scholarly journals Measuring spinal canal size in lumbar spinal stenosis: description of method and preliminary results

10.14444/2008 ◽  
2015 ◽  
Vol 9 ◽  
pp. 8 ◽  
Author(s):  
Andrew Hughes ◽  
Serik K. Makirov ◽  
Valentin Osadchiy
Keyword(s):  
Spinal Stenosis ◽  
Lumbar Spinal Stenosis ◽  
Spinal Canal ◽  
Preliminary Results ◽  
Lumbar Spinal

scholarly journals Intraoperative Myelography in Transpsoas Lateral Lumbar Interbody Fusion for Degenerative Lumbar Spinal Stenosis: A Preliminary Prospective Study

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Yang Yang ◽  
Liangming Zhang ◽  
Jianwen Dong ◽  
Zihao Chen ◽  
Peigen Xie ◽  
...  
Keyword(s):  
Spinal Stenosis ◽  
Lumbar Spinal Stenosis ◽  
Spinal Canal ◽  
Interbody Fusion ◽  
Lumbar Interbody Fusion ◽  
Degenerative Lumbar Spinal Stenosis ◽  
Lateral Lumbar Interbody Fusion ◽  
Radiological Parameters ◽  
One Year ◽  
Lumbar Spinal

Aim. To investigate the feasibility and effectiveness of intraoperative myelography in determining adequacy of indirect spinal canal decompression during transpsoas lateral lumbar interbody fusion (LLIF). Methods. Seven patients diagnosed with degenerative lumbar spinal stenosis (DLSS) were prospectively included to this study. All patients underwent LLIF and subsequently received intraoperative myelography to determine the effect of indirect spinal canal decompression, which was visualized in both anterior-posterior and lateral images. Those patients with insufficient indirect canal decompression were further resolved by microendoscopic canal decompression (MECD). Radiological parameters, including stenosis ratio and dural sac area of operated levels, were measured and compared before and after operation. Besides, all patients were followed up for at least one year using visual analogue scale (VAS) for back and leg, Japanese Orthopaedic Association score (JOA), and Oswestry disability index (ODI). Results. Seven patients with 8 operated levels underwent LLIF safely and demonstrated significant symptom relief postoperatively. Five operated levels showed adequate indirect canal decompression intraoperatively, while the remaining three levels did not achieve the adequacy, and their residual stenosis was resolved following MECD. Radiological parameters were improved statistically when compared with preoperation (P<0.05). Furthermore, neurological symptoms of all patients were also improved significantly (P<0.05), shown by improved VAS (back and leg), JOA, and ODI at both two-week and one-year follow-up. Conclusions. Intraoperative myelography during LLIF is able to assess adequacy of indirect canal decompression for DLSS, thus promising favorable clinical outcomes.

scholarly journals Comparative Study Between Uniportal Full-Endoscopic Interlaminar and Tubular Approach in the Treatment of Lumbar Spinal Stenosis: A Pilot Study

2020 ◽  
Vol 10 (2_suppl) ◽  
pp. 70S-78S
Author(s):  
Angela Carrascosa-Granada ◽  
Willian Velazquez ◽  
Ralf Wagner ◽  
Anwar Saab Mazzei ◽  
Andrés Vargas-Jimenez ◽  
...  
Keyword(s):  
Clinical Improvement ◽  
Spinal Stenosis ◽  
Lumbar Spinal Stenosis ◽  
Spinal Canal ◽  
Endoscopic Approach ◽  
Endoscopic Technique ◽  
Dural Sac ◽  
Lumbar Spinal ◽  
Endoscopic Group

Study Design: Multicenter, prospective, randomized, and double-blinded study. Objectives: To compare tubular and endoscopic interlaminar approach. Methods: Patients with lumbar spinal stenosis and neurogenic claudication of were randomized to tubular or endoscopic technique. Enrollment period was 12 months. Clinical follow up at 1, 3, 6 months after surgery with visual analogue scale (VAS), Oswestry Disability Index (ODI), and Japanese Orthopedic Association (JOA) score. Radiologic evaluation with magnetic resonance pre- and postsurgery. Results: Twenty patients were enrolled: 10 in tubular approach (12 levels) and 10 in endoscopic approach (11 levels). The percentage of enlargement of the spinal canal was higher in endoscopic approach (202%) compared with tubular approach (189%) but was not statistically significant ( P = .777). The enlargement of the dural sac was higher in endoscopic group (209%) compared with tubular group (203%) but no difference was found between the 2 groups ( P = .628). A modest significant correlation was found between the percentage of spinal canal decompression and enlargement of the dural sac ( r = 0.5, P = .023). Both groups reported a significant clinical improvement postsurgery. However, no significant association was found between the percentage of enlargement of the spinal canal or the dural sac and clinical improvement as determined by scales scores. Endoscopic group had lower intrasurgical bleeding ( P < .001) and lower disability at 6 months of follow-up than tubular group (p=0.037). Conclusions: In the treatment of lumbar spinal stenosis, endoscopic technique allows similar decompression of the spinal canal and the dural sac, lower intrasurgical bleeding, similar symptoms improvement, and lower disability at 6 months of follow-up, as compared with the tubular technique.

Kinematic effects of a pedicle-lengthening osteotomy for the treatment of lumbar spinal stenosis

2012 ◽  
Vol 17 (4) ◽  
pp. 314-320 ◽  
Author(s):  
Ali Kiapour ◽  
D. Greg Anderson ◽  
David B. Spenciner ◽  
Lisa Ferrara ◽  
Vijay K. Goel
Keyword(s):  
Spinal Stenosis ◽  
Lumbar Spinal Stenosis ◽  
Spinal Canal ◽  
Neural Foramen ◽  
Cross Sectional ◽  
Kinematic Behavior ◽  
Lengthening Osteotomy ◽  
Spine Model ◽  
The Cross ◽  
Lumbar Spinal

Object Lumbar spinal stenosis (LSS) may lead to disabling neurogenic symptoms and has traditionally been treated using open laminectomy. A new technique for correcting LSS involves lengthening the lumbar pedicles through bilateral percutaneous pedicle osteotomies. In this paper, the authors' goal was to evaluate the changes in spinal canal dimensions and kinematic behavior after pedicle-lengthening osteotomies. Methods The kinematic behavior of 8 cadaveric lumbar segments was evaluated intact and after bilateral pedicle-lengthening osteotomies at the L-4, L-5, and L-4 and L-5 levels. Testing was conducted with and without a compressive preload using a custom kinematic apparatus that allowed for 3D tracking of each vertebra during flexion-extension, right-left bending, and right-left rotation. A validated finite element (FE) spine model was used to measure the changes in the cross-sectional area of the spinal canal and neural foramen after 2-, 3-, and 4.5-mm simulated pedicle-lengthening osteotomy procedures. Results The overall and segmental kinematics were not significantly altered after the pedicle-lengthening osteotomy procedure at the L-4 and/or L-5 pedicles. The kinematic signatures of the intact and lengthened states were similar for all motion pairs. The FE spine model yielded kinematics predictions within or close to the 95% confidence interval for the cadaveric data. The FE spine demonstrated substantial, pedicle length–dependent enlargement of the cross-sectional areas of the spinal canal and neural foramen after simulated pedicle lengthening. Conclusions Bilateral pedicle-lengthening osteotomies produced substantial increases in the cross-sectional areas of the spinal canal and neural foramen without significantly altering normal spinal kinematics. This technique deserves further study as a less invasive treatment option for LSS.

scholarly journals MINIMALLY INVASIVE SPINAL CANAL RECONSTRUCTION FOR DEGENERATIVE LUMBAR SPINAL STENOSIS

2017 ◽  
Vol 14 (3) ◽  
pp. 67-73 ◽  
Author(s):  
Valery Lebedev ◽  
◽  
Dmitry Epifanov ◽  
Gleb Kostenko ◽  
Tousif Ghodivala ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Spinal Stenosis ◽  
Lumbar Spinal Stenosis ◽  
Spinal Canal ◽  
Degenerative Lumbar Spinal Stenosis ◽  
Lumbar Spinal

scholarly journals ASSESSMENT OF THE DEGREE OF SPINAL CANAL NARROWING IN LUMBAR SPINAL STENOSIS

2018 ◽  
pp. 57-64
Author(s):  
Serik Kaliulovich Makirov ◽  
Valentin Alekseyevich Osadchy ◽  
Andrey Anatolyevich Yuz
Keyword(s):  
Spinal Stenosis ◽  
Lumbar Spinal Stenosis ◽  
Spinal Canal ◽  
Lumbar Spinal

X-RAY AND MAGNETIC RESONANCE IMAGING FEATURES IN PATIENTS WITH ACQUIRED LUMBAR SPINAL STENOSIS

2018 ◽  
Vol 8 (6) ◽  
pp. 151-156
Author(s):  
Trung Hoang Van ◽  
Cuong Le Van Ngoc
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Spinal Stenosis ◽  
Lumbar Spinal Stenosis ◽  
Spinal Canal ◽  
Resonance Imaging ◽  
X Ray ◽  
Canal Stenosis ◽  
Lumbar Spinal Canal ◽  
Lumbar Spinal

Background: Lumbar spinal stenosis often associates with chronic pain described the abnormal narrowing of the lumbar spinal canal, resulting in compression of neural elements within the central spinal canal or the lateral recesses or the root canals or coordinate with each other. The purpose of this study was to describe and compare the plain X-ray and magnetic resonance imaging features of lumbar canal stenosis. Materials and methods: This was a cross-sectional study of 78 patients with an acquired lumbar spinal canal between October 2017 and May 2018. Results: The X-rays confirmed osteophytes in 92.3%, endplate sclerosis in 88.5% and disc space narrowing 62.8%. On MRI, 213 lumbar levels were lumbar spinal canal stenosis, 181 lumbar levels were evaluated for the grade of central spinal canal stenosis. Conclusions: X-ray examination has limitations in a diagnosis of lumbar spinal stenosis but also serves as a diagnostic aid. MRI is well diagnosed as spinal pathology as well as lumbar spinal stenosis. Key words: Lumbar spinal, Lumbar spinal stenosis, Magnetic resonance imaging (MRI), X-ray, Grading

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