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Nerve entrapment

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https://www.readbyqxmd.com/read/28644116/axillary-intraneural-ganglion-cysts
#1
Kartik G Krishnan, Nikhil K Prasad, Kimberly K Amrami, Paul J Kurtin, Robert J Spinner
Aside from affecting the stability of the glenohumeral joint, tears in the joint capsule can give rise to extraneural (paralabral) and, very rarely, intraneural ganglion cysts. This report presents the first two cases of axillary intraneural ganglion cysts in the literature with magnetic resonance imaging. Both cases were incidentally noted to have coexisting lesions (lymphadenopathy from an undifferentiated malignancy and suprascapular nerve entrapment, respectively). This report reinforces the applicability of the articular theory for intraneural ganglion cysts at a novel site...
2017: Journal of Surgical Orthopaedic Advances
https://www.readbyqxmd.com/read/28643681/-magnetic-resonance-neurography-for-the-identification-of-pudendal-neuralgia
#2
Claudia P Cejas, Susana Bordegaray, Nadia I Stefanoff, Cecilia Rollán, Inés T Escobar, Pablo Consigliere Rodríguez
The pudendal nerve entrapment is an entity understudied by diagnosis imaging. Various causes are recognized in relation to difficult labors, rectal, perineal, urological and gynecological surgery, pelvic trauma fracture, bones tumors and compression by tumors or pelvic pseudotumors. Pudendal neuropathy should be clinically suspected, and confirmed by different methods such as electrofisiological testing: evoked potentials, terminal motor latency test and electromyogram, neuronal block and magnetic resonance imaging...
2017: Medicina
https://www.readbyqxmd.com/read/28642652/diagnosis-and-treatment-of-posterior-interosseous-nerve-entrapment-systematic-review
#3
REVIEW
Marco Aurélio DE Moraes, Rubens Guilherme Gonçalves, João Baptista Gomes Dos Santos, João Carlos Belloti, Flávio Faloppa, Vinícius Ynoe DE Moraes
Compressive syndromes of the radial nerve have different presentations. There is no consensus on diagnostic and therapeutic methods. The aim of this review is to summarize such methods. Eletronic searches related terms, held in databases (1980-2016): Pubmed (via Medline), Lilacs (via Scielo) and Google Scholar. Through pre-defined protocol, we identified relevant studies. We excluded case reports. Aspects of diagnosis and treatment were synthesized for analysis and tables. Quantitative analyzes were followed by their dispersion variables...
January 2017: Acta Ortopedica Brasileira
https://www.readbyqxmd.com/read/28620557/suprascapular-nerve-entrapment-caused-by-protrusion-of-an-intraosseous-ganglion-of-the-glenoid-into-the-spinoglenoid-notch-a-rare-cause-of-posterior-shoulder-pain
#4
Daichi Ishimaru, Akihito Nagano, Nobuo Terabayashi, Yutaka Nishimoto, Haruhiko Akiyama
We describe a case of suprascapular nerve entrapment caused by protrusion of an intraosseous ganglion of the glenoid into the spinoglenoid notch. A 47-year-old man with left shoulder pain developed an intraosseous cyst in the left glenoid, which came into contact with the suprascapular nerve. The area at which the patient experienced spontaneous shoulder pain was innervated by the suprascapular nerve, and 1% xylocaine injection into the spinoglenoid notch under ultrasonographic guidance relieved the pain. Therefore, we concluded that the protrusion of an intraosseous cyst of the glenoid into the spinoglenoid notch was a cause of the pain, and performed curettage...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/28616261/nerve-entrapment-as-a-cause-of-shoulder-pain-in-the-spinal-cord-injured-patient
#5
Catherine M Curtin, Carl-Goran Hagert, Claes Hultling, Elisabet Hagert
INTRODUCTION: Many people with chronic spinal cord injury (SCI) develop shoulder pain, which can adversely impact transfers and independence. Yet effective treatments remain elusive. CASE PRESENTATION: This report presents two patients with tetraplegia who had long-standing shoulder pain. Our exam showed muscle weakness and point tenderness, suggestive of nerve entrapments of the radial and axillary nerves in the posterior shoulder. These nerves were surgically decompressed and post-operatively the patients' pain resolved...
2017: Spinal Cord Series and Cases
https://www.readbyqxmd.com/read/28614252/suprascapular-nerve-entrapment-caused-by-an-intraosseous-ganglion-of-the-scapula-a-case-report
#6
Jung Ryul Kim, Sung Il Wang
RATIONALE: Suprascapular nerve compression is a rare but important entity that is often missed in clinical practice. Nerve dysfunction caused by an intraosseous ganglion of the glenoid is extremely rare, to the best of our knowledge, only 1 case of suprascapular nerve entrapment due to an intraosseous ganglion cyst has been reported previously in the published literature. PATIENT CONCERNS: We report a 61-year-old woman who had complained right shoulder pain that lasted over 3 years which was exacerbated by overhead activities...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28611388/aberrant-plasticity-of-peripheral-sensory-axons-in-a-painful-neuropathy
#7
Takashi Hirai, Yatendra Mulpuri, Yanbing Cheng, Zheng Xia, Wei Li, Supanigar Ruangsri, Igor Spigelman, Ichiro Nishimura
Neuronal cells express considerable plasticity responding to environmental cues, in part, through subcellular mRNA regulation. Here we report on the extensive changes in distribution of mRNAs in the cell body and axon compartments of peripheral sensory neurons and the 3' untranslated region (3'UTR) landscapes after unilateral sciatic nerve entrapment (SNE) injury in rats. Neuronal cells dissociated from SNE-injured and contralateral L4 and L5 dorsal root ganglia were cultured in a compartmentalized system. Axonal and cell body RNA samples were separately subjected to high throughput RNA sequencing (RNA-Seq)...
June 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28594495/ulnar-tunnel-syndrome-radial-tunnel-syndrome-anterior-interosseous-nerve-syndrome-and-pronator-syndrome
#8
Adam B Strohl, David S Zelouf
In addition to the more common carpal tunnel and cubital tunnel syndromes, orthopaedic surgeons must recognize and manage other potential sites of peripheral nerve compression. The distal ulnar nerve may become compressed as it travels through the wrist, which is known as ulnar tunnel or Guyon canal syndrome. The posterior interosseous nerve may become entrapped in the proximal forearm as it travels through the radial tunnel, which results in a pain syndrome without motor weakness. The median nerve may become entrapped in the proximal forearm, which can result in a variety of symptoms...
February 15, 2017: Instructional Course Lectures
https://www.readbyqxmd.com/read/28590289/comparison-of-inching-electrodiagnosis-method-and-ultrasonographic-findings-in-the-determination-of-median-nerve-entrapment-site-in-carpal-tunnel-syndrome
#9
Asma Azadeh, Attiyeh Vasaghi, Reza Jalli, Mohammadreza Emad
OBJECTIVE: The purpose of the study was to evaluate the diagnostic value of both inching method through the electrodiagnostic test and ultrasonographic assay in localizing the site of entrapment in patients with symptoms and signs of carpal tunnel syndrome. DESIGN: Thirty-two hands with confirmed carpal tunnel syndrome through electrodiagnostic test and 30 hands as control group were enrolled. For both groups, sensory and motor latencies by inching technique and cross-sectional area by ultrasonography were measured at the inching points...
June 6, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28584314/is-ulnar-nerve-entrapment-at-wrist-frequent-among-patients-with-carpal-tunnel-syndrome-occupationally-exposed-to-monotype-wrist-movements
#10
Magdalena Lewańska, Jolanta Walusiak-Skorupa
OBJECTIVES: Association between carpal tunnel syndrome (CTS) and ulnar nerve entrapment at wrist remains controversial. The aim of the study has been to investigate the prevalence of Guyon's canal syndrome amongst patients diagnosed with the CTS, occupationally exposed to repetitive wrist movements. MATERIAL AND METHODS: The retrospective analysis of 310 patients (268 females, 42 males) representing the mean age of 52±7 years old hospitalized for the suspected occupational CTS was performed...
December 30, 2016: International Journal of Occupational Medicine and Environmental Health
https://www.readbyqxmd.com/read/28571125/preinguinal-splitting-and-reunion-of-femoral-nerve-entrapping-the-fleshy-fibres-of-iliacus-muscle-a-case-report
#11
L S Ashwini, S Nagabhooshana Somayaji, Mohandas Rao, Sapna Marpalli
Division of nerves close to their origin and muscular entrapments by nerves in the limbs is not very common. Femoral nerve is the largest branch of the lumbar plexus and arises from dorsal divisions of ventral rami of L2 to L4 spinal nerves. During routine cadaveric dissection for first year medical students at Melaka Manipal Medical College (Manipal Campus), Karnataka, India, we observed a variation in the division and course of left femoral nerve in about 65-year-old male cadaver. The femoral nerve was split into two divisions above the inguinal ligament after its origin from the lumbar plexus...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28570541/preparation-and-characterization-of-novel-hdl-mimicking-nanoparticles-for-nerve-growth-factor-encapsulation
#12
Jing Zhu, Xiaowei Dong
The objective of this article is to introduce preparation and characterization methods for nerve growth factor (NGF)-loaded, high-density, lipoprotein (HDL)-mimicking nanoparticles (NPs). HDLs are endogenous NPs and have been explored as vehicles for the delivery of therapeutic agents. Various methods have been developed to prepare HDL-mimicking NPs. However, they are generally complicated, time consuming, and difficult for industrial scale-up. In this study, one-step homogenization was used to mix the excipients and form the prototype NPs...
May 22, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28555250/ultrasound-biomechanical-anatomy-of-the-soft-structures-in-relation-to-the-ulnar-nerve-in-the-cubital-tunnel-of-the-elbow
#13
Paul Michelin, Grégoire Leleup, Mourad Ould-Slimane, Marie Caroline Merlet, Benjamin Dubourg, Fabrice Duparc
BACKGROUND: Chronic ulnar nerve entrapment worsened by elbow flexion is the most common injury, but rare painful conditions may also be related to ulnar nerve instability. The posterior bundle of the medial collateral ligament (pMCL) and the retinaculum, respectively form a soft floor and a ceiling for the cubital tunnel. The aim of our study was to dynamically assess these soft structures of the cubital tunnel focusing on those involved in the biomechanics of the ulnar nerve. METHODS: Forty healthy volunteers had a bilateral ultrasonography of the cubital tunnel...
May 29, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28553916/-pudendal-neuralgia-diagnosed-by-electrophysiological-examination
#14
Hatice Isik, Anders Fuglsang-Frederiksen, Kirsten Pugdahl, Hatice Tankisi
A 62-year-old man with suspected pudendal neuralgia was admitted to a department of clinical neurophysiology for examination. The patient had experienced increasingly altered sensations in the groin, particularly in form of pain in a sitting position. The neurophysiological studies substantiated the suspicion. Pudendal neuralgia is a painful neuropathic condition. The most frequent cause is entrapment of the pudendal nerve in the pelvis. The diagnosis is made clinically by using Nantes criteria, and neurophysiological studies of the perineum are important supplements when pudendal nerve entrapment is suspected...
May 22, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28553852/an-anatomical-study-of-additional-radial-wrist-extensors-including-a-unique-extensor-carpi-radialis-accessorius
#15
Charles Timothy West, David Ricketts, Cecilia Brassett
BACKGROUND: In this study, 82 forearms from 41 cadavers were dissected to establish the incidence of variant additional radial wrist extensors. Three variants have been described in the literature: extensor carpi radialis intermedius (ECRI), extensor carpi radialis accessorius (ECRA) and extensor carpi radialis tertius (ECRT). MATERIALS AND METHODS: Of the 41 cadavers studied, 5/41 (12%) had an additional radial wrist extensor. Of these 5 individuals, 2 had bilateral additional muscles and 3 were unilateral...
May 29, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28538254/acute-demyelinating-polyneuropathy-as-presentation-of-hereditary-neuropathy-with-liability-to-pressure-palsies-in-a-patient-who-exercised-regularly-in-the-army
#16
Malathi Perugula, Gulshan Uppal, Miguel Chuquilin
Acute generalized neuropathy as the presenting manifestation of hereditary neuropathy with liability to pressure palsies (HNPP) is rare. We report a 19-year-old Army recruit who exercised regularly for 9 months and presented with 2 weeks of numbness, tingling, and weakness in both upper and lower extremities, starting 2 weeks after influenza vaccination and 1 day after vigorous exercise. Based on acute onset, clinical examination and electrophysiological findings, Guillain-Barre syndrome was diagnosed, and intravenous immunoglobulin was administered with minimal improvement...
June 2017: Journal of Clinical Neuromuscular Disease
https://www.readbyqxmd.com/read/28528878/occupational-prognosis-factors-for-ulnar-nerve-entrapment-at-the-elbow-a-systematic-review
#17
M Fadel, R Lancigu, G Raimbeau, Y Roquelaure, A Descatha
Although ulnar nerve entrapment is the second most common entrapment neuropathy, there is a dearth of studies identifying occupational prognosis factors. We carried out a systematic review of the occupational prognosis factors for ulnar nerve entrapment in order to identify professions at risks and allow better follow-up for their workers. Using the key words, "ulnar OR cubital", "neuropathy OR tunnel", and "work OR occupational" without limitations, original prospective studies were selected from four databases (PubMed, Embase, Web of Science, Cochrane Library) after two rounds (valid design, valid prognosis outcome reported, valid work exposure)...
May 18, 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28526166/transhumeral-anterior-radial-nerve-transposition-to-simplify-anticipated-future-humeral-reconstruction
#18
REVIEW
David A Muzykewicz, Reid A Abrams
Anterior transhumeral radial nerve transposition has been described in the treatment of humeral shaft fracture to protect the nerve from implant irritation or callus entrapment. Transposing the radial nerve through a facilitating humeral defect also simplifies revision surgery should nonunion result. Here we describe a surgical technique for anterior transhumeral radial nerve transposition for complex humeral reconstruction when subsequent revision surgery is anticipated. Three cases are used for illustration: (1) revision of a total elbow arthroplasty with periprosthetic fracture; (2) revision of a total elbow arthroplasty after aseptic loosening from an allograft/prosthesis composite; and (3) septic humeral nonunion with substantial bone loss...
May 16, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28522988/multiple-sites-ultrasonography-of-peripheral-nerves-in-differentiating-charcot-marie-tooth-type-1a-from-chronic-inflammatory-demyelinating-polyradiculoneuropathy
#19
Jingwen Niu, Liying Cui, Mingsheng Liu
INTRODUCTION: Multiple sites measurement of cross-sectional areas (CSA) by ultrasound was performed to differentiate Charcot-Marie-Tooth type 1A (CMT1A) and chronic inflammatory demyelinating polyradiculoneuropathy (CIDP). METHODS: Nine patients with CMT1A, 28 patients with CIDP, and 14 healthy controls (HC) were recruited prospectively. Consecutive ultrasonography scanning was performed from wrist to axilla on median and ulnar nerves. CSAs were measured at 10 predetermined sites of each nerve...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28508761/posterior-branches-of-lumbar-spinal-nerves-part-ii-lumbar-facet-syndrome-pathomechanism-symptomatology-and-diagnostic-work-up
#20
Katarzyna Kozera, Bogdan Ciszek, Paweł Szaro
Posterior branches of the lumbar spinal nerves are the anatomic substrate of pain in the lower back, sacrum and the gluteal area. Such pain may be associated with various pathologies which cause pain in the posterior branches of the lumbar spinal nerves due to entrapment, mechanical irritation or inflammatory reaction and/or degeneration. The posterior branches are of significant functional importance, which is related to the function of the structures they supply, including facet joints, which are the basic biomechanical units of the spine...
April 12, 2017: Ortopedia, Traumatologia, Rehabilitacja
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