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https://www.readbyqxmd.com/read/28634513/correlation-of-lumbar-lateral-recess-stenosis-in-magnetic-resonance-imaging-and-clinical-symptoms
#1
Annina Splettstößer, M Fawad Khan, Bernd Zimmermann, Thomas J Vogl, Hanns Ackermann, Marcus Middendorp, Adel Maataoui
AIM: To assess the correlation of lateral recess stenosis (LRS) of lumbar segments L4/5 and L5/S1 and the Oswestry Disability Index (ODI). METHODS: Nine hundred and twenty-seven patients with history of low back pain were included in this uncontrolled study. On magnetic resonance images (MRI) the lateral recesses (LR) at lumbar levels L4/5 and L5/S1 were evaluated and each nerve root was classified into a 4-point grading scale (Grade 0-3) as normal, not deviated, deviated or compressed...
May 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28632563/why-lumbar-artificial-disk-replacements-ladrs-fail
#2
Kenneth Pettine, Robert Ryu, Fernando Techy
STUDY DESIGN: A retrospective review of prospectively collected data. OBJECTIVE: To determine why artificial disk replacements (ADRs) fail by examining results of 91 patients in FDA studies performed at a single investigational device exemption (IDE) site with minimum 2-year follow-up. SUMMARY OF BACKGROUND DATA: Patients following lumbar ADR generally achieve their 24-month follow-up results at 3 months postoperatively. MATERIALS AND METHODS: Every patient undergoing ADR at 1 IDE site by 2 surgeons was evaluated for clinical success...
July 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28632492/is-the-location-of-the-signal-intensity-weighted-centroid-a-reliable-measurement-of-fluid-displacement-within-the-disc
#3
Vahid Abdollah, Eric C Parent, Michele C Battié
Degenerated discs have shorter T2-relaxation time and lower MR signal. The location of the signal-intensity-weighted-centroid reflects the water distribution within a region-of-interest (ROI). This study compared the reliability of the location of the signal-intensity-weighted-centroid to mean signal intensity and area measurements. L4-L5 and L5-S1 discs were measured on 43 mid-sagittal T2-weighted 3T MRI images in adults with back pain. One rater analysed images twice and another once, blinded to measurements...
June 20, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28631069/-s2-ala-iliac-screws-for-extended-pelvic-fixation-in-longer-lumbar-instrumentations-description-of-a-freehand-technique
#4
REVIEW
F Lattig, S Weckbach
OBJECTIVE: To reduce the rate of implant failures at the lumbosacral junction in polysegmental lumbar fusions. INDICATIONS: Spinal fusion with deformity correction including L5/S1, revision surgery for pseudoarthrosis L5/S1, screw pull-out and pedicle fractures in S1, and S1/S2 fractures after polysegmental fusions. CONTRAINDICATIONS: Osteosynthesis of complex pelvic ring fractures, tumors of the ilium. Relative contraindication: infection, to avoid contamination of the iliosacral joint...
June 19, 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/28626329/effects-of-high-intensity-laser-therapy-on-pain-and-function-of-patients-with-chronic-back-pain
#5
Hyeun-Woo Choi, Jongmin Lee, Sangyong Lee, Jioun Choi, Kwansub Lee, Byung-Kon Kim, Gook-Joo Kim
[Purpose] This study examined the effects of High Intensity Laser Therapy on pain and function of patients with chronic back pain. [Subjects and Methods] This study evenly divided a total of 20 patients with chronic back pain into a conservative physical therapy group that received conservative physical therapy, and a high intensity laser therapy group that received High Intensity Laser Therapy after conservative physical therapy. All patients received the therapy three times a week for four weeks. For the high intensity laser therapy group, treatment was applied to the L1-L5 and S1 regions for 10 minutes by using a high intensity laser device while vertically maintaining the separation distance from handpiece to skin at approximately 1 cm...
June 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28624722/age-related-differences-in-the-response-of-the-l5-s1-intervertebral-disc-to-spinal-traction
#6
Ulrike H Mitchell, Paul F Beattie, Jennifer Bowden, Robert Larson, Hanuan Wang
BACKGROUND: Lumbar traction is a common treatment for low back pain; however its mechanisms of action are poorly understood. It has been hypothesized that a key effect of lumbar traction is its capacity to influence fluid movement within the intervertebral disc (IVD). OBJECTIVES: To determine differences in the apparent diffusion coefficient (ADC) obtained with lumbar diffusion-weighted imaging (DWI) of the L5-S1 IVD before, and during, the application of lumbar traction...
June 9, 2017: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/28622187/radiographic-and-clinical-outcomes-of-anterior-and-transforaminal-lumbar-interbody-fusions-a-systematic-review-and-meta-analysis-of-comparative-studies
#7
Remi M Ajiboye, Haddy Alas, Gina M Mosich, Akshay Sharma, Sina Pourtaheri
STUDY DESIGN: Systematic review and meta-analysis. OBJECTIVE: Compare the radiographic and clinical outcomes of anterior lumbar interbody fusion (ALIF) to transforaminal lumbar interbody fusion (TLIF). SUMMARY OF BACKGROUND DATA: ALIF and TLIF are 2 methods of achieving spinal arthrodesis. There are conflicting reports with no consensus on the optimal interbody technique to achieve successful radiographic and clinical outcomes. The goal of this systematic review and meta-analysis was to compare the radiographic and clinical outcomes of ALIF to TLIF...
June 15, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28616222/a-case-report-of-an-unusual-cause-of-postoperative-leg-pain-after-posterior-lumbar-fusion
#8
R Daureeawoo, S Baliga, W Mohahmed, E B Ahmed
We report the case of a 36-year old man who underwent elective posterior lumbar spinal fusion after presenting with bilateral leg pain with associated back pain. He had undergone a L5/S1 discectomy in 2001, which provided good symptomatic relief. On this admission, he underwent elective L4-S1 posterolateral fusion and bilateral L4/5 and L5/S1 decompression. Intra-operatively a pedicle screw had to be re-inserted after fluoroscopy confirmed a lateral breech. The patient had no major postoperative complications until the sixth day when the patient re-presented with acute leg pain and weakness...
July 2017: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/28614281/transcranial-motor-evoked-potential-alarm-criteria-to-predict-foot-drop-injury-during-lumbosacral-surgery
#9
Arvydas Tamkus, Kent S Rice, Gregory Hoffman
STUDY DESIGN: Retrospective cohort analysis. OBJECTIVE: This study aims to investigate whether waveform alterations in transcranial motor evoked potentials (TCMEP) can reliably predict postoperative foot drop. SUMMARY OF BACKGROUND DATA: Nerve injury leading to foot drop is a potential complication of lumbosacral surgery. Very limited data exist on the use of intraoperative TcMEPs to identify iatrogenic foot drop. METHODS: We retrospectively reviewed neuromonitoring data from 130 consecutive spine surgeries with instrumentation involving L4-S1...
June 13, 2017: Spine
https://www.readbyqxmd.com/read/28609385/association-between-menopause-and-lumbar-disc-degeneration-an-mri-study-of-1-566-women-and-1-382-men
#10
Chao Lou, Hongliang Chen, Liangwei Mei, Weiyang Yu, Kejun Zhu, Feijun Liu, Zhenzhong Chen, Guangheng Xiang, Minjiang Chen, Qiaoyou Weng, Dengwei He
OBJECTIVE: The aim of this study was to revisit and further investigate the association between menopause and disc degeneration in the lumbar spine using a magnetic resonance imaging-based eight-level grading system. METHODS: This study cohort comprised of 1,566 women and 1,382 age-matched men who were admitted for low back pain from June 2013 to October 2016. Data on age, weight, height, body mass index, age at natural menopause, and years since menopause (YSM) were obtained...
June 12, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28606581/the-effect-of-single-level-disc-degeneration-on-dynamic-response-of-the-whole-lumbar-spine-to-vertical-vibration
#11
Li-Xin Guo, Wei Fan
OBJECTIVE: The objective of this study was to investigate the effect of single-level disc degeneration on dynamic response of the whole lumbar spine to vertical whole body vibration that is typically present when driving vehicles. METHODS: Ligamentous finite element models of the lumbar L1-S1 motion segment in different grades of degeneration (healthy, mild and moderate) at L4-L5 level were developed with consideration of changing disc height and material properties of the nucleus pulpous...
June 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28603355/biomechanical-analysis-of-infinity-rehabilitation-method-for-treatment-of-low-back-pain
#12
Matej Daniel, Michaela Tomanová, Jana Hornová, Iva Novotná, Lenka Lhotská
[Purpose] Low back pain is a pervasive problem in modern societies. Physical rehabilitation in treatment of low back pain should reduce pain, muscle tension and restore spine stability and balance. The INFINITY® rehabilitation method that is based on a figure of eight movement pattern was proved to be effective in low back pain treatment. The aim of the paper is to estimate the effect of a figure of eight motion on the L5/S1 load and lumbar spine muscle activation in comparison to other motion patterns. [Subjects and Methods] Three-dimensional model of lumbar spine musculoskeletal system is used to simulate effect of various load motion pattern induced by displacement of the center of gravity of the upper body...
May 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28585998/correlation-of-the-features-of-the-lumbar-multifidus-muscle-with-facet-joint-osteoarthritis
#13
Bo Yu, Kaibiao Jiang, Xinfeng Li, Jidong Zhang, Zude Liu
Facet joint osteoarthritis is considered a consequence of the aging process; however, there is evidence that it may be associated with degenerative changes of other structures. The goal of this study was to investigate the correlation between lumbar multifidus muscle features and facet joint osteoarthritis. This retrospective study included 160 patients who had acute or chronic low back pain and were diagnosed with facet joint osteoarthritis on computed tomography scan. Morphometric parameters, including cross-sectional area, muscle-fat index, and percentage of bilateral multifidus asymmetry at L3-L4, L4-L5, and L5-S1, were evaluated with T2-weighted magnetic resonance imaging...
June 6, 2017: Orthopedics
https://www.readbyqxmd.com/read/28579287/effect-of-1-or-2-level-posterior-lumbar-interbody-fusion-on-global-sagittal-balance
#14
Jae Hwan Cho, Youn-Suk Joo, Cheongsu Lim, Chang Ju Hwang, Dong-Ho Lee, Choon Sung Lee
BACKGROUND CONTEXT: Sagittal imbalance is associated with poor clinical outcomes in patients with degenerative lumbar disease. However, there is no consensus on the impact of posterior lumbar interbody fusion (PLIF) on local and global sagittal balance. PURPOSE: To reveal the effect of 1- or 2-level PLIF on global sagittal balance. STUDY DESIGN/SETTING: A retrospective case-control study. PATIENTS SAMPLE: This study included 88 patients who underwent a 1- or 2-level PLIF for spinal stenosis with spondylolisthesis...
June 1, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28565828/effect-of-sacral-slope-on-the-biomechanical-behavior-of-the-low-lumbar-spine
#15
Yugang Jiang, Xiaojiang Sun, Xiongqi Peng, Jie Zhao, Kai Zhang
The present study investigated the influence of sacral slope (SS) on the biomechanical responses of the lumbar spine under specific physiological conditions. Firstly, based on computed tomography scan images of a 30-year-old healthy male volunteer (SS, 55°), a three-dimensional finite element (FE) model including the L4-S1 segment was established. Flexion, extension, lateral bending and torsion motions were simulated and compared with cadaveric test data in the literature to validate the lumbar spine FE model...
May 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28562570/adjacent-segmental-degeneration-following-wallis-interspinous-stabilization-implantation-biomechanical-explanations-and-the-value-of-magnetic-resonance-imaging
#16
Zhiguo Zhou, Wei Xiong, Li Li, Feng Li
Adjacent segmental degeneration (ASD) is a major issue after pedicular fixation. This study examined the degeneration of the adjacent levels due to the insertion of the Wallis interspinous stabilization system compared with discectomy, using magnetic resonance imaging (MRI).Thirty-eight patients diagnosed with lumbar degeneration disorders at L4-L5 were reviewed: 19 patients underwent discectomy and Wallis system implantation (group A), and 19 patients underwent discectomy (group B). The Visual Analog Scale (VAS) and Oswestry Disability Index (ODI) were assessed preoperatively and postoperatively...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28560770/a-radiographic-measurement-of-the-anterior-epidural-space-at-l4-5-disc-level
#17
Rui-Sheng Xu, Jie-Shi Wu, Hai-Dan Lu, Hao-Gang Zhu, Xia Li, Jian Dong, Feng-Lai Yuan
To observe the morphology character of the anterior epidural space at the L4-5 disc level and to provide an anatomical basis for safely and accurately performing a percutaneous endoscopic lumbar discectomy (PELD). Fifty-five cases with L5 S1 lumbar disc herniation were included in this study, and cases with L4-5 disease were excluded. When the puncture needle reached the epidural space at the L5 S1 level, iohexol was injected at the pressure of 50 cm H2 O during the PELD, then C-Arm fluoroscopy was used to obtain standard lumbar frontal and lateral images...
May 30, 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28553388/penetrating-vertebral-and-spinal-trauma-complicated-by-meningitis-in-a-2-year-old-child-a-rare-clinical-case
#18
Larkin Igor Ivanovich, Larkin Valery Ivanovich, Aleksandr Sergeevich Preobrazhensky
The selection of a treatment approach for a 2-year-old child with penetrating vertebral and spinal trauma, complicated by meningitis, is presented here. This pathology occurs rather rarely, which complicates the development of a uniform approach for the management of such patients. After surgical treatment of the wound in the lumbar region at L5-S1 level due to trauma, the leakage of a transparent discharge had been observed, the nature of which was unclear; it was considered at this treatment stage to be injury to the right ureter...
January 2017: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/28551828/rate-and-mode-of-screw-misplacements-after-3d-fluoroscopy-navigation-assisted-insertion-and-3d-imaging-control-of-1547-pedicle-screws-in-spinal-levels-t10-s1-related-to-vertebrae-and-spinal-sections
#19
Horst Balling, Thomas R Blattert
PURPOSE: In the field of spinal surgery, 3D-fluoroscopy navigation-assisted pedicle screw (PS) insertion with intra-operative 3D-image control represents a modern application of contemporary navigation technology. In literature, sectional or vertebral accuracy limitations of this image-guidance approach are not profoundly specified. This observational study explicitly differentiates accuracy rates and misplacement mode between spinal sections and single vertebrae from T10 to S1 using a navigation-assisted approach...
May 27, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28549642/the-role-of-the-features-of-facet-joint-angle-in-the-development-of-isthmic-spondylolisthesis-in-young-male-patients-with-l5-s1-isthmic-spondylolisthesis
#20
Ahmet Eroglu
OBJECTIVE: To investigate the facet tropism and its role in the development of lumbar isthmic spondylolisthesis (IS) in young male adults. MATERIAL AND METHOD: From March 2013 to May 2016, bilateral facet joint angles were measured axially at the level of L3-4, L4-5 and L5-S1 in the lumbar computerized tomography (CT) of the 97 individuals (46 patients with IS and 51 control) aged between 20 and 29. Classification was as follows: If the difference between the two corresponding facet angles is <6°, no tropism; if it is 6°-12°, moderate tropism; and if it is >12°, severe tropism...
May 23, 2017: World Neurosurgery
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