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https://www.readbyqxmd.com/read/28102579/anatomical-organization-and-somatic-axonal-components-of-the-lumbosacral-nerves-in-female-rabbits
#1
Yolanda Cruz, Isela Hernández-Plata, Rosa Angélica Lucio, René Zempoalteca, Francisco Castelán, Margarita Martínez-Gómez
AIM: To determine the anatomical organization and somatic axonal components of the lumbosacral nerves in female rabbits. METHODS: Chinchilla adult anesthetized female rabbits were used. Anatomical, electrophysiological, and histological studies were performed. RESULTS: L7, S1, and some fibers from S2 and S3 form the lumbosacral trunk, which gives origin to the sciatic nerve and innervation to the gluteal region. From S2 to S3 originates the pudendal nerve, whose branches innervates the striated anal and urethra sphincters, as well as the bulbospongiosus, ischiocavernosus, and constrictor vulvae muscles...
January 19, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28094419/postoperative-computed-tomography-and-low-field-magnetic-resonance-imaging-findings-in-dogs-with-degenerative-lumbosacral-stenosis-treated-by-dorsal-laminectomy
#2
Martin Rapp, Charles J Ley, Kerstin Hansson, Lennart Sjöström
OBJECTIVES: To describe postoperative computed tomography (CT) and magnetic resonance imaging (MRI) findings in dogs with degenerative lumbosacral stenosis (DLSS) treated by dorsal laminectomy and partial discectomy. METHODS: Prospective clinical case study of dogs diagnosed with and treated for DLSS. Surgical and clinical findings were described. Computed tomography and low field MRI findings pre- and postoperatively were described and graded. Clinical, CT and MRI examinations were performed four to 18 months after surgery...
January 17, 2017: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/28094414/asymmetrical-lumbosacral-transitional-vertebrae-in-dogs-may-promote-asymmetrical-hip-joint-development
#3
Mark A Flückiger, Frank Steffen, Michael Hässig, Joseph P Morgan
OBJECTIVES: This study examines the relationship between the morphology of the lumbosacral transitional vertebra (LTV) and asymmetrical development of the hip joints in dogs. METHODS: A total of 4000 dogs which had been consecutively scored for canine hip dysplasia were checked for the presence of a LTV. A LTV was noted in 138 dogs and classified depending on the morphology of the transverse processes and the degree of contact with the ilium. RESULTS: In dogs with an asymmetrical LTV, the hip joint was significantly more predisposed to subluxation and malformation on the side of the intermediate or sacral-like transverse process (p <0...
January 17, 2017: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/28075497/computed-tomographic-evaluation-of-dynamic-alteration-of-the-canine-lumbosacral-intervertebral-neurovascular-foramina
#4
Andrew J Worth, Angela Hartman, Janis P Bridges, Boyd R Jones, Joe I G Mayhew
OBJECTIVE: To develop a computed tomographic (CT) method to measure the volume of the lumbosacral intervertebral neurovascular foramina (IVF) in dogs, and determine the effect of the range of motion of the lumbosacral (LS) junction on this measurement in German shepherd dogs (GSDs) with degenerative lumbosacral stenosis (DLSS) compared to unaffected controls. STUDY DESIGN: In vivo analysis and retrospective case series. SAMPLE POPULATION: Twenty-four working Police GSDs, 12 diagnosed with DLSS and 12 unaffected by DLSS were compared to 10 Greyhounds without DLSS...
January 11, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28075496/effect-of-dorsal-laminectomy-and-dorsal-annulectomy-with-partial-lumbosacral-discectomy-on-the-volume-of-the-lateral-intervertebral-neuroforamina-in-dogs-when-the-lumbosacral-junction-is-extended
#5
Andrew J Worth, Angela Hartman, Janis P Bridges, Boyd R Jones, Joe I G Mayhew
OBJECTIVE: To determine the effect of dorsal annulectomy and partial discectomy on the volume of the lumbosacral lateral intervertebral neurovascular foramina (intervertebral foramina) in canine cadavers during extension of the lumbosacral junction. STUDY DESIGN: Ex vivo experiment. SAMPLE POPULATION: Lumbosacral specimens from 10 large breed dogs euthanatized for reasons unrelated to lumbosacral disease. METHODS: The lumbosacral specimens were clamped in a wooden jig and scanned using computed tomography (CT) with the lumbosacral junction in a neutral position and loaded in extension using a tensioning device...
January 11, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28062970/good-prognosis-of-postpartum-lower-limb-sensorimotor-deficit-a-combined-clinical-electrophysiological-and-radiological-follow-up
#6
A Richard, G Vellieux, S Abbou, J L Benifla, P Lozeron, N Kubis
Postpartum lower limb motor and/or sensory deficit is an uncommon obstetrical complication. We aimed to identify its incidence, etiology, and precipitating factors, as well as the neurological prognosis by retrospectively analyzing the successive neurological evaluations, electrophysiological, and MRI data from all the consecutive patients with postpartum motor and/or sensory deficits of the lower limbs referred from the Lariboisière Obstetrical Department to the Lariboisière Neurophysiology Department, from January 2012 to June 2016, as well as data concerning labor and morphological characteristics of mother and baby...
January 6, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28062188/a-comprehensive-analysis-and-immunobiology-of-autoimmune-neurological-syndromes-during-the-zika-virus-outbreak-in-c%C3%A3%C2%BAcuta-colombia
#7
Juan-Manuel Anaya, Yhojan Rodríguez, Diana M Monsalve, Daniel Vega, Ernesto Ojeda, Diana González-Bravo, Mónica Rodríguez-Jiménez, Carlos A Pinto-Díaz, Pablo Chaparro, María L Gunturiz, Aftab A Ansari, M Eric Gershwin, Nicolás Molano-González, Carolina Ramírez-Santana, Yeny Acosta-Ampudia
We have focused on the epidemiology and immunobiology of Zika virus (ZIKV) infection and factors associated with the development of Guillain-Barré syndrome (GBS) and other neurological syndromes in Cúcuta, the capital of North Santander department, Colombia. Data of patients with ZIKV disease reported to the national population-based surveillance system were used to calculate the basic reproduction number (R0) and the attack rates (ARs) as well as to develop epidemiological maps. Patients with neurological syndromes were contacted and their diagnoses were confirmed...
January 3, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/28059947/sensitivity-of-computed-tomography-compared-with-that-of-magnetic-resonance-myelography-in-the-presurgical-diagnosis-of-foraminal-or-extraforaminal-entrapment-at-the-lumbosacral-junction
#8
Sung Ho Lee, Sang-Ho Lee, Soo-Beom Kim, Eun Soo Park, Soo-Nyung Kim, Ki-Hyoung Moon
STUDY DESIGN: This is a retrospective analysis. OBJECTIVE: To investigate and compare the sensitivities of computed tomography (CT) and magnetic resonance myelography (MRM) in the presurgical diagnosis of foraminal or extraforaminal entrapment of the L5 nerve. SUMMARY OF BACKGROUND DATA: CT is more clinically available than MRM. Foraminal or extraforaminal entrapment at the lumbosacral junction may cause L5 radiculopathy but is difficult to diagnose...
January 4, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28059708/impact-of-mr-neurography-in-patients-with-chronic-cauda-equina-syndrome-presenting-as-chronic-pelvic-pain-and-dysfunction
#9
J R Petrasic, A Chhabra, K M Scott
BACKGROUND AND PURPOSE: Chronic cauda equina syndrome, defined as persistent damage of the cauda equina nerve roots within the spinal canal can be a challenging diagnosis with varied presentations. MR neurography imaging is more commonly being used to evaluate the lumbosacral spine of patients suspected of having subacute or chronic cauda equina syndrome. Our aim was to evaluate the impact of lumbosacral plexus MR neurography in the diagnostic thinking and therapeutic management of patients presenting with chronic pelvic pain and dysfunction and suspected chronic cauda equina syndrome...
November 10, 2016: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28056436/one-stage-posterior-surgical-management-of-lumbosacral-spinal-tuberculosis-with-nonstructural-autograft
#10
Jia-Ming Liu, Yang Zhou, Ai-Fen Peng, Xuan-Yin Chen, Wen-Zhao Chen, Xin-Hua Long, Shan-Hu Huang, Zhi-Li Liu
OBJECTIVE: Lumbosacral spinal tuberculosis is rare in current population. Previous studies have reported effective outcomes about anterior, antero-posterior and posterior surgery for treating tuberculosis of lumbosacral region. However, the bone grafts used in these studies are mainly structural bone and mesh cage. The purpose of this study is to evaluate the efficacy and safety of nonstructural autograft in the surgical treatment of lumbosacral tuberculosis by one-stage posterior procedure...
December 28, 2016: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28052435/lumbar-spine-postures-in-marines-during-simulated-operational-positions
#11
David B Berry, Ana E Rodríguez-Soto, J Su, Sara P Gombatto, Bahar Shahidi, Laura Palombo, Christine Chung, Andrew Jensen, Karen R Kelly, Samuel R Ward
Low back pain has a 70% higher prevalence in members of the armed forces than in the general population, possibly due to the loads and positions soldiers experience during training and combat. Although the influence of heavy load carriage on standing lumbar spine posture in this population is known, postures in other operationally relevant positions are unknown. Therefore, the purpose of this study was to characterize the effect of simulated military operational positions under relevant loading conditions on global and local lumbar spine postures in active duty male US Marines...
January 4, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28047407/su-f-t-110-lkb-modeling-of-acute-hematologic-toxicity-in-rectal-cancer
#12
H Deng, K Cheng, X Wan
PURPOSE: To investigate dosimetric parameters correlated with acute hematologic toxicity (HT) in patients with rectal cancer treated with IMRT and concurrent chemotherapy. METHODS: We analyzed 127 rectal cancer patients receiving IMRT and concurrent chemotherapy. Whole pelvic bone marrow (PBM) was contoured for each patient including lumbosacral spine (LSSP), ilium and lower pelvic (LP). The equivalent uniform dose (EUD) of each region and the PBM were calculated...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28041327/bone-graft-options-for-spinal-fusion-following-resection-of-spinal-column-tumors-systematic-review-and-meta-analysis
#13
Benjamin D Elder, Wataru Ishida, C Rory Goodwin, Ali Bydon, Ziya L Gokaslan, Daniel M Sciubba, Jean-Paul Wolinsky, Timothy F Witham
OBJECTIVE With the advent of new adjunctive therapy, the overall survival of patients harboring spinal column tumors has improved. However, there is limited knowledge regarding the optimal bone graft options following resection of spinal column tumors, due to their relative rarity and because fusion outcomes in this cohort are affected by various factors, such as radiation therapy (RT) and chemotherapy. Furthermore, bone graft options are often limited following tumor resection because the use of local bone grafts and bone morphogenetic proteins (BMPs) are usually avoided in light of microscopic infiltration of tumors into local bone and potential carcinogenicity of BMP...
January 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28040529/primary-seeding-of-a-myxopapillary-ependymoma-is-it-a-different-disease-in-an-adult-population-case-report-and-review-of-the-literature
#14
Nickalus R Khan, Matthew VanLandingham, Thomas O'Brien, Frederick A Boop, Kenan Arnautović
Myxopapillary ependymoma (MPE) is a slow-growing tumor occurring most often in adults. It originates from the filum terminale in the area of the conus medullaris and cauda equina, and is considered a benign lesion. Despite this classification, however, recurrence after both partial and gross total resection is well known. In the pediatric population, primary MPE seeding is well documented and treated through gross total resection, followed by irradiation. In adults, however, primary MPE seeding is not recognized...
December 28, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/28040125/preoperative-measurement-of-maternal-abdominal-circumference-relates-the-initial-sensory-block-level-of-spinal-anesthesia-for-cesarean-section-an-observational-study
#15
Chi-Hang Kuok, Chung-Hsin Huang, Pei-Shan Tsai, Yuan-Pi Ko, Wei-Shih Lee, Yung-Wei Hsu, Fang-Yu Hung
OBJECTIVE: Lumbosacral cerebrospinal fluid volume is decreased as the enlarging uterus compresses the inferior vena cava during pregnancy. A subsequent greater cephalad spread of sensory blockade is observed. Gravid uterus plays a crucial role in affecting the spinal anesthesia level. We hypothesized that maternal abdominal circumference can reflect compressive effect of the uterus and investigated the relationship between abdominal circumference and the level of sensory blockade, and incidence of hypotension following spinal anesthesia with hyperbaric bupivacaine in term parturients...
December 2016: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28035532/ghrelin-and-motilin-control-systems-in-gi-physiology-and-therapeutics
#16
Gareth J Sanger, John Broad, Brid Callaghan, John B Furness
Ghrelin and motilin are released from gastrointestinal endocrine cells during hunger, to act through G protein-coupled receptors that have closely related amino acid sequences. The actions of ghrelin are more complex than motilin because ghrelin also exists outside the GI tract, it is processed to des-acyl ghrelin which has activity, ghrelin can exist in truncated forms and retain activity, the ghrelin receptor can have constitutive activity and is subject to biased agonism and finally additional ghrelin-like and des-acyl ghrelin receptors are proposed...
December 30, 2016: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/28028597/intra-and-inter-observer-reliability-of-determining-degree-of-pelvic-obliquity-in-neuromuscular-scoliosis-using-the-eos-chair%C3%A2-protocol
#17
Jihane Rouissi, Robin Arvieu, Arnaud Dubory, Claudio Vergari, Manon Bachy, Raphaël Vialle
PURPOSE: Scoliosis with pelvic obliquity (PO) could be investigated with the EOS-CHAIR protocol as the most common deformity especially in patients with trunk hypotonia and quadriplegia. However, the intra-observer and inter-observer reliability of various angles assessing PO was not investigated with this new imaging protocol. METHODS: A retrospective cohort of 36 EOS frontal full-spine acquisitions made in sitting position was used. The sacroiliac pelvic obliquity angle, iliac crest pelvic obliquity angle, and ischiatic pelvic obliquity angle were assessed in an intra-observer and inter-observer study...
December 27, 2016: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28028448/a-novel-technique-to-repair-a-transverse-sacral-fracture-in-a-previously-fused-lumbosacral-spondylolisthesis
#18
Thomas Noh, Mokbel K Chedid
BACKGROUND: Transverse fractures of the sacrum are rare, and surgical treatment for these fractures ranges from conservative to challenging. Transverse stress fractures of the sacrum after placement of lumbar-to-sacral instrumentation have been previously described. We report a new technique to repair a transverse Type-2 Roy-Camille fracture with spondylolisthesis of S1 over S2 in a previously fused instrumented high-grade L4-L5, L5-S1 spondylolisthesis. CASE DESCRIPTION: A 64-year-old female who previously had an L4-L5, L5-S1 fusion for spondylolisthesis presented with excruciating lower back pain and radiculopathy for over 6 months...
2016: Surgical Neurology International
https://www.readbyqxmd.com/read/28028445/long-standing-lumbosacral-dermoid-tumor-and-intracranial-fat-droplet-dissemination-a-case-report
#19
Ali Babashahi, Morteza Taheri, Arash Fattahi
BACKGROUND: Dermoid tumors are slow growing, benign CNS lesions. CASE DESCRIPTION: This case study concerns a 29-year-old female with a 6-year history of lower extremity paresthesias attributed to magnetic resonance (MR)/computed tomography (CT) documented intradural dermoid tumor that extended from L1 to S1. On MR, it was hypointense on T1, hyperintense on T2, and did not enhance with gadolinium. CT showed hyperdensity at the L1-L2 levels. The craniocervical MR imaging showed small hyperintense foci in the cisternal space favoring "fat dissemination...
2016: Surgical Neurology International
https://www.readbyqxmd.com/read/28027566/tarlov-cyst-is-correlated-with-a-short-broad-terminal-of-the-thecal-sac
#20
Chaoran Xie, Xuesheng Zheng, Nu Zhang
Background In clinical practice, we noted that the end section of the thecal sac is apparently different in patients with Tarlov cyst compared with that of the normal population. We conducted this clinical study based on magnetic resonance imaging (MRI). Methods Our study included 30 patients with Tarlov cyst and 30 healthy volunteers as the control. The L4, L5 cross-section areas, the L4, L5 anteroposterior diameters, and the terminal length of the thecal sac were measured from the lumbosacral spine MRI...
December 27, 2016: Journal of Neurological Surgery. Part A, Central European Neurosurgery
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