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Nerve entrapment upper limb

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https://www.readbyqxmd.com/read/29137727/the-quantitative-evaluation-of-the-relationship-between-the-forces-applied-to-the-palm-and-carpal-tunnel-pressure
#1
Kazutoshi Kubo, Yu-Shiuan Cheng, Boran Zhou, Kai-Nan An, Steven L Moran, Peter C Amadio, Xiaoming Zhang, Chunfeng Zhao
Carpal tunnel syndrome (CTS) is the most common entrapment neuropathy occurring in upper limbs. The etiology, however, has not been fully understood yet. Median nerve could be compressed by either increase of carpal tunnel pressure (CTP) or direct impingement when it is forced toward to carpal ligament especially in wrist flexion leading to CTS development. Thus, the increase of carpal tunnel pressure is considered an important role in CTS development. It has been identified that forces applied to the palm would affect the CTP...
November 4, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29136549/the-spectrum-of-charcot-marie-tooth-disease-due-to-myelin-protein-zero-an-electrodiagnostic-nerve-ultrasound-and-histological-study
#2
Gian Maria Fabrizi, Stefano Tamburin, Tiziana Cavallaro, Ilaria Cabrini, Moreno Ferrarini, Federica Taioli, Francesca Magrinelli, Giampietro Zanette
OBJECTIVE: Nerve ultrasound (US) data on myelin protein zero (MPZ)-related Charcot-Marie-Tooth disease (CMT) are lacking. To offer a comprehensive perspective on MPZ-related CMTs, we combined nerve US with clinics, electrodiagnosis and histopathology. METHODS: We recruited 36 patients (12 MPZ mutations), and correlated nerve US to clinical, electrodiagnostic measures, and sural nerve biopsy. RESULTS: According to motor nerve conduction velocity (MNCV) criteria, nine patients were categorized as "demyelinating" CMT1B, 17 as "axonal" CMT2I/J, and 10 as dominant "intermediate" CMTDID...
October 20, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28839321/late-onset-hirayama-disease-presenting-with-ulnar-neuropathy-a-case-report
#3
Meral Bilgilisoy Filiz, Tuncay Cakir, Naciye Fusun Toraman, Sebnem Koldas DoGan, Iclal Erdem Toslak, Hilmi Uysal
Hirayama disease (HD) was first reported by Hirayama et al. in 1959. The disease is considered as a type of benign focal motor neuron disease that primarily affects upper limbs of young males. In this case report, we present a man aged 40-years with rapidly progressive weakness and atrophy in his left hand. The findings of nerve conduction studies were consistent with left ulnar neuropathy at the elbow. Flexion magnetic resonance imaging (MRI) revealed minimal enlargement of the posterior epidural space and anterior displacement of the spinal cord...
August 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28802056/different-nerve-ultrasound-patterns-in-charcot-marie-tooth-types-and-hereditary-neuropathy-with-liability-to-pressure-palsies
#4
Luca Padua, Daniele Coraci, Marta Lucchetta, Ilaria Paolasso, Costanza Pazzaglia, Giuseppe Granata, Mario Cacciavillani, Marco Luigetti, Fiore Manganelli, Chiara Pisciotta, Giuseppe Piscosquito, Davide Pareyson, Chiara Briani
INTRODUCTION: Nerve ultrasound in Charcot-Marie-Tooth (CMT) disease has focused mostly on the upper limbs. We performed an evaluation of a large cohort of CMT patients in which we sonographically characterized nerve abnormalities in different disease types, ages, and nerves. METHODS: Seventy patients affected by different CMT types and hereditary neuropathy with liability to pressure palsies (HNPP) were evaluated, assessing median, ulnar, fibular, tibial, and sural nerves bilaterally...
August 12, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28571125/preinguinal-splitting-and-reunion-of-femoral-nerve-entrapping-the-fleshy-fibres-of-iliacus-muscle-a-case-report
#5
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/28409134/anatomical-variations-of-pronator-teres-muscle-predispositional-role-for-nerve-entrapment
#6
Edie Benedito Caetano, Luiz Ângelo Vieira, Fábio Antonio Anversa Sprovieri, Guilherme Camargo Petta, Maurício Tadeu Nakasone, Bárbara Lívia Correa Serafim
OBJECTIVE: To assess the anatomical variations of the pronator teres muscle (PTM) and its implication in the compression of the median nerve, which passes through the humeral and ulnar heads of the PTM. METHODS: For the present study, 100 upper limbs from human cadavers from the anatomy laboratory were dissected. Forty-six specimens were male and four, female, whose aged ranged from 28 to 77 years; 27 were white and 23, non-white. A pilot study consisting of six hands from three fresh cadaver dissections was conducted to familiarize the authors with the local anatomy; these were not included in the present study...
March 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28226286/peripheral-nerve-ultrasonography-in-patients-with-transthyretin-amyloidosis
#7
Simon Podnar, Stayko Sarafov, Ivailo Tournev, Gregor Omejec, Janez Zidar
OBJECTIVE: To systematically study peripheral nerve morphology in patients with transthyretin (TTR) amyloidosis and TTR gene mutation carriers using high-resolution ultrasonography (US). METHODS: In this prospective cross-sectional study we took a structured history, performed neurological examination, and measured peripheral nerve cross-sectional areas (CSAs) bilaterally at 28 standard locations using US. Demographic and US findings were compared to controls. RESULTS: Peripheral nerve CSAs were significantly larger in 33 patients with familial amyloid polyneuropathy (FAP) compared to 50 controls, most dramatically at the common entrapment sites (median nerve at the wrist, ulnar nerve at the elbow), and in the proximal nerve segments (median nerve in the upper arm, sciatic nerve in the thigh)...
April 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28217661/winged-scapula-caused-by-rhomboid-paralysis-a-case-report
#8
Maria Grazia Benedetti, Alessandro Zati, Silvia Bonfiglioli Stagni, Isabella Fusaro, Roberta Monesi, Roberto Rotini
Scapular winging secondary to dorsal scapular nerve (DSN) damage is an underestimated condition. It is often caused by entrapment of the nerve due to a hypertrophic middle scalene muscle, or by stretching of the DSN during traumatic movements. The condition has also been attributed to myofascial pain syndrome of the rhomboids with entrapment of the DSN. The non-specific symptomatology reported by patients is often incorrectly diagnosed, and this can result in a high level of disability of the upper limb. A clinical case of misdiagnosed dorsal scapula entrapment is presented...
October 2016: Joints
https://www.readbyqxmd.com/read/28198531/superficial-brachial-artery-a-possible-cause-for-idiopathic-median-nerve-entrapment-neuropathy
#9
Pilani Nkomozepi, Nkosi Xhakaza, Elaine Swanepoel
Nerve entrapment syndromes occur because of anatomic constraints at specific locations in both upper and lower limbs. Anatomical locations prone to nerve entrapment syndromes include sites where a nerve courses through fibro-osseous or fibromuscular tunnels or penetrates a muscle. The median nerve (MN) can be entrapped by the ligament of Struthers; thickened biceps aponeurosis; between the superficial and deep heads of the pronator teres muscle and by a thickened proximal edge of flexor digitorum superficialis muscle...
February 15, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28050354/a-case-report-on-unilateral-accessory-humeral-head-of-pronator-teres
#10
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/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/27875620/a-reliable-technique-for-ultrasound-guided-perineural-injection-in-ulnar-neuropathy-at-the-elbow
#12
Ulrike M Hamscha, Ines Tinhofer, Stefan Heber, Wolfgang Grisold, Wolfgang J Weninger, Stefan Meng
INTRODUCTION: Ulnar neuropathy at the elbow (UNE) is a common peripheral compression neuropathy and, in most cases, occurs at 2 sites, the retroepicondylar groove or the cubital tunnel. With regard to a potential therapeutic approach with perineural corticosteroid injection, the aim of this study was to evaluate the distribution of injection fluid applied at a standard site. METHODS: We performed ultrasound-guided (US-guided) perineural injections to the ulnar nerve halfway between the olecranon and the medial epicondyle in 21 upper limbs from 11 non-embalmed cadavers...
August 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/27869243/personal-risk-factors-for-carpal-tunnel-syndrome-in-female-visual-display-unit-workers
#13
Matteo Riccò, Silvia Cattani, Carlo Signorelli
OBJECTIVES: Carpal tunnel syndrome (CTS) is the most common nerve entrapment syndrome, which since the beginning of the seventies has been linked to the keyboard and visual display unit (VDU). The objective of this study was to investigate the prevalence and personal factors associated with CTS in female VDU workers in Italy. MATERIAL AND METHODS: Participants in this study were female adult subjects, working ≥ 20 h/week (N = 631, mean age 38.14±7.81 years, mean working age 12...
November 18, 2016: International Journal of Occupational Medicine and Environmental Health
https://www.readbyqxmd.com/read/27740456/thoracic-outlet-syndromes-the-so-called-neurogenic-types
#14
J Laulan
Neurogenic thoracic outlet syndrome (TOS) is one of the most controversial pain syndromes of the upper limbs. The controversies revolve around both the diagnosis and treatment of the non-specific or subjective subtypes. Their diagnosis rests on a combination of history, suggestive symptoms and clinical examination. Proximal pain is primarily muscular in origin, while distal symptoms may be the result of intermittent nerve compression and/or myofascial pain syndrome. Stringent clinical criteria are required to confirm the diagnosis of subjective TOS...
June 2016: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/27660694/entrapment-neuropathies-in-diabetes-mellitus
#15
REVIEW
Eugenia Rota, Nicola Morelli
Neuropathy is a common complication of diabetes mellitus (DM) with a wide clinical spectrum that encompasses generalized to focal and multifocal forms. Entrapment neuropathies (EN), which are focal forms, are so frequent at any stage of the diabetic disease, that they may be considered a neurophysiological hallmark of peripheral nerve involvement in DM. Indeed, EN may be the earliest neurophysiological abnormalities in DM, particularly in the upper limbs, even in the absence of a generalized polyneuropathy, or it may be superimposed on a generalized diabetic neuropathy...
September 15, 2016: World Journal of Diabetes
https://www.readbyqxmd.com/read/27630881/the-relationship-between-nerve-conduction-study-and-clinical-grading-of-carpal-tunnel-syndrome
#16
Praveen Kumar Srikanteswara, Janardhan D Cheluvaiah, Jagadish B Agadi, Karthik Nagaraj
INTRODUCTION: Carpal Tunnel Syndrome (CTS) is the most common nerve entrapment. Subjective sensory symptoms are common place in patients with CTS, but sometimes they are not supported by objective findings in the neurological examination. Electrodiagnostic (EDx) studies are a valid and reliable means of confirming the diagnosis. The amplitudes along with the conduction velocities of the sensory nerve action potential and motor nerve action potential reflect the functional state of axons, and are useful parameters and complement the clinical grading in the assessment of severity of CTS...
July 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27449322/negative-neurodynamic-tests-do-not-exclude-neural-dysfunction-in-patients-with-entrapment-neuropathies
#17
Larissa T Baselgia, David L Bennett, Robert M Silbiger, Annina B Schmid
OBJECTIVE: To examine differences in somatosensory phenotypes of patients with positive and negative neurodynamic tests and compare these with healthy participants. DESIGN: Case-control study. SETTING: University department. PARTICIPANTS: Patients with electrodiagnostically confirmed carpal tunnel syndrome (CTS) (n=53) and people without CTS (n=26) participated in this study (N=79). Patients with CTS were subgrouped according to the results of the upper limb neurodynamic tests biasing the median nerve into patients with positive or negative neurodynamic tests...
March 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/27056870/-prospective-study-of-the-causes-of-limb-numbness-in-patients-with-diabetes
#18
Kyongsong Kim, Toyohiko Isu, Naoya Emoto, Rinko Kokubo, Daijiro Morimoto, Naotaka Iwamoto, Shiro Kobayashi, Akio Morita
PURPOSE: Many patients with diabetes mellitus (DM) experience numbness in the extremities. This DM neuropathy may be complicated by peripheral entrapment neuropathy. We prospectively investigated the cause(s) of limb numbness in DM patients. MATERIALS AND METHODS: We enrolled 23 patients with uni- or bilateral limb numbness who were treated in our DM clinic. They were 10 men and 13 women; their average age was 63 years. The average duration of their neurological symptoms was 28...
April 2016: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/27045647/-clinical-and-electrophysiological-characteristics-and-therapeutic-analysis-of-9-patients-with-lewis-sumner-syndrome
#19
Aping Sun, Yingshuang Zhang, Xiangyi Liu, Lu Chen, Qingli Sun, Shuo Zhang, Dongsheng Fan
OBJECTIVE: To investigate the clinical characteristics, electrophysiological findings and treatment response of Lewis-Sumner syndrome (LSS). METHODS: Data of nine patients with LSS, who were diagnosed and treated from May 2008 to August 2014 in Department of Neurology, Peking University Third Hospital, were analyzed retrospectively, including clinical features, electrophysiological studies, pathological characteristics, therapy and follow up. RESULTS: The nine cases included seven males and two females, with the average age being 29 years old (18-64 years old)...
March 22, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/26815187/-carpal-tunnel-syndrome-with-cervical-spondylotic-radiculopathy-a-clinical-and-electrophysiological-study
#20
Renbin Wang, Zunjing Liu, Wei Wang, Mingrui Dong, Shaojie Sun, Kun Mao, Jinsong Jiao, Li Yan
OBJECTIVE: To study the clinical and electrophysiological characteristics of carpal tunnel syndrome (CTS) with cervical spondylotic radiculopathy (CSR) and simple-CTS, and compare the effect of double crush with that of simple entrapment on a nerve and investigate the association between CTS and CSR. METHOD: From January 2011 to August 2014, clinical data from 96 patients with double crush syndrome (DCS, CTS with CSR) and 165 patients with simple-CTS were examined, and the electrophysiologic parameters of median nerve in patients with DCS were compared with that in patients with simple-CTS...
September 15, 2015: Zhonghua Yi Xue za Zhi [Chinese medical journal]
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