 117 patients who visited our pain clinic from 2009 to 2013 and were diagnosed as CLSS. All patients underwent MRI of the L-spine and we measured the dural sac cross-sectional area (DSA), spinal canal cross-sectional area (SCA), ligamentum flavum cross-sectional area (LFA) and ligamentum flavum thickness (LFT) at the most stenotic intervertebral level on MRI...
October 2015: European Spine Journal
S-Y Kim, M J Shin, J H Chang, C-H Lee, Y-I Shin, Y B Shin, H-Y Ko
STUDY DESIGN: This is a cross-sectional study. OBJECTIVES: The goal of this study was to characterize the diffusion properties across segments of the spinal cord and peak cerebrospinal fluid (CSF) velocities in the stenotic spinal canal, and to determine the correlation between these properties and clinical and electrophysiological parameters in patients with cervical spinal cord injury (SCI). SETTING: This study was conducted in the University teaching hospital...
August 2015: Spinal Cord
Julio J Jauregui, Samik Banerjee, Kimona Issa, Jeffrey J Cherian, Michael A Mont
Degenerative lumbar spinal stenosis (LSS) is a cause for substantial morbidity in the elderly population: many often undergo total hip arthroplasty for associated hip arthritis. With a matched cohort we investigated the effect of co-existing LSS on aseptic survivorship, functional outcomes, activity levels, overall subjective physical and mental health status, and satisfaction rates in patients undergoing primary THA. The aseptic-implant survivorship was similar in LSS and non-stenosis cohort. Although both cohorts significantly improved, the LSS cohort achieved lower improvements in HHS, UCLA, SF-36 physical, and satisfaction rates than the matched non-stenotic cohort...
September 2015: Journal of Arthroplasty
Andrew Hughes, Serik K Makirov, Valentin Osadchiy
BACKGROUND: Lumbar spinal stenosis is a pathological condition of the spinal channel with its concentric narrowing with presence of specific clinical syndrome. Absence of the clear unified radiological signs is the one of the basic problems of the lumbar spinal stenosis. PURPOSE: The authors seek to create method of assessment of the spinal canal narrowing degree, based on anatomical aspects of lumbar spinal stenosis. STUDY DESIGN: Development of diagnostic criteria based on analysis of a consecutive patients group and a control group...
2015: International Journal of Spine Surgery
Hongli Wang, Fei Zou, Jianyuan Jiang, Feizhou Lu, Wenjun Chen, Xiaosheng Ma, Xinlei Xia, Lixun Wang
STUDY DESIGN: A retrospective clinical data analysis. OBJECTIVE: This study was conducted to investigate the correlation between ossification of the nuchal ligament (ONL) and pathological changes of the cervical spine in patients with cervical spondylosis. SUMMARY OF BACKGROUND DATA: ONL can usually be found in cervical spondylosis. Thus, it is important to find the correlation between ONL and pathological changes of the cervical spine in patients with cervical spondylosis...
December 15, 2014: Spine
Luigi Manfré
Lumbar spinal canal stenosis (LSCS) is one of the most common degenerative diseases in elderly patients. Failure of he treatment can occur, generally related to bone remodelling/fracture of spinous processes. PMMA augmentation of the posterior arch (spinoplasty, SP) has recently been proposed in case of neoplastic involvement. This study evaluated the efficacy of SP as a prophylactic treatment before introducing an interspinous spacer (IS). Moreover, we consider the possibility to treat patients who previously underwent IS implants with subsequent failure of the device, by introducing a second spacer at the same level, performing accessory SP...
October 31, 2014: Interventional Neuroradiology
Ho-Joong Kim, Jae-Young Park, Kyoung-Tak Kang, Bong-Soon Chang, Choon-Ki Lee, Jin S Yeom
INTRODUCTION: In a preference-based shared decision-making system, several subjective and/or objective factors such as pain severity, degree of disability, and the radiological severity of canal stenosis may influence the final surgical decision for the treatment of lumbar spinal stenosis (LSS). However, our understanding of the shared decision-making process and the significance of each factor remain primitive. In the present study, we aimed to investigate which factors influence the surgical decision for the treatment of LSS when using a preference-based, shared decision-making process...
February 2015: European Spine Journal
James Milburn, Jeffrey Freeman, Andrew Steven, Wilson Altmeyer, Dennis Kay
BACKGROUND: Interlaminar epidural steroid injections (ILESIs) are commonly employed in the management of patients with symptomatic degenerative lumbar spinal canal stenosis despite little experimental evidence to guide technique optimization. One untested performance parameter is the intervertebral level at which the ILESI should be performed for maximum patient relief. METHODS: This study randomized patients with symptomatic degenerative lumbar spinal canal stenosis to receive an ILESI at the level of maximal spinal canal stenosis or at a normal/less stenotic intervertebral site 2 intervertebral levels cephalad to the level of maximal stenosis...
2014: Ochsner Journal
Kazunori Nomura, Munehito Yoshida
The objective of this study was to evaluate the efficacy of a microendoscopic spinal decompression surgical technique using a novel approach for the treatment of lumbar spinal canal stenosis (LSCS). The following modifications were made to the conventional microendoscopic bilateral decompression via the unilateral approach: the base of the spinous process was first resected partially to secure a working space, so as not to separate the spinous process from the lamina. The tip of the tubular retractor was placed at the midline of the lamina, where laminectomy was performed microendoscopically...
June 2012: Global Spine Journal
J G Janes, K S Garrett, K J McQuerry, A P Pease, N M Williams, S M Reed, J N MacLeod
REASONS FOR PERFORMING STUDY: The sensitivity and specificity of lateral cervical radiographs to evaluate horses suspected of cervical stenotic myelopathy (CSM) are limited by the assessment being restricted to the sagittal plane. OBJECTIVE: To determine whether magnetic resonance imaging (MRI) allows for a more accurate identification of stenosis than lateral cervical radiographs in horses with CSM. STUDY DESIGN: Case control study. METHODS: Nineteen Thoroughbred horses with CSM (17 males, 2 females, age 6-50 months) were compared to 9 control Thoroughbreds (6 males, 3 females, age 9-67 months)...
November 2014: Equine Veterinary Journal
Alessandro Landi, Lorenzo Nigro, Nicola Marotta, Cristina Mancarella, Pasquale Donnarumma, Roberto Delfini
Spinal spondylosis is an extremely common condition that has only rarely been described as a cause of syringomyelia. We describe a case of syringomyelia associated with cervical spondylosis admitted at our division and treated by our institute. It is the case of a 66-year-old woman. At our observation she was affected by moderate-severe spastic tetraparesis. T2-weighted magnetic resonance imaging (MRI) showed an hyperintense signal within spinal cord from C3 to T1 with a more sharply defined process in the inferior cervical spinal cord...
June 16, 2013: World Journal of Clinical Cases
Scott D Wait, M Yashar S Kalani, Andrew S Little, Giac D Consiglieri, Jeffrey S Ross, Matthew R Kucia, Volker K H Sonntag, Nicholas Theodore
OBJECT: Patients who develop a lower-extremity neurological deficit after lumbar laminectomy present a diagnostic dilemma. In the setting of a neurological deficit, some surgeons use MRI to evaluate for symptomatic compression of the thecal sac. The authors conducted a prospective observational cohort study in patients undergoing open lumbar laminectomy for neurogenic claudication to document the MRI appearance of the postlaminectomy spine and to determine changes in thecal sac diameter caused by the accumulation of epidural fluid...
January 2014: Journal of Neurosurgery. Spine
Kunio Yokoyama, Masahiro Kawanishi, Makoto Yamada, Hidekazu Tanaka, Yutaka Ito, Masashi Hirano, Shinji Kawabata, Toshihiko Kuroiwa
OBJECTIVE: The postoperative time course of redundant nerve roots (RNRs) in patients with lumbar spinal canal stenosis (LSCS) is currently unknown. The purpose of this study is to investigate the relationship between postoperative morphologic changes in detected RNRs and the clinical outcome of patients with LSCS. METHODS: A total of 33 symptomatic patients with LSCS who demonstrated RNRs on magnetic resonance imaging (MRI) were treated with decompressive laminectomy alone...
December 2014: World Neurosurgery
M Koda, T Rokkaku, C Mannoji, Y Okamoto, T Kon, M Murakami, T Furuya, M Yamazaki
A redundant nerve root is defined as a large, elongated and tortuous nerve root commonly associated with severe lumbar spinal canal stenosis. Elongation of nerve roots as a result of mechanical trapping at stenotic level is assumed to be a possible mechanism. Here we present a case in a patient who showed a redundant nerve root above the level of a lumbar canal stenosis caused by disk herniation and redundancy spontaneously migrating to a lower lumbar stenosis level accompanied by absorption of the herniated disk as shown by magnetic resonance imaging (MRI)...
November 2012: Neuroradiology Journal
L Penning
This paper deals with the effect of motion upon the stenotic lumbar spinal canal and its contents. A review is presented of personal investigations and relevant data from the literature. The normal spinal canal and its lateral recesses are naturally narrowed by retroflexion and/or axial loading, as shown by anatomical, myelographic and computerized tomographic studies. Due to enough free play and protection by safety cushions, cauda equina and exiting nerve roots are not endangered. In stenosis this protection is lost, causing clinical symptoms of nervous compression of a posture-dependent character...
February 1992: Clinical Biomechanics
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