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https://www.readbyqxmd.com/read/29662907/demystifying-mr-neurography-of-the-lumbosacral-plexus-from-protocols-to-pathologies
#1
REVIEW
Francisco J Muniz Neto, Eduardo N Kihara Filho, Frederico C Miranda, Laercio A Rosemberg, Durval C B Santos, Atul K Taneja
Magnetic resonance neurography is a high-resolution imaging technique that allows evaluating different neurological pathologies in correlation to clinical and the electrophysiological data. The aim of this article is to present a review on the anatomy of the lumbosacral plexus nerves, along with imaging protocols, interpretation pitfalls, and most common pathologies that should be recognized by the radiologist: traumatic, iatrogenic, entrapment, tumoral, infectious, and inflammatory conditions. An extensive series of clinical and imaging cases is presented to illustrate key-points throughout the article...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29660549/perineural-spread-along-spinal-and-obturator-nerves-in-primary-vaginal-carcinoma-a-case-report
#2
Eun Jee Song, Ji Seon Park, Kyung Nam Ryu, So Young Park, Wook Jin
BACKGROUND: Perineural spread is not uncommon feature in carcinoma of the head and neck. On the contrary, perineural spread in pelvic malignancies has been rarely reported. This report is the first report about perineural spread of obturator nerve and lumbosacral plexus from primary vaginal cancer. CASE DESCRIPTION: A 50-year-old woman diagnosed with infectious spondylitis at an outside hospital was referred to our institution. She presented with persistent lower back pain and right anterior thigh pain...
April 13, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29581014/magnetic-resonance-neurography-in-chronic-lumbosacral-and-pelvic-pain-diagnostic-and-management-impact-institutional-audit
#3
Riham Dessouky, Yin Xi, Kelly M Scott, Mohammed Khaleel, Kevin Gill, Stephanie Jones, Dalia N Khalifa, Hazim I Tantawy, Magdy A Aidaros, Avneesh Chhabra
BACKGROUND: / purpose: Low back and pelvic pain are among the most prevalent conditions worldwide, with major social and economic costs. The aim of this study was to evaluate the role of Magnetic Resonance Neurography (MRN) of lumbosacral plexus in the management and outcomes of these chronic pain patients. METHODS: Consecutive patients with chronic lumbosacral and pelvic pain referred for MRN over a year were included. Pre-and post-imaging clinical diagnosis and treatment, pain levels and location were recorded...
March 23, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29575220/lumbosacral-plexus-root-thickening-establishing-normal-root-dimensions-using-magnetic-resonance-neurography
#4
Hernán Chaves, Mariana Bendersky, Romina Goñi, César Gómez, Martín Carnevale, Claudia Cejas
INTRODUCTION: Disorders affecting the lumbosacral plexus (LSP) can alter root diameter. Our aim was to determine normal LSP nerve root dimensions using magnetic resonance neurography (MRN). MATERIALS AND METHODS: Eleven asymptomatic patients (ages: 18-53, mean: 34 years) underwent MRN of the LSP on a 3T scanner with an 8-channel torso-PA coil. IDEAL T2-weighted images were acquired and nerve root dimensions were measured from the second lumbar (L2) to the first sacral (S1) vertebrae on the coronal plane, 5 mm from the dorsal root ganglion (DRG)...
March 25, 2018: Clinical Anatomy
https://www.readbyqxmd.com/read/29536189/posterior-resection-of-fifth-lumbar-giant-schwannoma-combined-with-a-recapping-transiliac-approach-case-report-and-technical-note
#5
Hitoshi Tonomura, Yoichiro Hatta, Masateru Nagae, Ryota Takatori, Toshikazu Kubo
A two-stage combined anterior and posterior approach is commonly used for total resection of giant spinal tumors. However, an anterior approach at the lower lumbar level is technically challenging because of the anatomy of the iliac wing, major vessels and nerves of the lumbosacral plexus. We report a case of fifth vertebral tumor treated posteriorly with a newly devised surgical procedure combined with a recapping transiliac approach. A 45-year-old female diagnosed with giant schwannoma of the fifth lumbar vertebra underwent single-stage posterior tumor resection combined with osteotomy of the lateral part of the iliac crest...
March 13, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/29528863/intraoperative-sedation-with-dexmedetomidine-is-superior-to-propofol-for-elderly-patients-undergoing-hip-arthroplasty-a-prospective-randomized-controlled-study
#6
Bin Mei, Gaige Meng, Guanghong Xu, Xinqi Cheng, Shishou Chen, Ye Zhang, Ming Zhang, Xuesheng Liu, Erwei Gu
BACKGROUND: Peripheral nerve block is a preferable method for elderly patients receiving hip arthroplasty. Sedation with dexmedetomidine may reduce postoperative delirium. The aim of this study was to investigate whether intraoperative sedation with dexmedetomidine, as a supplementary to peripheral nerve block for elderly patients receiving total hip arthroplasty, can decrease the prevalence of postoperative delirium. METHODS: A prospective, randomized controlled study was conducted with patients 65 years of age or older who underwent total hip arthroplasty between June 2016 and June 2017...
March 9, 2018: Clinical Journal of Pain
https://www.readbyqxmd.com/read/29492369/two-year-outcomes-from-a-single-surgeon-s-learning-curve-experience-of-oblique-lateral-interbody-fusion-without-intraoperative-neuromonitoring
#7
Kamal Woods, Ahtziri Fonseca, Larry E Miller
Introduction Oblique lumbar interbody fusion (OLIF) is a newer procedure that avoids the psoas and lumbosacral plexus due to its oblique trajectory into the retroperitoneal space. While early experience with OLIF is reassuring, the longer-term clinical efficacy has not been well established. The purpose of this study was to describe two-year clinical outcomes with OLIF performed by a single surgeon during the learning curve without the aid of the neuromonitoring. Materials and methods Chart review was performed for the consecutive patients who underwent OLIF by a single surgeon...
December 22, 2017: Curēus
https://www.readbyqxmd.com/read/29468291/lymphangiomatosis-a-rare-entity-presenting-with-involvement-of-the-sacral-plexus
#8
Megan K Mills, Bryn Putbrese, Hailey Allen, Sarah E Stilwill
Lymphangiomatosis is an uncommon disease process characterized by multisystem lymphatic malformations that can involve numerous body systems, including organs, muscles, soft tissues, and bones. Involvement of the nervous system is rare and has even been previously described as a site of sparing. We present a case of a 24-year-old female with known lymphangiomatosis, presenting with acute onset of lower extremity paresthesias, weakness, and new urinary retention. MRI of the pelvis revealed lymphangiomatosis of the sacral plexus, which has not been previously reported...
February 21, 2018: Skeletal Radiology
https://www.readbyqxmd.com/read/29455410/can-patients-with-symptomatic-tarlov-cysts-be-differentiated-from-patients-with-specific-low-back-pain-based-on-comprehensive-history-taking
#9
Maria Anna Hulens, Wim Dankaerts, Ricky Rasschaert, Frans Bruyninckx, Marie-Laure Willaert, Charlotte Vereecke, Greet Vansant
BACKGROUND: Tarlov cysts (TCs) are expanded nerve root sheaths that occur near the dorsal root ganglion and result from increased intraspinal hydrostatic pressure. TCs most frequently affect the lumbosacral plexus and therefore may cause specific symptoms such as perineal pain and neurogenic bladder, bowel, and sphincter problems. It has been estimated that 1% of the population has symptomatic Tarlov cysts (STCs). However, STCs appear to be underdiagnosed, with the pain reported by patients commonly attributed to degenerative alterations seen on MRI...
February 17, 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29435745/a-step-towards-stereotactic-navigation-during-pelvic-surgery-3d-nerve-topography
#10
A R Wijsmuller, C Giraudeau, J Leroy, G J Kleinrensink, E Rociu, L G Romagnolo, A G F Melani, V Agnus, M Diana, L Soler, B Dallemagne, J Marescaux, D Mutter
BACKGROUND: Long-term morbidity after multimodal treatment for rectal cancer is suggested to be mainly made up by nerve-injury-related dysfunctions. Stereotactic navigation for rectal surgery was shown to be feasible and will be facilitated by highlighting structures at risk of iatrogenic damage. The aim of this study was to investigate the ability to make a 3D map of the pelvic nerves with magnetic resonance imaging (MRI). METHODS: A systematic review was performed to identify a main positional reference for each pelvic nerve and plexus...
February 12, 2018: Surgical Endoscopy
https://www.readbyqxmd.com/read/29323028/surgical-reconstruction-of-spinal-cord-circuit-provides-functional-return-in-humans
#11
REVIEW
Thomas Carlstedt, Nicholas James, Mårten Risling
This mini review describes the current surgical strategy for restoring function after traumatic spinal nerve root avulsion in brachial or lumbosacral plexus injury in man. As this lesion is a spinal cord or central nervous injury functional return depends on spinal cord nerve cell growth within the central nervous system. Basic science, clinical research and human application has demonstrated good and useful motor function after ventral root avulsion followed by spinal cord reimplantation. Recently, sensory return could be demonstrated following spinal cord surgery bypassing the injured primary sensory neuron...
December 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/29322233/high-isotropic-resolution-t2-mapping-of-the-lumbosacral-plexus-with-t2-prepared-3d-turbo-spin-echo
#12
Nico Sollmann, Dominik Weidlich, Barbara Cervantes, Elisabeth Klupp, Carl Ganter, Hendrik Kooijman, Ernst J Rummeny, Claus Zimmer, Jan S Kirschke, Dimitrios C Karampinos
PURPOSE: Isotropic high-resolution three-dimensional (3D) magnetic resonance neurography (MRN) is increasingly used to depict even small and highly oblique nerves of the lumbosacral plexus (LSP). The present study introduces a T2 mapping sequence (T2-prepared 3D turbo spin echo) that is B1-insensitive and enables quantitative assessment of LSP nerves. METHODS: In this study 15 healthy subjects (mean age 28.5 ± 3.8 years) underwent 3 T MRN of the LSP area three times...
January 10, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29249733/variations-in-the-course-of-the-superior-gluteal-artery-in-relation-to-the-lumbosacral-plexus
#13
Hidaka Anetai, Kounosuke Tokita, Ryuhei Kojima, Yukio Aizawa, Ikuo Kageyama, Katsuji Kumaki
The course of the superior gluteal artery (SGA) as it passes through the lumbosacral plexus is variable. The variations of the arterial course in relation to the lumbosacral plexus have focused on statistical analysis, and it is limited arterial diversity. In this study, we investigated the positional relation between the SGA and the furcal nerve (FN): guide to segmentation of the lumbosacral plexus, arising from the L4, ie, the contribution to the femoral nerve, obturator nerve, and lumbosacral trunk. We could classify the pathway of the SGA into three types based on its positional relation to the FN...
2017: Okajimas Folia Anatomica Japonica
https://www.readbyqxmd.com/read/29241265/retroperitoneoscopic-resection-of-a-lumbosacral-plexus-schwannoma-case-report-and-literature-review
#14
Bruno Freitas, Rui Figueiredo, Fabrício Carrerette, Marcus André Acioly
No abstract text is available yet for this article.
December 14, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/29224268/-applied-anatomy-study-of-posterior-approach-via-sacrectomy-for-reaching-the-deep-intrapelvic-sacral-plexus
#15
F Li, S F Wang, P C Li, Y H Xue
Objective: To observe the possibility of posterior approach via sacrectomy for reaching intrapelvic sacral plexus and expose the deep intrapelvic origin of sciatic nerve from sacral plexus in order to perform nerve graft. Methods: Five adult cadaver specimens were used in the study with prone position in May 2012. Cut off the gluteus maximus along the origins and lift to the lateral side, the piriformis was lay beneath. The sciatic nerve and the inferior gluteal nerve pierced from the infrapiriformis foramen in the operative field...
December 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/29205096/anatomical-and-functional-changes-to-the-colonic-neuromuscular-compartment-after-experimental-spinal-cord-injury
#16
Amanda R White, Gregory M Holmes
A profound reduction in colorectal transit time accompanies spinal cord injury (SCI), yet the colonic alterations after SCI have yet to be understood fully. The loss of descending supraspinal input to lumbosacral neural circuits innervating the colon is recognized as one causal mechanism. Remodeling of the colonic enteric nervous system/smooth muscle junction in response to inflammation, however, is recognized as one factor leading to colonic dysmotility in other pathophysiological models. We investigated the alterations to the neuromuscular junction in rats with experimental high-thoracic (T3) SCI...
February 9, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29200675/neurolymphomatosis-a-surreal-presentation-of-lymphoma
#17
Shikha Khandelwal, Suvinay Saxena, Disha J Hansalia
Background: Neurolymphomatosis is a neurologic complication poorly recognized by neurologists and oncologists and presents usually several months after successful treatment of systemic lymphoma. Other disorders that must be differentiated from these entities include peripheral-nerve or nerve root compression and paraneoplastic neuropathy. Aim: To describe the unusual occurrence of neurolymphomatosis in a patient of B-cell lymphoma. Method: Diagnosis was made by demonstration of enhancement of nerve roots on Magnetic Resonance Imaging of the brachial, lumbosacral plexus, peripheral nerves or by increased hyper-metabolic activity along the course of affected nerves on fluorodeoxyglucose positron emission tomography (FDG-PET)...
July 2017: Indian Journal of Medical and Paediatric Oncology
https://www.readbyqxmd.com/read/29184351/clinico-electrophysiological-and-genetic-overlaps-and-magnetic-resonance-imaging-findings-in-charcot-marie-tooth-disease-a-pilot-study-from-western-india
#18
Satish Vasant Khadilkar, Nahush D Patil, Nikhil Dhananjay Kadam, Khushnuma A Mansukhani, Bhagyadhan A Patel
Background: Charcot-Marie-Tooth (CMT) disease is clinically and genetically heterogeneous. There are no published series describing clinical, electrophysiological, and genetic information on CMT from the Indian subcontinent. Magnetic resonance imaging (MRI) neurography technique provides useful information about the plexus and roots and can be employed in patients with CMT. Settings and Design: A prospective, observational study carried out at a tertiary care hospital in Western India...
October 2017: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/29130653/-advances-in-diagnosis-and-treatment-of-posterior-distal-injury-of-pelvic-fracture
#19
REVIEW
Zhen Tan, Guang-Lin Wang
Pelvic fracture is one of the common diseases of traumatic orthopedics. With the increase of accidents such as traffic accidents,high craters and crush injuries in China,the incidence of pelvic fractures is also increasing year by year. Since pelvic bones and the ligament structure are close to neurovascular,cavity organs and the urogenital structure,early diagnosis and treatment of pelvic fractures is essential for preventing early complications and late sequelae. The treatment of pelvic ring injury has been the focus of pelvic fracture treatment,which determines the outcome of treatment...
September 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/29063256/sciatic-neurosteatosis-relationship-with-age-gender-obesity-and-height
#20
Shayna Ratner, Raamis Khwaja, Lihua Zhang, Yin Xi, Riham Dessouky, Craig Rubin, Avneesh Chhabra
AIM: To evaluate inter-reader performance for cross-sectional area and fat quantification of bilateral sciatic nerves on MRI and assess correlations with anthropometrics. METHODS: In this IRB-approved, HIPPA-compliant study, three readers performed a cross-sectional analysis of 3T lumbosacral plexus MRIs over an 18-month period. Image slices were evaluated at two levels (A and B). The sciatic nerve was outlined using a free hand region of interest tool on PACS. Proton-density fat fraction (FF) and cross-sectional areas were recorded...
October 23, 2017: European Radiology
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