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Lumbar plexus

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https://www.readbyqxmd.com/read/29159805/the-anatomy-of-the-infrarenal-lumbar-splanchnic-nerves-in-human-cadavers-implications-for-retroperitoneal-nerve-sparing-surgery
#1
Tyler S Beveridge, Dale E Fournier, Adam M R Groh, Marjorie Johnson, Nicholas E Power, Brian L Allman
Injury to the nerves of the aortic- and superior hypogastric plexuses during retroperitoneal surgery often results in significant post-operative complications, including retrograde ejaculation and/or loss of seminal emission in males. Although previous characterizations of these plexuses have done well to provide a basis for understanding the typical anatomy, additional research into the common variations of these plexuses could further optimize nerve-sparing techniques for retroperitoneal surgery. To achieve this, the present study aimed to document the prevalence and positional variability of the infrarenal lumbar splanchnic nerves (LSNs) through gross dissection of 26 human cadavers...
November 21, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/29135692/ultrasound-with-neurostimulation-compared-with-ultrasound-guidance-alone-for-lumbar-plexus-block-a-randomised-single-blinded-equivalence-trial
#2
Vanlapa Arnuntasupakul, Theerawat Chalachewa, Prangmalee Leurcharusmee, Worakamol Tiyaprasertkul, Roderick J Finlayson, De Q Tran
BACKGROUND: Ultrasound-guided lumbar plexus blocks usually require confirmatory neurostimulation. A simpler alternative is to inject local anaesthetic inside the posteromedial quadrant of the psoas muscle under ultrasound guidance. OBJECTIVE: We hypothesised that both techniques would result in similar total anaesthesia time, defined as the sum of performance and onset time. DESIGN: A randomised, observer-blinded, equivalence trial (equivalence margin = 7...
November 11, 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/29123624/state-of-education-regarding-ultrasound-guided-interventions-during-pain-fellowships-in-korea-a-survey-of-recent-fellows
#3
Hyung Tae Kim, Sae Young Kim, Gyung Jo Byun, Byung Chul Shin, Jin Young Lee, Eun Joo Choi, Jong Bum Choi, Ji Hee Hong, Seung Won Choi, Yeon Dong Kim
Background: Recently, the use of ultrasound (US) techniques in regional anesthesia and pain medicine has increased significantly. However, the current extent of training in the use of US-guided pain management procedures in Korea remains unknown. The purpose of the present study was to assess the current state of US training provided during Korean Pain Society (KPS) pain fellowship programs through the comparative analysis between training hospitals. Methods: We conducted an anonymous survey of 51 pain physicians who had completed KPS fellowships in 2017...
October 2017: Korean Journal of Pain
https://www.readbyqxmd.com/read/29110772/the-cerebrospinal-fluid-and-barriers-anatomic-and-physiologic-considerations
#4
Hayrettin Tumani, André Huss, Franziska Bachhuber
The cerebrospinal fluid (CSF) space consists of the intracerebral ventricles, subarachnoid spaces of the spine and brain (e.g., cisterns and sulci), and the central spinal cord canal. The CSF protects the central nervous system (CNS) in different ways involving metabolic homeostasis, supply of nutrients, functioning as lymphatic system, and regulation of intracranial pressure. CSF is produced by the choroid plexus, brain interstitium, and meninges, and it circulates in a craniocaudal direction from ventricles to spinal subarachnoid space from where it is removed via craniocaudal lymphatic routes and the venous system...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/29057349/clinical-evaluation-of-microendoscopy-assisted-extreme-lateral-interbody-fusion
#5
Tomohide Segawa, Hirohiko Inanami, Hisashi Koga
BACKGROUND: Extreme lateral interbody fusion (XLIF) has rapidly become a popular operative procedure for lumbar canal stenosis and scoliosis. This approach provides direct access to the lateral aspect of the disc with minimal disruption of spinal structures, including ligaments and muscles. However, it involves risk of injuries to the lumbar nerve plexus, segmental artery and intestinal tract because of the limited surgical field. This study aimed to clarify the benefit of using a microendoscope to prevent these injuries...
September 2017: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/29035893/ultrasound-guided-lumbar-plexus-block-in-supine-position
#6
Yong Liu, Xijian Ke, Xi Wu, Wei Mei
No abstract text is available yet for this article.
October 16, 2017: Anesthesiology
https://www.readbyqxmd.com/read/29028758/mr-neurography-of-lumbosacral-plexus-in-failed-back-surgery-syndrome
#7
Riham Dessouky, Mohammed Khaleel, Dalia N Khalifa, Hazim I Tantawy, Avneesh Chhabra
STUDY DESIGN: Retrospective clinical case series. OBJECTIVE: To study the role of MRN of lumbosacral plexus in management of patients with FBSS. SUMMARY OF BACKGROUND DATA: Failed back surgery syndrome (FBSS) is one of the major problems in health care, affecting up to 40% of patients following spine surgery. To date, no imaging modality has been used to effectively classify nerve compression, since nerve injuries are challenging to detect on conventional lumbar spine MRI...
October 12, 2017: Spine
https://www.readbyqxmd.com/read/29028436/pain-management-after-hip-arthroscopy-systematic-review-of-randomized-controlled-trials-and-cohort-studies
#8
Jason J Shin, Chris L McCrum, Craig S Mauro, Dharmesh Vyas
BACKGROUND: Hip arthroscopy is often associated with significant postoperative pain and opioid-associated side effects. Effective pain management after hip arthroscopy improves patient recovery and satisfaction and decreases opioid-related complications. PURPOSE: To collect, examine, and provide a comprehensive review of the available evidence from randomized controlled trials and comparative studies on pain control after hip arthroscopy. STUDY DESIGN: Systematic review...
October 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28960686/quantifying-response-to-intracranial-pressure-normalization-in-idiopathic-intracranial-hypertension-via-dynamic-neuroimaging
#9
Svetlana Lublinsky, Anat Kesler, Alon Friedman, Anat Horev, Ilan Shelef
BACKGROUND: Idiopathic intracranial hypertension (IIH) is characterized by elevated intracranial pressure without a clear cause. PURPOSE: To investigate dynamic imaging findings in IIH and their relation to mechanisms underlying intracranial pressure normalization. STUDY TYPE: Prospective. POPULATION: Eighteen IIH patients and 30 healthy controls. FIELD STRENGTH/SEQUENCE: T1 -weighted, venography, fluid attenuation inversion recovery, and apparent diffusion coefficients were acquired on 1...
September 27, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28932698/quantitative-magnetic-resonance-mr-neurography-for-evaluation-of-peripheral-nerves-and-plexus-injuries
#10
REVIEW
Teodoro Martín Noguerol, Rafael Barousse, Mariano Socolovsky, Antonio Luna
Traumatic conditions of peripheral nerves and plexus have been classically evaluated by morphological imaging techniques and electrophysiological tests. New magnetic resonance imaging (MRI) studies based on 3D fat-suppressed techniques are providing high accuracy for peripheral nerve injury evaluation from a qualitative point of view. However, these techniques do not provide quantitative information. Diffusion weighted imaging (DWI) and diffusion tensor imaging (DTI) are functional MRI techniques that are able to evaluate and quantify the movement of water molecules within different biological structures...
August 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28913502/regional-anesthesia-for-a-total-knee-arthroplasty-on-an-adult-patient-with-spastic-diplegia-and-an-intrathecal-baclofen-pump
#11
Elird Bojaxhi, David R Salek, Courtney E Sherman, Roy A Greengrass
We describe the clinical presentation of a patient with spastic diplegia, and its unique perioperative challenges. Opioids and antispasmodic medications are the primary therapy for managing pain and spasticity in the perioperative setting. However, such combination results in several side-effects and their sedative properties are synergistic. A 64-year-old woman with a history of spastic diplegia and an intrathecal baclofen pump for the treatment of her lower extremity spasticity was scheduled for a third elective left knee arthroplasty...
April 2017: Rom J Anaesth Intensive Care
https://www.readbyqxmd.com/read/28870349/effect-of-axial-vertical-vibration-on-degeneration-of-lumbar-intervertebral-discs-in-modified-bipedal-rats-an-in-vivo-study
#12
Xiao Liang, Hao Shen, Wei-Dong Shi, Shan Ren, Wei Jiang, Hao Liu, Peng Yang, Zhi-Yong Sun, Jun Lin, Hui-Lin Yang
OBJECTIVE: To assess the effects of axial vibrations on gene expression and lumbar intervertebral disc degeneration in vivo. METHODS: A modified bipedal rat model was established using a brachial plexus rhizotomy approach to imitate human upright posture. The experimental animals were randomly divided into three groups: control, vertical vibration, and whole-body vibration. Gene expression in degeneration of the intervertebral discs was assessed by reverse transcription-quantitative polymerase chain reaction...
July 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28806216/psoas-versus-femoral-blocks-a-registry-analysis-of-risks-and-benefits
#13
Hagen Bomberg, Andrea Huth, Stefan Wagenpfeil, Paul Kessler, Hinnerk Wulf, Thomas Standl, André Gottschalk, Jens Döffert, Werner Hering, Jürgen Birnbaum, Claudia Spies, Bernd Kutter, Jörg Winckelmann, Gerald Burgard, Oliver Vicent, Thea Koch, Daniel I Sessler, Thomas Volk, Alexander Raddatz
BACKGROUND AND OBJECTIVES: Psoas blocks are an alternative to femoral nerve blocks and have the potential advantage of blocking the entire lumbar plexus. However, the psoas muscle is located deeply, making psoas blocks more difficult than femoral blocks. In contrast, while femoral blocks are generally easy to perform, the inguinal region is prone to infection. We thus tested the hypothesis that psoas blocks are associated with more insertion-related complications than femoral blocks but have fewer catheter-related infections...
November 2017: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/28792797/magnetic-resonance-imaging-and-clinical-findings-associated-with-choroid-plexus-spinal-cord-drop-metastases
#14
Carmen L Yeamans, Rodrigo Gutierrez-Quintana, Allison Haley, Catherine G Lamm
A 5 yr old castrated male whippet presented with a unique presentation of ambulatory paraparesis and subsequent diagnosis of primary intracranial choroid plexus carcinoma, with metastases to the cervical, thoracic, lumbar, and sacral spinal cord segments. Magnetic resonance imaging was performed initially of the thoracolumbar vertebral column and was followed by MRI sequences of the brain for confirmation of the presence of a primary intracranial tumor. The dog was euthanized immediately following diagnostic imaging due to the severity of clinical signs and poor prognosis...
August 9, 2017: Journal of the American Animal Hospital Association
https://www.readbyqxmd.com/read/28781205/psoas-compartment-and-sacral-plexus-block-via-electrostimulation-for-pelvic-limb-amputation-in-dogs
#15
Jonathon M Congdon, Pedro Boscan, Clara S S Goh, Marlis Rezende
OBJECTIVE: To assess the efficacy of psoas compartment and sacral plexus block for pelvic limb amputation in dogs. STUDY DESIGN: Prospective clinical study. ANIMALS: A total of 16 dogs aged 8±3 years and weighing 35±14 kg (mean±standard deviation). METHODS: Dogs were administered morphine (0.5 mg kg(-1)) and atropine (0.02 mg kg(-1)); anesthesia was induced with propofol and maintained with isoflurane. Regional blocks were performed before surgery in eight dogs with bupivacaine (2...
March 22, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28763319/compressed-air-injection-technique-for-shamrock-lumbar-plexus-block
#16
Ban C H Tsui
No abstract text is available yet for this article.
September 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28749094/superiority-of-ultrasound-guided-shamrock-lumbar-plexus-block
#17
Martin V Nielsen, Thomas F Bendtsen, Jens Børglum
BACKGROUND: Ultrasound-guided lumbar plexus block performed with the Shamrock approach has received much interest since the technique was first described in 2013. The technique is believed to be faster and easier to perform and possibly safer in regards to potential complications compared with other lumbar plexus blocks. METHODS: In order to outline some favorable characteristics of the Shamrock lumbar plexus block, we performed an exhaustive search of the current literature; even though it is rather limited...
July 26, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28697031/epidural-injections-contraindicated-for-lumbar-radiculopathy-in-may-thurner-syndrome-a-case-report
#18
Michael Sniderman
A 59-year-old patient presented to the chronic pain clinic with a 6-week history of worsening lumbar back pain, bilateral thigh pain, and unilateral radiculopathy. Magnetic resonance imaging revealed mild discogenic and facetogenic disease, but significant epidural venous plexus engorgement compressing the thecal sac. The patient reported previous treatment by a vascular surgeon for May-Thurner Syndrome, a type of inferior vena caval obstruction, yet had not experienced these specific complaints. A discussion with the radiologist confirmed worsening of the patient's May-Thurner Syndrome was the likely cause of the patient's symptoms...
November 15, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28668438/lumbar-plexus-in-patients-with-chronic-inflammatory-demyelinating-polyneuropathy-evaluation-with-3d-nerve-sheath-signal-increased-with-inked-rest-tissue-rapid-acquisition-of-relaxation-enhancement-imaging-3d-shinkei
#19
Akio Hiwatashi, Osamu Togao, Koji Yamashita, Kazufumi Kikuchi, Ryotato Kamei, Daichi Momosaka, Hidenori Ogata, Ryo Yamasaki, Masami Yoneyama, Jun-Ichi Kira, Hiroshi Honda
PURPOSE: To evaluate whether 3D SHINKEI in the lumbar plexus could identify patients with chronic inflammatory demyelinating polyneuropathy (CIDP). MATERIALS AND METHODS: Twenty-one patients with CIDP and 15 non-CIDP patients were studied in this retrospective study. The SNR, contrast-to-noise ratio (CNR), contrast ratio (CR) and the size of the lumbar ganglions and roots were measured. Statistical analyses were performed with Mann-Whitney U test and receiver operating characteristics (ROC) analysis...
August 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28658039/radiographic-analysis-of-psoas-morphology-and-its-association-with-neurovascular-structures-at-l4-5-with-reference-to-lateral-approaches
#20
Philip K Louie, Ankur S Narain, Fady Y Hijji, Alem Yacob, Kelly H Yom, Frank M Phillips, Kern Singh
STUDY DESIGN: Retrospective imaging review. OBJECTIVE: Utilize magnetic resonance imaging (MRI) to expand the anatomical description of psoas morphology and its association with neurovascular structures at L4-5. SUMMARY OF BACKGROUND DATA: Anatomical psoas muscle variants may present a greater risk of neurovascular injury at the L4-5 level during lateral transpsoas approaches. METHODS: Axial L4-5 sections of consecutive patients who obtained lumbar MRIs were analyzed...
June 27, 2017: Spine
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