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https://www.readbyqxmd.com/read/28516090/lower-aorto-iliac-bifurcation-position-and-incident-cardiovascular-disease-a-multi-ethnic-study-of-atherosclerosis-mesa
#1
Nketi I Forbang, Matthew A Allison, Michael H Criqui
BACKGROUND: With increasing age, a downward shift of the aorto-iliac bifurcation relative to the lumbar spine occurs. A lower bifurcation position is an independent marker for adverse vascular aging and is associated with increased burden of cardiovascular disease (CVD) risk factors; however, the associations between lower bifurcation position and CVD events remain unknown. METHODS: Abdominal computed tomography scans were used to measure the aorto-iliac bifurcation distance (AIBD, distance from the aorto-iliac bifurcation to the L5/S1 disc space)...
October 2016: Aorta (Stamford, Conn.)
https://www.readbyqxmd.com/read/28512620/adjacent-bilateral-stress-pedicle-fractures-after-instrumented-lumbar-fusion-a-case-report
#2
Hak Sung Kim, Sang Woo Ha, Chang Il Ju, Seok Won Kim
Bilateral pedicle stress fractures are rare even in the elderly. Bilateral pedicle fractures are due to post-surgical complications at the level of fusion or stress related activities in most cases. The authors describe a unique case of adjacent L4 bilateral pedicle fractures, which developed 4 years after anterior lumbar interbody fusion with bone cement augmented screw fixation at the L5-S1 level. As far as the authors' knowledge, no similar case has been previously reported in the literature. The pathophysiological mechanism of this rare entity is discussed with review of relevant literature...
April 2017: Korean Journal of Neurotrauma
https://www.readbyqxmd.com/read/28511802/-a-continuous-series-of-27-adult-patients-treated-for-l5-s1-isthmic-spondylolisthesis-by-combined-approach-clinical-and-radiological-outcomes-at-1-year-follow-up
#3
N Koné, E Freitas Olim, P Coloma, A Rusconi, L Chenin, O Sy, I S Souaré, C Barrey
Through this single-center consecutive prospective study, we evaluated the results of a combined approach for L5-S1 isthmic spondylolisthesis, using a polyetheretherketone (PEEK) interbody lordotic cage during anterior approach and pedicle screw-based posterior fixation. Between 2010 and 2014, 27 adult patients were treated for L5-S1 isthmic spondylolisthesis (high and low grades) by a combined approach with a minimum follow-up of one year. Clinical outcome was assessed before surgical treatment and at four months and one year after surgery by: VAS, Oswestry Index (ODI) and Rolland-Morris scores...
May 13, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28511464/a-study-to-assess-the-functional-outcome-of-decompression-and-posterior-lumbar-interbody-fusion-of-low-grade-spondylolisthesis-of-lumbar-vertebra
#4
Deepak Hegde, Sameer Mehra, Santhosh Babu, Arjun Ballal
INTRODUCTION: Spondylolisthesis is defined as the forward displacement of one vertebra over the vertebra below. It is often accompanied by spinal canal stenosis and compression, which is the cause of all the symptoms. AIM: To assess and study the functional outcome after decompression and Posterior Lumbar Interbody Fusion (PLIF) of isthmic spondylolisthesis of lower lumbar vertebra and to study the complications occurring with this technique. MATERIALS AND METHODS: A prospective study was conducted in the Department of Orthopaedics in Justice KS Hegde Charitable Hospital, Mangalore, Karnataka, India from March 2015 to August 2016...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28507882/aquaporin-1-expression-in-herniated-human-lumbar-intervertebral-discs
#5
Haydn Hoffman, Aaron W Choi, Victor Chang, Jon Kimball, Alan S Verkman, Rubeen Virani, Brian Kim, Tianyi Niu, Daniel C Lu
STUDY DESIGN: Case series. OBJECTIVE: Intervertebral disc (IVD) degeneration is the cause of spondylosis. The pathogenesis is poorly understood, but disc dehydration often plays a role. In this study, we aim to identify and quantify aquaporin-1 (AQP1) in ex vivo human degenerated IVDs obtained intraoperatively and to investigate the relationship between AQP1 levels and magnetic resonance imaging (MRI) T2 intensity of the disc. METHODS: Ex vivo samples of nucleus pulposus (NP) tissue from lumbar IVDs were obtained from 18 consecutive patients who underwent surgery for disc herniation at L4/5 and L5/S1 level...
April 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28506227/associations-between-disc-space-narrowing-anterior-osteophytes-and-disability-in-chronic-mechanical-low-back-pain-a-cross-sectional-study
#6
Romain Shanil Perera, Poruwalage Harsha Dissanayake, Upul Senarath, Lalith Sirimevan Wijayaratne, Aranjan Lional Karunanayake, Vajira Harshadeva Weerabaddana Dissanayake
BACKGROUND: Radiographic features of lumbar disc degeneration (LDD) are common findings in patients with chronic mechanical low back pain; however, its role in disability and intensity of pain is debatable. This study aims to investigate the associations of the x-ray features of LDD and lumbar spondylolisthesis with severity of disability and intensity of pain. METHODS: A cross-sectional study was conducted on 439 patients with chronic mechanical low back pain who attended the rheumatology clinic, National Hospital of Sri Lanka, Colombo, from May 2012 to May 2014...
May 15, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28505960/normal-aging-of-the-lumbar-spine-in-women
#7
Hulya Kurtul Yildiz, Elif Evrim Ekin
BACKGROUND: Lumbar lordosis is required for bipedalism. OBJECTIVES: To investigate age-related changes in lumbar lordosis and to clarify the relationships between lumbar lordosis and vertebral wedging and disc degeneration. METHODS: A total of 300 women were included in this retrospective study, 50 in each of six age groups (20-, 30-, 40-, 50-, 60- and 70-year-olds). Patients with vertebral collapse, instable fracture or disc sequestration were excluded...
May 5, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28503347/wasting-of-extensor-digitorum-brevis-as-a-decisive-preoperative-clinical-indicator-of-lumbar-canal-stenosis-a-single-center-prospective-cohort-study
#8
S Munakomi, B M Kumar
BACKGROUND: The dilemma in managing patients with low back ache lies in differentiating radiculopathy from lumbar canal stenosis. This has a huge bearing in patients being planned for surgical intervention as underperforming leads to failed back syndrome whereas over-doing leads to instability. There still remains a loophole in clinically diagnosing lumbar canal stenosis. AIM: We opt to utilize a simple bedside clinical examination in routinely assessing patients presenting with low back ache in ruling out underlying canal stenosis...
September 2016: Annals of Medical and Health Sciences Research
https://www.readbyqxmd.com/read/28497766/-mri-for-diagnosis-of-low-back-pain-usability-association-with-symptoms-and-influence-on-treatment
#9
Gunnar Svanbergsson, Thorvaldur Ingvarsson, Ragnheidur Harpa Arnardóttir
BACKGROUND: Non-specific low-back pain is a worldwide problem. More specific diagnosis could improve prognosis. Magnetic resonance imaging (MRI) became available in Akureyri Hospital in 2004 but its utilisation in diagnosing low-back pain has not been investigated. OBJECTIVE: To study the use of MRI in diagnosing low-back pain, correlation of the MRI outcomes with other clinical findings and its possible effects on treatment. METHODS: Retrospective, descriptive analysis of patients' journals...
January 2017: Læknablađiđ
https://www.readbyqxmd.com/read/28496357/incidence-and-risk-factors-of-persistent-low-back-pain-following-posterior-decompression-and-instrumented-fusion-for-lumbar-disk-herniation
#10
Hui Wang, Tao Wang, Qian Wang, Wenyuan Ding
INTRODUCTION: The aim of this study was to explore the incidence and risk factors of persistent low back pain (PLBP) following posterior decompression and instrumented fusion for lumbar disk herniation and to provide references in decision-making and surgical planning for both spinal surgeons and surgically treated patients. PATIENTS AND METHODS: By retrieving the medical records from January 2013 to December 2016, 221 patients were retrospectively reviewed. Patients were classified as having PLBP if numeric rating scale (NRS) scores were >50 at all postoperative follow-up time points (3 months, 6 months, and 12 months)...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28490942/comparison-of-incidences-of-intravascular-injection-between-medial-and-lateral-side-approaches-during-traditional-s1-transforaminal-epidural-steroid-injection
#11
Sang Jun Park, Shin Hyung Kim, Seon Ju Kim, Duck Mi Yoon, Kyung Bong Yoon
Purpose. Intravascular injection rates are higher during traditional S1 transforaminal epidural steroid injection (TFESI) compared with lumbar transforaminal injection. We compared the incidences of intravascular injection between the medial and lateral approaches to the S1 foramen during S1 TFESI. Materials and Methods. A total of 139 patients underwent one or more TFESIs (170 total injections). The patients received S1 TFESI by either medial or lateral side of S1 foramen under fluoroscopic anteroposterior view using digital subtraction method...
2017: Pain Research & Management: the Journal of the Canadian Pain Society
https://www.readbyqxmd.com/read/28479779/ureteric-injury-after-lumbosacral-microdiscectomy-a-case-report-and-review-of-literature
#12
Nitin Garg, Pankaj Panwar, Sudheer Kumar Devana, S M Ravi Mohan, A K Mandal
Microdiscectomy is considered a very safe procedure with few serious complications. Ureteric injury following microdiscectomy is rarely reported in the literature. We report a rare case of iatrogenic ureteric injury following L5-S1 microdiscectomy for prolapsed intervertebral disc which was detected early and managed in time.
April 2017: Urology Annals
https://www.readbyqxmd.com/read/28476112/does-a-deep-seated-l5-vertebra-position-with-respect-to-the-iliac-crests-affect-the-accuracy-of-percutaneous-pedicle-screw-placement-at-lumbosacral-junction
#13
Jing Guo, Lianjin Guo, Juzhou Gao, Qinjie Ling, Zhixun Yin, Erxing He
BACKGROUND: Significant prominence of iliac crests with a deep seated L5 vertebra can potentially interfere with the screw trajectory when placing percutaneous pedicle screws (PPS) at the lumbosacral segment. The objective of this study was to investigate the influence of L5 position in relation to the iliac crests on the accuracy of percutaneous placement of lumbosacral pedicle screws. METHODS: From Oct 2012 to Sep 2014, 54 patients who underwent PPS placement at L5-S1 segment were recruited...
May 5, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28472486/re-operation-after-long-segment-fusions-for-adult-spinal-deformity-the-impact-of-extending-the-construct-below-the-lumbar-spine
#14
Christopher D Witiw, Richard G Fessler, Stacie Nguyen, Praveen Mummaneni, Neel Anand, Donald Blaskiewicz, Juan Uribe, Michael Y Wang, Adam S Kanter, David Okonkwo, Paul Park, Vedat Deviren, Behrooz A Akbarnia, Robert K Eastlack, Christopher Shaffrey, Gregory M Mundis
BACKGROUND: Deciding where to end a long-segment fusion for adult spinal deformity (ASD) may be a challenge, particularly in the absence of an abnormality at L5/S1. Some suggest prophylactic extension of the construct to the sacrum and/or ilium (S/I) to protect against distal junctional failure, while others support terminating in the lower lumbar spine to preserve motion. OBJECTIVE: To compare the risk of re-operation after long-segment fusions for ASD that ends at L4 or L5 (L4/5) vs S/I...
May 3, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28460342/anterior-lumbar-interbody-fusion-with-percutaneous-pedicle-screw-fixation-for-multiple-level-isthmic-spondylolisthesis
#15
Chang-Sheng Hsieh, Hyung Chang Lee, Hyeong-Seok Oh, Sang-Joon Park, Byeong-Wook Hwang, Sang-Ho Lee
OBJECTIVE: Multiple-level lumbar isthmic spondylolisthesis is rarely reported. Here, we report 23 consecutive patients who underwent anterior lumbar interbody fusion (ALIF) with percutaneous pedicle screw fixation (PPF) for multiple-level isthmic spondylolisthesis. PATIENTS AND METHODS: From June 2008 through December 2014, multiple-level lumbar isthmic spondylolisthesis was diagnosed in 23 patients (6 men, 17 women) at Wooridul Spine Hospital (Busan, South Korea)...
April 13, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28458818/lumbar-vertebral-body-and-pars-fractures-following-laminectomy
#16
Akshay Yadhati, Swamy Kurra, Richard A Tallarico, William F Lavelle
A 56-year-old alcoholic male incurred L5 vertebral body and bilateral L4 pars fractures with progressive L4 on L5 anterolisthesis following low-energy falls while intoxicated. Recently, he had a L3-S1 laminectomy for lumbar spinal stenosis with claudication. Preoperative imaging and radiographs were negative for pars defects and instability, so an isolated decompressive surgery was performed. Following low-energy falls, his outpatient work-up revealed fractures through the bilateral L4 pedicles and posterior third of L5 vertebral body, with recurrence of axial back pain and bilateral lower extremity radiculopathy...
February 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/28454187/combination-of-transforaminal-and-interlaminar-percutaneous-endoscopic-lumbar-diskectomy-for-extensive-down-migrated-disk-herniation
#17
Kyung-Chul Choi, Jung Hyun Lee, Jin-Sung Kim, Dong Chan Lee, Choon Keun Park
Background and Study Aims The technique and instrumentation of percutaneous endoscopic lumbar diskectomy (PELD) have significantly improved. Thus its indications have been gradually expanding. Down-migrated disk, in particular, is regarded inaccessible by rigid instrumentation due to poor visualization and limited accessibility. We introduce a combination of transforaminal and interlaminar PELD for extensive down-migrated disk herniation at the L4-L5 level. Patients and Methods In the first case, a 48-year-old man had left L5 radicular pain...
April 28, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/28450317/the-segment-dependent-changes-in-lumbar-intervertebral-space-height-during-flexion-extension-motion
#18
M Fu, Q Ye, C Jiang, L Qian, D Xu, Y Wang, P Sun, J Ouyang
OBJECTIVES: Many studies have investigated the kinematics of the lumbar spine and the morphological features of the lumbar discs. However, the segment-dependent immediate changes of the lumbar intervertebral space height during flexion-extension motion are still unclear. This study examined the changes of intervertebral space height during flexion-extension motion of lumbar specimens. METHODS: First, we validated the accuracy and repeatability of a custom-made mechanical loading equipment set-up...
April 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28443173/qualitative-grading-as-a-tool-in-the-management-of-multilevel-lumbar-spine-stenosis
#19
Shardul Madhav Soman, Jimmy Chokshi, Naitik Chhatrala, Gulam Haider Tharadara, Mukund Prabhakar
STUDY DESIGN: This is a prospective study that was undertaken at a single centre and involved 80 consecutive patients diagnosed with lumbar spinal stenosis (LSS). PURPOSE: The aim of the study was to assess the efficacy of a qualitative grading system as seen on magnetic resonance imaging (MRI) as a tool in the management of multilevel LSS. OVERVIEW OF LITERATURE: LSS diagnosis is clinical but is usually radiologically supplemented. However, there are often multilevel radiological findings with non-specific or atypical clinical features...
April 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/28443169/radiographic-analysis-of-the-lumbosacral-juncture-is-there-a-critical-sacral-angle-for-total-disc-replacement
#20
Rattalerk Arunakul, Melodie Metzger, Linda Kanim, Hyun Bae, Michael Kropf, Rick Delamarter
STUDY DESIGN: Retrospective review of a patient cohort through a prospective study. PURPOSE: To determine whether there are correlations between radiographic measurements, including sacral slope (SS) and pelvic incidence (PI), and self-reported clinical outcomes among single-level L5/S1 ProDisc-L patients. OVERVIEW OF LITERATURE: The lumbosacral juncture presents unique biomechanical challenges with respect to artificial disc replacement (ADR) because of its orientation and consequential shear loading...
April 2017: Asian Spine Journal
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