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Nerve entrapment

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https://www.readbyqxmd.com/read/28108210/comparison-of-various-types-of-collagenous-scaffolds-applied-for-embryonic-nerve-cell-culture
#1
Jacek Drobnik, Krystyna Pietrucha, Marcin Kudzin, Krystyna Mader, Jacek Szymański, Alicja Szczepanowska
The purpose of the study was to confirm whether collagen-based scaffolds using different cross-linking methods are suitable elaborate environments for embryonic nerve cell culture. Three 3D sponge-shaped porous scaffolds were composed using collagen alone, collagen with chondroitin sulphate modified by 1-ethyl-3-(3-dimethyl aminopropyl) carbodiimide hydrochloride, and collagen cross-linked by 2,3-dialdehyde cellulose (DAC). Embryonic nerve cells from rats were applied to the scaffolds and stained with bisbenzimide to study cell entrapment within the scaffolds...
January 17, 2017: Biologicals: Journal of the International Association of Biological Standardization
https://www.readbyqxmd.com/read/28075090/carpal-tunnel-syndrome-diagnosis-and-management
#2
Jennifer Wipperman, Kyle Goerl
Carpal tunnel syndrome, the most common entrapment neuropathy of the upper extremity, is caused by compression of the median nerve as it travels through the carpal tunnel. Classically, patients with the condition experience pain and paresthesias in the distribution of the median nerve, which includes the palmar aspect of the thumb, index and middle fingers, and radial half of the ring finger. Additional clues include positive physical examination findings, such as the flick sign, Phalen maneuver, and median nerve compression test...
December 15, 2016: American Family Physician
https://www.readbyqxmd.com/read/28072805/anatomical-variants-of-the-pudendal-nerve-observed-during-a-transgluteal-surgical-approach-in-a-population-of-patients-with-pudendal-neuralgia
#3
Stephane Ploteau, Marie-Aimee Perrouin-Verbe, Jean-Jacques Labat, Thibault Riant, Amelie Levesque, Roger Robert
BACKGROUND: Several studies have described the course and anatomical relations of the pudendal nerve. Several surgical nerve decompression techniques have been described, but only the transgluteal approach has been validated by a prospective randomized clinical trial. The purpose of this study was to describe the course of the nerve and its variants in a population of patients with pudendal neuralgia in order to guide the surgeon in the choice of surgical approach for pudendal nerve decompression...
January 2017: Pain Physician
https://www.readbyqxmd.com/read/28066745/deep-gluteal-space-problems-piriformis-syndrome-ischiofemoral-impingement-and-sciatic-nerve-release
#4
Luis Perez Carro, Moises Fernandez Hernando, Luis Cerezal, Ivan Saenz Navarro, Ana Alfonso Fernandez, Alexander Ortiz Castillo
BACKGROUND: Deep gluteal syndrome (DGS) is an underdiagnosed entity characterized by pain and/or dysesthesias in the buttock area, hip or posterior thigh and/or radicular pain due to a non-discogenic sciatic nerve entrapment in the subgluteal space. Multiple pathologies have been incorporated in this all-included "piriformis syndrome", a term that has nothing to do with the presence of fibrous bands, obturator internus/gemellus syndrome, quadratus femoris/ischiofemoral pathology, hamstring conditions, gluteal disorders and orthopedic causes...
July 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28065869/predictors-of-radial-nerve-palsy-recovery-in-humeral-shaft-fractures-a-retrospective-review-of-17-patients
#5
Nadine Nachef, VarenkaBariatinsky, Steeve Sulimovic, Christian Fontaine, Christophe Chantelot
BACKGROUND: Radial nerve injury is common in humeral shaft fractures and fails to recover spontaneously in 30% of cases. Few studies have evaluated predictors of recovery.The objectives of this study were to identify predictors of radial nerve palsy recovery and to assess the usefulness of surgical radial nerve exploration in patients with pre-operative radial nerve palsy. HYPOTHESIS: Factors predicting the outcome of radial nerve palsy can be identified. METHODS: Of 373 patients with humeral shaft fractures between 2005 and 2012, 43 had radial nerve palsy, including 23 who were lost to follow-up and 17 who were evaluated retrospectively at a mean of 26 months (range, 12-84 months) after internal fixation...
January 5, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28059947/sensitivity-of-computed-tomography-compared-with-that-of-magnetic-resonance-myelography-in-the-presurgical-diagnosis-of-foraminal-or-extraforaminal-entrapment-at-the-lumbosacral-junction
#6
Sung Ho Lee, Sang-Ho Lee, Soo-Beom Kim, Eun Soo Park, Soo-Nyung Kim, Ki-Hyoung Moon
STUDY DESIGN: This is a retrospective analysis. OBJECTIVE: To investigate and compare the sensitivities of computed tomography (CT) and magnetic resonance myelography (MRM) in the presurgical diagnosis of foraminal or extraforaminal entrapment of the L5 nerve. SUMMARY OF BACKGROUND DATA: CT is more clinically available than MRM. Foraminal or extraforaminal entrapment at the lumbosacral junction may cause L5 radiculopathy but is difficult to diagnose...
January 4, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28050946/diagnosing-carpal-tunnel-syndrome-with-doppler-ultrasonography-a-comparison-of-ultrasonographic-measurements-and-electrophysiological-severity
#7
Nihal Kutlar, Ayse Oytun Bayrak, İlkay Koray Bayrak, Sevgi Canbaz, Hande Türker
INTRODUCTION: Carpal tunnel syndrome (CTS) is the most common entrapment neuropathy. Diagnosis is based on clinical history, physical examination, and electrophysiological studies. Imaging techniques are performed for difficult-to-diagnose cases because they provide information about the morphology of the median nerve. More recently, it has been shown that Doppler ultrasonography can detect increased intraneural blood flow in CTS. The aim of our study is to evaluate the relationship between the severity of CTS, hypervascularization, and cross-sectional area (CSA) to determine the diagnostic value of Doppler ultrasonography...
February 2017: Neurological Research
https://www.readbyqxmd.com/read/28050354/a-case-report-on-unilateral-accessory-humeral-head-of-pronator-teres
#8
Suman Verma, Sulochana Sakthivel
The presence of an accessory muscle in the forearm is likely to compress on the neurovascular structures and has clinical implications. We encountered an accessory humeral head of pronator teres during routine dissection of left upper limb in a male cadaver. The accessory head had fleshy origin from medial supracondylar line, medial intermuscular septum and brachialis fascia. It coursed downwards in the cubital region covering brachial artery and median nerve. Further, it narrowed becoming mostly tendinous and joined with the humeral head of pronator teres...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28038479/acute-improvement-in-intraoperative-emg-following-common-fibular-nerve-decompression-in-patients-with-symptomatic-diabetic-sensorimotor-peripheral-neuropathy-1-emg-results
#9
James C Anderson, D Scott Nickerson, Brian L Tracy, Roger J Paxton, Dwayne S Yamasaki
Background and Study Aims Electromyographic (EMG) recordings of the fibularis longus (FL) and tibialis anterior (TA) muscles were performed intraoperatively during common fibular nerve (CFN) nerve decompression (ND) in patients with symptomatic diabetic sensorimotor peripheral neuropathy (DSPN) and clinical nerve compression. Materials and Methods Forty-six legs in 40 patients underwent surgical ND by external neurolysis; FL and TA muscles were monitored intraoperatively. Evoked EMGs were recorded just prior to and within 1 minute after ND...
December 30, 2016: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/28035645/reflex-arc-of-the-teeth-clenching-induced-pressor-response-in-rats
#10
Ichiro Shoji, Takehito Kemuriyama, Megumi Tandai-Hiruma, Satoshi Maruyama, Akimasa Tashiro, Hidetaka Yokoe, Yasuhiro Nishida
Although "teeth clenching" induces pressor response, the reflex tracts of the response are unknown. In this study, dantrolene administration inhibited teeth clenching generated by electrical stimulation of the masseter muscles and completely abolished the pressor response. In addition, trigeminal ganglion block or hexamethonium administration completely abolished the pressor response. Local anesthesia of molar regions significantly reduced the pressor response to 27 ± 10%. Gadolinium (mechanoreceptor blocker of group III muscle afferents) entrapment in masticatory muscles also significantly reduced the pressor response to 62 ± 7%...
December 29, 2016: Journal of Physiological Sciences: JPS
https://www.readbyqxmd.com/read/28000493/accessory-coracobrachialis-muscle-with-two-bellies-and-abnormal-insertion-case-report
#11
George Paraskevas, Konstantinos Koutsouflianiotis, Kalliopi Iliou, Theodosis Bitsis, Panagiotis Kitsoulis
OBJECTIVE: In the current study a brief review is presented of the coracobrachialis muscle's morphological variability, action, embryological development and clinical significance. CASE REPORT: We report a case of a left-sided coracobrachialis muscle consisting of two bellies. The deep belly inserts into the usual site in the middle area of the anteromedial aspect of the left humerus, whereas the superficial belly inserts through a muscular slip into the brachial fascia and the medial intermuscular septum, forming a musculo-aponeurotic tunnel in the middle region of the left arm, for the passage of the median nerve, brachial artery and veins, medial antebrachial cutaneous nerve and ulnar nerve...
November 2016: Acta Medica Academica
https://www.readbyqxmd.com/read/27989968/superior-cluneal-nerve-entrapment-neuropathy-and-gluteus-medius-muscle-pain-their-effect-on-very-old-patients-with-low-back-pain
#12
Rinko Kokubo, Kyongsong Kim, Toyohiko Isu, Daijiro Morimoto, Naotaka Iwamoto, Shiro Kobayashi, Akio Morita
OBJECTIVE: In the very elderly, their general condition and poor compliance with drug regimens can render the treatment of low back pain (LBP) difficult. We report the effectiveness of a less invasive treatment for intractable LBP from superior cluneal nerve entrapment neuropathy (SCN-EN) and gluteus medius muscle (GMeM) pain. PATIENTS AND METHODS: Between April 2013 and March 2015, we treated 17 consecutive elders with LBP and buttock- and leg pain (BuP, LP). They were 4 men and 13 women ranging in age from 85 to 91 years (mean 86...
October 27, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27987052/thoracic-outlet-syndrome-wide-literature-for-few-cases-status-of-the-art
#13
REVIEW
Pietro Emiliano Doneddu, Daniele Coraci, Paola De Franco, Ilaria Paolasso, Pietro Caliandro, Luca Padua
Despite its low prevalence and incidence, considerable debate exists in the literature on thoracic outlet syndrome (TOS). From literature analysis on nerve entrapments, we realized that TOS is the second most commonly published entrapment syndrome in the literature (after carpal tunnel syndrome) and that it is even more reported than ulnar neuropathy at elbow, which, instead, is very frequent. Despite the large amount of articles, there is still controversy regarding its classification, clinical picture, diagnostic objective findings, diagnostic modalities, therapeutical strategies and outcomes...
December 16, 2016: Neurological Sciences
https://www.readbyqxmd.com/read/27977444/outcome-of-decompression-alone-for-foraminal-extraforaminal-entrapment-of-l5-nerve-root-through-wiltse-paraspinal-approach
#14
Kyung-Chul Choi, Jin-Sung Kim, Dong Chan Lee, Choon-Keun Park
STUDY DESIGN: Retrospective analysis. OBJECTIVE OF THE STUDY: The objective of the study was to present the surgical outcome and analyze the prognostic factors for postoperative leg pain after posterior decompression alone for foraminal/extraforaminal L5 entrapment at L5-S1 segment (LSS). SUMMARY OF BACKGROUND DATA: Disk extrusion, hypertrophy of facet joint, osteophyte of vertebral body, thickened lumbosacral ligament, and collapsed disk lead to form the lumbosacral tunnel which compresses the L5 exiting nerve root...
December 13, 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27975037/abdominal-wall-reconstruction-using-retrorectus-self-adhering-mesh-a-novel-approach
#15
Ibrahim Khansa, Jeffrey E Janis
BACKGROUND: In abdominal wall reconstruction, the retrorectus plane offers an ideal location for mesh placement. Mesh fixation in this plane is often achieved using transfascial sutures, which risks entrapping intercostal nerves and causing significant pain, and takes time to place. A novel alternative is the use of sutureless self-adhering mesh. Although the use of this mesh in inguinal hernias has been well described, studies on its use in abdominal wall reconstruction are lacking. METHODS: Consecutive patients who underwent ventral hernia repair with retrorectus mesh were reviewed...
November 2016: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/27935076/electrophysiologically-identified-piriformis-syndrome-is-successfully-treated-with-incobotulinum-toxin-a-and-physical-therapy
#16
Loren M Fishman, Allen N Wilkins, Bernard Rosner
INTRODUCTION: Piriformis syndrome is entrapment of the sciatic nerve by the piriformis muscle. METHODS: 56-person randomized, double-blinded, controlled study involving physical therapy and incobotulinum toxin A or placebo. INCLUSION CRITERIA: 3 standard deviation delay of posterior tibial (PT) or fibular FN) H-reflexes in flexion, adduction and internal rotation (FAIR-test), and normal paraspinal EMG. OUTCOME MEASURES: adverse side-effects, visual analogue scale (VAS), H-reflex delay in FAIR-test...
December 9, 2016: Muscle & Nerve
https://www.readbyqxmd.com/read/27915068/effects-of-pulsed-ultrasound-therapy-on-sensory-nerve-conduction-parameters-and-the-pain-threshold-perceptions-in-humans
#17
Othmar Schuhfried, Damir Vukanovic, Christian Kollmann, Karin Pieber, Tatjana Paternostro-Sluga
BACKGROUND: Therapeutic ultrasound is an often-used clinical modality in the nonsurgical treatment of entrapment neuropathies. To date, the possible mechanism of action of pulsed ultrasound therapy on the peripheral nerve in the treatment of entrapment neuropathies is unclear. OBJECTIVE: To examine the effects of pulsed ultrasound therapy on peripheral nerve conduction parameters. DESIGN: A prospective, randomized, single blind, crossover study...
November 30, 2016: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/27906945/ganglion-cyst-at-the-proximal-tibiofibular-joint-in-a-patient-with-painless-foot-drop
#18
Abdulmuhsen Alsahhaf, Waleed Renno
Entrapment neuropathies of the fibular nerve and its branches are often underdiagnosed due to the lack of reliable diagnosis using clinical examination and electrophysiologic evaluation. Most fibular nerve compressions may be classified into 2 broad categories: (a) mechanical causes, which occur at fibrous or fibro-osseous tunnels, and (b) dynamic causes related to nerve injury during specific limb positioning. Foot drop resulting from weakness of the dorsiflexor muscles of the foot is a relatively uncommon presentation and closely related to L5 neuropathy caused by a disc herniation...
November 2016: Pain Physician
https://www.readbyqxmd.com/read/27904865/giant-true-brachial-artery-aneurysm-after-hemodialysis-fistula-closure-in-a-renal-transplant-patient
#19
Doriana Ferrara, Michele Di Filippo, Flavia Spalla, Anna Maria Giribono, Emanuela Viviani, Annamaria Santagata, Umberto Bracale, Michele Santangelo, Luca Del Guercio, Umberto Marcello Bracale
The usual manifestation of brachial artery aneurysms is the incidental finding of a swelling of the arm, combined with paresthesia or pain in some cases. The etiology is often traumatic or secondary to drug abuse. Pathophysiology of brachial artery dilation in these cases is not completely clear. We herein describe a case of a 61-year-old male presenting with a giant, painful, pulsatile mass on his left arm. He was submitted to a cadaveric kidney transplant in 2005. He had a functioning arteriovenous fistula (AVF) on his right arm, and a spontaneously thrombosed radiocephalic AVF on his left arm...
September 2016: Case Reports in Nephrology and Dialysis
https://www.readbyqxmd.com/read/27902538/ulnar-tunnel-syndrome-radial-tunnel-syndrome-anterior-interosseous-nerve-syndrome-and-pronator-syndrome
#20
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...
January 2017: Journal of the American Academy of Orthopaedic Surgeons
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