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lumbosacral plexus

Erlick A C Pereira, Mohammad Farwana, Khai S Lam
Spinal stenosis and low-grade spondylolisthesis produce symptoms of neural compression that can be treated with extreme lateral lumbar interbody fusion (XLIF) via indirect decompression. This study aimed to investigate whether the restoration of disc dimensions would relieve symptoms of radiculopathy, claudication and back pain. In this retrospective study, patients undergoing XLIF surgery for relief of radicular symptoms or degenerative disc disease were included. Radiologically proven changes were used to assess the modes of degeneration...
October 1, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
W Teng, H Chen, F Guo, X Du, X Fu, Y Fang, H Zhang, M Fang, M Ding
Neurokinin-1 receptor (NK1R) is a high affinity Substance P (SP) receptor and plays a key role in visceral hypersensitivity in irritable bowel syndrome (IBS). Early life stress is a significant risk factor in IBS. The aim of the present study was to investigate the influence of neonatal maternal separation on the expression and distribution of SP and its receptor along the brain-gut axis in a neonatal maternally separated rat model with visceral hypersensitivity. Male neonatal Sprague-Dawley rats, 2-21-day old, were randomly distributed into maternal separation groups of 3 h daily maternal separation (MS) or non-handling (NH)...
August 30, 2016: Genetics and Molecular Research: GMR
Na Niu, Xinxin Cao, Ruixue Cui
Cervical and lumbosacral nerve roots and plexus involvement in Erdheim-Chester disease (ECD) is rare. A 50-year-old man with progressive edema in bilateral lower extremities, numbness, weakness, and muscle atrophy of upper limb for 2 years had been misdiagnosed of neuritis or cervical spondylosis until he presented bone pain. In addition to bilateral symmetric involvement in long bones, bilateral hypermetabolism in cervical and lumbosacral nerve roots was found by FDG PET/CT scan. ECD was diagnosed by bone biopsy...
November 2016: Clinical Nuclear Medicine
Avneesh Chhabra, Courtney A McKenna, Vibhor Wadhwa, Gaurav K Thawait, John A Carrino, Gary P Lees, A Lee Dellon
AIM: To evaluate the pudendal nerve segments that could be identified on magnetic resonance neurography (MRN) before and after surgical marking of different nerve segments. METHODS: The hypothesis for this study was that pudendal nerve and its branches would be more easily seen after the surgical nerve marking. Institutional board approval was obtained. One male and one female cadaver pelvis were obtained from the anatomy board and were scanned using 3 Tesla MRI scanner using MR neurography sequences...
July 28, 2016: World Journal of Radiology
Nathaniel M Robbins, Vinil Shah, Nancy Benedetti, Jason F Talbott, Cynthia T Chin, Vanja C Douglas
Magnetic resonance neurography (MRN) is an important tool to detect abnormalities of peripheral nerves. This pictorial review demonstrates the MRN features of a variety of neuropathies affecting the lumbosacral plexus (LSP) and lower extremity nerves, drawn from over 1200 MRNs from our institution and supplemented by the literature. Abnormalities can be due to spinal compression, extraspinal compression, malignancy, musculoskeletal disease, iatrogenesis, inflammation, infection, and idiopathic disorders. We discuss indications and limitations of MRN in diagnosing LSP neuropathies...
July 11, 2016: Clinical Imaging
G Cho Sims, E Boothe, R Joodi, A Chhabra
BACKGROUND AND PURPOSE: The number of centers currently performing 3D fat-suppressed isotropic imaging is limited. If the angular orientations of the major lumbosacral plexus nerves on 3D isotropic MR neurography could be determined, similar planes could be prescribed during acquisition of 2D or 3D nonisotropic techniques for optimal depiction of various nerves. Our aim was to determine oblique sagittal and coronal angular measurements for longitudinal depiction of lumbosacral plexus nerves...
July 7, 2016: AJNR. American Journal of Neuroradiology
Dong Cheng, Lei Hu, Feng Xian, Jian Zhong, Yuejuan Zhang, Gangwei Wang, Jiyuan Ma, Hao Xu
OBJECTIVE: To observe the clinical effects of needle-pricking therapy, a newly medical and minimally invasive technique, for functional retrograde ejaculation and to explore its mechanism. Methods Thirty-six patients with functional retrograde ejaculation were randomly divided into an observation group(19 cases) and a control group(17 cases) In the observation group,needle-pricking therapy was used at Guanyuan(CV 4) and bilateral sacral plexus nerve,lumbar 1 nerve and greater occipital nerve stimulating points,once a week...
February 2016: Zhongguo Zhen Jiu, Chinese Acupuncture & Moxibustion
Dirk Bäumer, David James Grant, Ravi Knight, Camilla Buckley, David Bennett, Simon Rinaldi
A 71-year-old woman presented with severe back pain, limb weakness and cranial nerve dysfunction associated with high cerebrospinal fluid (CSF) protein; we diagnosed Guillain-Barré syndrome and her symptoms completely resolved after intravenous immunoglobulin. Over the next 4 years, she had three further episodes of excruciating back pain accompanied by raised CSF protein, but without weakness, sensory loss, or abnormalities in routine nerve conduction studies. Sensory evoked potentials suggested proximal demyelination and lumbosacral plexus imaging suggested inflammation...
June 16, 2016: Practical Neurology
Pierce Nunley, Faheem Sandhu, Kelly Frank, Marcus Stone
Introduction. The lateral lumbar interbody fusion (LLIF) surgical approach has potential advantages over other approaches but is associated with some unique neurologic risks due to the proximity of the lumbosacral plexus. The present study analyzed complications following LLIF surgical approach using a novel single flat-blade retractor system. Methods. A retrospective data collection of patients receiving LLIF using a novel single flat-blade retractor system at two institutions in the US. Inclusion criteria were all patients receiving an LLIF procedure with the RAVINE® Lateral Access System (K2M, Inc...
2016: BioMed Research International
Adam Bobkiewicz, Joanna Cwykiel, Maria Siemionow
PURPOSE: Selection of an appropriate model for preclinical assessment of new methods of peripheral nerve injury management is crucial. This report presents anatomic variations within brachial and lumbosacral plexuses in three selected rat strains Sprague Dawley (Hsd:Sprague Dawley SD), Lewis (LEW/SsNHsd), and Athymic Nude (Hsd:RH-Foxn1(rnu) ) rats. METHODS: Based on their strain eighteen rats were divided into three groups. A total of 90 brachial plexus nerves (axillary, musculocutaneous, median, ulnar, and radial nerves) and 72 lumbosacral plexus nerves (sciatic, tibial, common peroneal, and sural nerves) were analyzed for the length, diameter and correlation with the body weight...
June 7, 2016: Microsurgery
Paul Seror
A century after the first description of neuralgic amyotrophy (NA), its pathophysiology remains unknown. An inflammatory (auto)immune pathophysiology is presumed, with mechanical or infectious precipitating conditions, which triggers attacks. Clinically, NA is an acute and painful unique or multiple mononeuropathy that causes palsy, amyotrophy and sensory loss in an asymmetric and patchy distribution. It involves the upper brachial plexus rather than the other parts but also may involve the cervical plexus, lumbosacral plexus and cranial nerves...
June 2, 2016: Joint, Bone, Spine: Revue du Rhumatisme
Jodi M Carter, Benjamin M Howe, John R Hawse, Caterina Giannini, Robert J Spinner, Karen J Fritchie
Neuromuscular choristoma (NMC) is a very rare, developmental malformation characterized by the endoneurial intercalation of mature muscle fibers among peripheral nerve fibers. NMC typically arises in the major proximal peripheral nerves, most commonly the sciatic nerve, and may involve the lumbosacral and brachial plexus. Patients present clinically with progressive neuropathy or plexopathy. NMC is strongly associated with development of a fibromatosis, histologically identical to conventional desmoid-type fibromatosis (NMC-fibromatosis)...
October 2016: American Journal of Surgical Pathology
Gerardo E Miranda, Ruben Y Torres
OBJECTIVE: To describe the etiologies and frequency of traumatic peripheral nerve injury (TPNI) seen in the electrodiagnostic laboratory of a tertiary care hospital in Puerto Rico. METHODS: The charts of patients who underwent an electrodiagnostic study for a TPNI were revised. The main outcome measure was the frequency of each injury by anatomic location, specific nerve or nerves affected, injury mechanism, and injury severity. RESULTS: One hundred forty-six charts were included, and in them were listed a total of 163 nerve injuries; 109 (74...
June 2016: Puerto Rico Health Sciences Journal
William P Robinson, Rupal K Patel, Jesse A Columbo, Julie Flahive, Francesco A Aiello, Donald T Baril, Andres Schanzer, Louis M Messina
BACKGROUND: Most existing series of acute aortic occlusion (AAO) predate the changes in surgical and endovascular therapy of the last 2 decades. We examined the contemporary management and outcomes of AAO. METHODS: We reviewed consecutive patients with AAO at a tertiary referral center from 2004 to 2012. Outcomes were stratified and compared according to etiology and procedure performed. RESULTS: AAO in 29 patients was due to in situ thrombosis in 21 (72%) and embolism in 8 (28%) patients...
July 2016: Annals of Vascular Surgery
Allison Grayev, Scott Reeder, Amgad Hanna
PURPOSE: In the era of increasingly complex surgical techniques for peripheral nerve repair, there is a need for high spatial resolution imaging of the neural plexuses in the body. We describe our experience with chemical shift encoded MRI and its implications for patient management. MATERIALS AND METHODS: IDEAL water-fat separation is a chemical shift based method of homogeneously suppressing signal from fat, while maintaining adequate signal. This technique was used in clinical practice and the patient images reviewed...
June 2016: European Journal of Radiology
Avneesh Chhabra, John A Carrino, Sahar J Farahani, Gaurav K Thawait, Charlotte J Sumner, Vibhor Wadhwa, Vinay Chaudhary, Thomas E Lloyd
PURPOSE: To evaluate the feasibility of whole-body magnetic resonance neurography (WBMRN) in polyneuropathy for technical feasibility, distribution of nerve abnormalities, and differentiation. MATERIALS AND METHODS: Twenty WBMRN examinations were performed on a 3T scanner over 2 years. Patient demographics including history of hereditary and acquired neuropathy were recorded. The images were evaluated by two independent readers with nerve imaging experience for quality...
April 29, 2016: Journal of Magnetic Resonance Imaging: JMRI
Canan Cimsit, Tevfik Yoldemir, Ihsan Nuri Akpinar
Catamenial sciatic radiculopathy resulting from endometriosis is a rare presentation of a common disease in which the pathogenesis of pain is still under debate. A 32-year-old woman presented complaining of infertility, catamenial sciatica, and pelvic and gluteal pain. Magnetic resonance imaging showed endometriotic infiltration of the left proximal lumbosacral plexus, sacral nerve track, sciatic nerve at the sciatic notch and pudendal nerve along the iliococcygeus muscle, together with left endometrioma and deep infiltrating endometriosis lesions...
April 14, 2016: Journal of Obstetrics and Gynaecology Research
Nucelio Lemos, Marc Possover
It is long known that a large portion of the lumbosacral plexus is located intra-abdominally, in the retroperitoneal space. However, most of literature descriptions of lesions on this plexus refer to its extra-abdominal parts whereas its intra-abdominal portions are often neglected. The objective of this review article is to describe the laparoscopic anatomy of intrapelvic nerve bundles, as well as the findings and advances already achieved by Neuropelveology practitioners.
July 2015: Journal of Hip Preservation Surgery
Mark C Markowski, Sara E Wobker, Roy E Strowd, Emmanuel S Antonarakis
No abstract text is available yet for this article.
August 2016: Clinical Genitourinary Cancer
Stijn Ghijselings, Frans Bruyninckx, Hendrik Delport, Kristoff Corten
Introduction. During periacetabular osteotomy (PAO), the sciatic, femoral, and obturator nerves are at risk. Most frequently nerve lesions can be attributed to a mechanical cause; however, in the absence of a clear mechanical cause surgeons are faced with a diagnostic problem and in many cases no diagnosis will be established. We report a case of inflammatory neuropathy of the lumbosacral plexus following a PAO. Case Presentation. A 31-year-old female developed weakness of ankle and knee flexion and extension 6 months after a PAO...
2016: Case Reports in Orthopedics
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