scholarly journals MR Neurography of the Lumbosacral Plexus for Lower Extremity Radiculopathy: Frequency of Findings, Characteristics of Abnormal Intraneural Signal, and Correlation with Electromyography

2018 ◽  
Vol 39 (11) ◽  
pp. 2154-2160 ◽  
Author(s):  
J.L. Chazen ◽  
J. Cornman-Homonoff ◽  
Y. Zhao ◽  
M. Sein ◽  
N. Feuer
Keyword(s):  
Lower Extremity ◽  
Lumbosacral Plexus ◽  
Mr Neurography

Enhanced MR neurography of the lumbosacral plexus with robust vascular suppression and improved delineation of its small branches

2020 ◽  
Vol 129 ◽  
pp. 109128
Author(s):  
Youlai Zhang ◽  
Xiangchuang Kong ◽  
Qian Zhao ◽  
Xi Liu ◽  
Yudong Gu ◽  
...  
Keyword(s):  
Lumbosacral Plexus ◽  
Mr Neurography

Improved visualization of diffusion-prepared MR neurography (SHINKEI) in the lumbosacral plexus combining high-intensity reduction (HIRE) technique

2020 ◽  
Vol 69 ◽  
pp. 22-27
Author(s):  
Hitoshi Tadenuma ◽  
Kayoko Abe ◽  
Masami Yoneyama ◽  
Yasuhiro Goto ◽  
Mamoru Takeyama ◽  
...  
Keyword(s):  
High Intensity ◽  
Lumbosacral Plexus ◽  
Mr Neurography

scholarly journals Demystifying MR Neurography of the Lumbosacral Plexus: From Protocols to Pathologies

2018 ◽  
Vol 2018 ◽  
pp. 1-20 ◽  
Author(s):  
Francisco J. Muniz Neto ◽  
Eduardo N. Kihara Filho ◽  
Frederico C. Miranda ◽  
Laercio A. Rosemberg ◽  
Durval C. B. Santos ◽  
...  
Keyword(s):  
High Resolution ◽  
Imaging Technique ◽  
High Resolution Imaging ◽  
Lumbosacral Plexus ◽  
Mr Neurography ◽  
Magnetic Resonance Neurography ◽  
Inflammatory Conditions ◽  
Imaging Protocols ◽  
Key Points ◽  
Resolution Imaging

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.

Three-Dimensional MR Neurography of the Lumbosacral Plexus

2015 ◽  
Vol 19 (02) ◽  
pp. 149-159 ◽  
Author(s):  
Shai Rozen ◽  
Kelly Scott ◽  
Avneesh Chhabra
Keyword(s):  
Three Dimensional ◽  
Lumbosacral Plexus ◽  
Mr Neurography

Diffusion-weighted MR neurography of the brachial and lumbosacral plexus: 3.0T versus 1.5T imaging

2015 ◽  
Vol 84 (4) ◽  
pp. 696-702 ◽  
Author(s):  
P. Mürtz ◽  
M. Kaschner ◽  
A. Lakghomi ◽  
J. Gieseke ◽  
W.A. Willinek ◽  
...  
Keyword(s):  
Lumbosacral Plexus ◽  
Mr Neurography ◽  
Diffusion Weighted

scholarly journals Lumbosacral plexus entrapment syndrome. Part one: A common yet little-known cause of chronic pelvic and lower extremity pain

2019 ◽  
pp. 124-137
Author(s):  
Kjetil Larsen ◽  
George C. Chang Chien
Keyword(s):  
Lower Extremity ◽  
Thoracic Outlet Syndrome ◽  
Lower Body ◽  
Lumbosacral Plexus ◽  
Entrapment Syndrome ◽  
Diagnostic Protocol ◽  
Lower Extremity Pain ◽  
Psoas Major ◽  
Double Crush ◽  
Severe Weakness

Lumbosacral plexus entrapment syndrome (LPES) is a little-known but common cause of chronic lumbopelvic and lower extremity pain. The lumbar plexus, including the lumbosacral tunks emerge through the fibers of the psoas major, and the proximal sciatic nerve beneath the piriformis muscles. Severe weakness of these muscles may lead to entrapment plexopathy, resulting in diffuse and non-specific pain patterns throughout the lumbopelvic complex and lower extremities (LPLE), easily mimicking other diagnoses and is therefore likely to mislead the interpreting clinician. It is a pathology very similar to that of thoracic outlet syndrome, but for the lower body. This two-part manuscript series was written in an attempt to demonstrate the existence, pathophysiology, diagnostic protocol as well as interventional strategy for LPES, and its efficacy.Piriformis syndrome; Nerve entrapment; Double-crush; Pain, Chronic; Fibromyalgia Citation: Larsen K, Chien GCC. Lumbosacral plexus entrapment syndrome. Part one: A common yet little-known cause of chronic pelvic and lower extremity pain. Anaesth pain & intensiv care 2019;23(2):124-137

scholarly journals Lumbosacral plexus entrapment syndrome. Part two: Symptomology and rehabilitative trials

2019 ◽  
pp. 138-144
Author(s):  
Kjetil Larsen ◽  
George C. Chang Chien
Keyword(s):  
Lower Extremity ◽  
Rating Scale ◽  
Treatment Protocol ◽  
Numeric Rating Scale ◽  
Symptom Duration ◽  
Low Back ◽  
Lumbosacral Plexus ◽  
Entrapment Syndrome ◽  
Patient Reported ◽  
Calf Pain

Background: Lumbosacral plexus entrapment syndrome (LPES) is a little-known but common cause of chronic lumbopelvic and lower extremity pain. The authors document the clinical course of 61 patients who were diagnosed and treated for LPES between May 2016 and October 2018. The study is aimed to evaluate the efficacy of our proposed diagnostic and conservative treatment protocol for LPES, clinically.Methodology: This is a retrospective cohort study of patients suffering from LPES. Patients were included in this study if they compatible symptoms with LPES with symptoms of low back, pelvic, groin, genital, thigh or calf pain after other more common etiologies have been excluded. Additionally, these patients had at least 5 positive provocative Tinel’s tests applied to various lumbopelvic and lower extremity (LPLE) nerve branches yielding => 7 (numeric rating scale) NRS, and weakness of one or more myotomes of the lower body. The group in its entirety was treated with gentle strengthening of the psoas major and piriformis muscles. The primary outcome measure was patient reported satisfaction and improvement including: Full, significant, moderate, slight, or no improvement in pain and symptoms. Patients were followed for up to two years.Results: The most common complaints amongst the patient pool were low back, groin, pelvic, posterior/lateral calf pain. Additionally, 17 patients (28%) stated that everything in the LPLE hurts, consistent with plexalgia. 13 patients were lost to follow-up as they did not reschedule treatment, for unknown reasons. Amongst the remaining 48 patients, 25 recovered fully (52%), 12 significantly (25%), and five moderately (10,4%). Five patients had a slight improvement (10,4%), and two no improvement whatsoever (4%). The average recovery times were mostly consistent with the time of affliction. Patients with a symptom duration of less than one year, generally recovered within 4 months. One to four years, within 10,5 months. Five to nine years, 7,5 months. And, finally, more than 10 years, within 18 months.Conclusion: Non-specific pain syndromes in the LPLE where other causes have been excluded, may be attributable to underlying LPES. In this study, a high correlation between the diagnostic & interventional protocols, and beneficial patient outcomes were demonstrated. However, more statistical and long-term research is needed.Citation: Larsen K, Chien GCC. Lumbosacral plexus entrapment syndrome. Part Two: Symptomology and rehabilitative trials. Anaesth pain & intensiv care 2019;23(2):138-144

scholarly journals High-Resolution 3-T MR Neurography of the Lumbosacral Plexus

Radiographics ◽  
2013 ◽  
Vol 33 (4) ◽  
pp. 967-987 ◽  
Author(s):  
Theodoros Soldatos ◽  
Gustav Andreisek ◽  
Gaurav K. Thawait ◽  
Roman Guggenberger ◽  
Eric H. Williams ◽  
...  
Keyword(s):  
High Resolution ◽  
Lumbosacral Plexus ◽  
Mr Neurography
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