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https://www.readbyqxmd.com/read/29166638/predictors-of-surgical-outcomes-of-traumatic-peripheral-nerve-injuries-in-children-an-institutional-experience
#1
Bhagavatula Indira Devi, Subhas K Konar, Dhananjaya I Bhat, Dhaval P Shukla, R Bharath, M S Gopalakrishnan
AIM: This study was undertaken to address the epidemiological characteristics, operative details, and surgical outcome of peripheral nerve injuries in children treated in a tertiary hospital in India (NIMHANS, Bangalore). MATERIALS AND METHODS: This is a retrospective study of epidemiology, operative findings, and surgical outcomes over the period of 2000-2016. Our series includes 102 children with peripheral nerve injuries of various causes. RESULTS: Intramuscular injections were the most common cause (52...
November 23, 2017: Pediatric Neurosurgery
https://www.readbyqxmd.com/read/29159462/-ulnar-collateral-ligament-reconstruction-of-the-elbow-in-posttraumatic-and-chronic-ligament-instability
#2
REVIEW
M Beck, A Wichelhaus, T Mittlmeier
OBJECTIVE: Restoration of ulnar elbow stability in cases of posttraumatic and chronic ulnar ligament instability. INDICATIONS: Symptomatic therapy-resistant ulnar ligament instability of the elbow. CONTRAINDICATIONS: Arthrofibrosis and high-grade elbow arthrosis. SURGICAL TECHNIQUE: Anatomical reconstruction of the ulnar collateral ligament (UCL) with autologous tendon graft (tendons of the palmaris longus muscle and gracilis muscle) in implant-free docking technique...
November 20, 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/29157770/the-prevention-and-recognition-of-ulnar-nerve-and-brachial-plexus-injuries
#3
Barbara J Duffy, Tito D Tubog
Perioperative peripheral nerve injury is a serious yet preventable perioperative complication. Since the inception of the American Association of Anesthesiologists Closed Claim Project, the incidence of peripheral nerve injury has remained constant with an overall reported prevalence rate of 15% to 16%. To date, the most frequent nerve injuries are ulnar nerve neuropathy and brachial plexus injury. This article will review the clinical presentation, pathophysiology, causative and risks factors, and preventive measures for the two most common nerve injuries...
December 2017: Journal of Perianesthesia Nursing: Official Journal of the American Society of PeriAnesthesia Nurses
https://www.readbyqxmd.com/read/29156496/sensation-mechanoreceptor-and-nerve-fiber-function-after-nerve-regeneration
#4
Christian Krarup, Birgitta Rosén, Michel Boeckstyns, Allan Ibsen Sørensen, Göran Lundborg, Mihai Moldovan, Simon J Archibald
OBJECTIVE: Sensation is essential for recovery after peripheral nerve injury. However, the relationship between sensory modalities and function of regenerated fibers is uncertain. We have investigated the relationships between touch threshold, tactile gnosis and mechanoreceptor and sensory fiber function after nerve regeneration. METHODS: Twenty-one median or ulnar nerve lesions were repaired by a collagen nerve conduit or direct suture. Quantitative sensory hand function and sensory conduction studies by near-nerve technique including tactile stimulation of mechanoreceptors were followed for 2 years, and results were compared to non-injured hands...
November 20, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/29150079/mechanism-hypotheses-for-the-electrophysiological-manifestations-of-two-cases-of-endplate-acetylcholinesterase-deficiency-related-congenital-myasthenic-syndrome
#5
Qingyun Ding, Dongchao Shen, Yi Dai, Youfang Hu, Yuzhou Guan, Mingsheng Liu, Liying Cui
OBJECTIVE: To summarize the electrophysiological characteristics of two cases of endplate acetylcholinesterase deficiency (EAD) related congenital myasthenic syndrome (CMS) caused by COLQ mutation and to discuss the possible mechanism of these electrophysiological phenomena. METHODS: Electrophysiological examinations were conducted including nerve conduction studies, routine electromyography (EMG), repetitive nerve stimulation (RNS) and single fiber EMG (SFEMG)...
November 14, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29132790/ulnar-thumb-pulp-reconstruction-using-the-anterograde-homodigital-neurovascular-island-flap
#6
REVIEW
Valeriy Shubinets, River M Elliott
The thumb ulnar pulp is a critical component of key pinch and precision manipulation. Injuries to this area should be reconstructed with robust, sensate tissue that restores bulk and contour. The existing reconstructive options, however, have substantial risks and drawbacks. We describe an anterograde homodigital neurovascular island flap that provides both sensate and durable coverage of the ulnar thumb pulp. The flap uses innervated glabrous tissue, limits donor site morbidity to the thumb and first web space, and does not require microvascular anastomoses or nerve coaptation...
November 11, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29131277/communications-of-the-median-nerve-in-fetuses
#7
Alev Bobuş Kara, Özlem Elvan, Nail Can Öztürk, Ahmet Hakan Öztürk
BACKGROUND: Communications between the median, ulnar and musculocutaneous nerves in the arm, forearm and hand were reported in adult cadaveric and electrophysiological studies. These communicant branches may lead conflicting clinical and electrodiagnostic outcomes. While there are many studies on adult patients or cadavers, there is poor regarding fetuses. The present study was conducted to examine the frequencies of these communications and their coexistences in human fetuses. MATERIALS AND METHODS: Anterior aspect of the forearms of 50 fetuses (29 females, 20 males, and 1 unknown) were dissected bilaterally (totally 100 sides) for this purpose...
November 13, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/29130658/-vein-nerve-conduit-supported-by-vascular-stent-in-the-regeneration-of-peripheral-nerve-in-rabbits
#8
Wei-Kun Meng, Zhong Huang, Zhen Tan, Liang Li, Qiang Guo, Zhen Zhang, Cheng-Xi Wu, Lei Liu, Fu-Guo Huang, Guang-Lin Wang
OBJECTIVE: To evaluate the effectiveness of autologous vein nerve conduit supported by vascular stent in repairing a 10 mm gap peroneal nerve in white New Zealand rabbits. METHODS: 30 New Zealand rabbits were randomly divided into three groups: autologous nerve group (group A),conventional autologous vein nerve conduit group (group B),autologous vein nerve conduit supported by vascular stent group (group C). 10 mm common peroneal nerve was cut off. In groups A,the peroneal nerve was turned 180 ° before suturing...
September 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/29130498/peripheral-nerve-ultrasound-in-friedreich-s-ataxia
#9
Eoin Mulroy, Luciana Pelosi, Ruth Leadbetter, Purwa Joshi, Miriam Rodrigues, Stuart Mossman, Dean Kilfoyle, Richard Roxburgh
Introduction Sensory impairment in Friedreich's ataxia (FRDA) is generally accepted as being due to a ganglionopathy. The degree of contribution from axonal pathology remains a matter of debate. Nerve ultrasound may be able to differentiate these processes. Methods The ultrasound cross-sectional area of median, ulnar, tibial and sural nerves of 8 patients with FRDA was compared with 8 age- and gender-matched healthy controls and with reference values in our population. Results The nerves of the patients with FRDA were significantly larger than healthy controls' at all upper limb sites (p< 0...
November 11, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/29124342/connections-between-radial-and-ulnar-nerve-at-high-humeral-level-in-cadavers-incidence-topography-and-literature-review
#10
Konstantinos Natsis, A Giannakopoulou, M Piagkou, N Lazaridis, T Tegos, M R Colonna
PURPOSE: Although communications between branches and cords of the brachial plexus have been extensively published, there is a scarcity of reports concerning radial and ulnar nerve (RN-UN) communication in the arm. The current study aims to demonstrate the incidence, topography, and length of communicating branches between RN and UN. Any additional coexisted variations were also recorded. MATERIALS AND METHODS: Two hundred and sixty-six upper limbs collected from one hundred and thirty-three (81 males and 52 females) Greek cadavers were dissected...
November 9, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29122426/anatomical-factors-contributing-to-radial-nerve-excursion-at-the-brachium-a-cadaveric-study
#11
Wayne A Chen, T David Luo, Michael D Wigton, Zhongyu Li
PURPOSE: The radial nerve appears to be more vulnerable to injury in the brachium than the median and ulnar nerves. The underlying mechanism for this increased vulnerability is not well explained. We hypothesize that the radial nerve has less excursion than the median and ulnar nerves because it is anatomically tethered by the lateral intermuscular septum (LIS) and that elbow positioning and LIS release will improve its excursion. METHODS: Eight paired fresh-frozen cadaveric upper extremity specimens were used...
November 7, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29117836/compressive-ulnar-neuropathy-caused-by-olecranon-bursitis-and-concomitant-epidermal-cyst-a-case-report
#12
Hiroshi Yamazaki, Michitaka Shinone, Hiroyuki Kato
Epidermal cyst is a dermal or subcutaneous epithelial cyst that contains keratin and is lined by true epidermis. Although extremely rare, it can cause pathology including nerve compression syndrome. We report a rare case of ulnar nerve compression in the elbow that was caused by olecranon bursitis and concomitant epidermal cyst in a 67-year-old man. The ulnar nerve was immediately adjacent to the olecranon bursa and was significantly compressed. There was no connection between the tumor and the ulnar nerve...
December 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/29117824/ancient-schwannoma-of-radial-nerve-a-report-of-two-cases
#13
Anil K Bhat, Ashwath M Acharya, Jayakrishnan K Narayanakurup, Vijay Shankar
Ancient schwannoma is a rare variant of schwannoma associated with a longstanding course. They differ from classical schwannomas in the long duration for this subtype of schwannoma to develop and also by demonstrating haemorrhagic and degenerative changes with nuclear atypia. It is because of these histologic hallmarks that they are frequently misdiagnosed as malignant tumours. They usually involve the major nerves of flexor surfaces in upper extremity such as the ulnar and median nerve but schwannomas of the radial nerve are a rare entity...
December 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/29114414/comparison-between-the-two-injection-technique-and-the-four-injection-technique-in-axillary-brachial-plexus-block-with-articaine
#14
Aysun Ertikin, Güldeniz Argun, Mesut Mısırlıoğlu, Murat Aydın, Murat Arıkan, Nihal Kadıoğulları
Objective: In this study, we aimed to compare axillary brachial plexus block using the two-injection and four-injection techniques assisted with ultrasonography (USG) and nerve stimulator in patients operated for carpal tunnel syndrome with articaine. To evaluate which technique is more effective, we compared the onset time, effectiveness, and duration of block procedures, patient satisfaction, adverse effect of the drug, and complication rates of the motor and sensory blocks. Methods: Sixty patients were randomly divided into two groups...
October 2017: Turkish Journal of Anaesthesiology and Reanimation
https://www.readbyqxmd.com/read/29095059/tendon-transfer-surgery-focus-on%C3%A2
#15
Roberto Cuomo, Luca Grimaldi, Giuseppe Nisi, Cesare Brandi, Carlo D'Aniello
Median and Ulnar nerve palsy is a devastating condition that compromise hand function. A procedure of tendon transfer may be helpful to restore the movements by linking palsy muscles to other muscles able to contract. Scientific discoveries and technological innovations have profoundly changed this kind of surgery; studies on sarcomeres, for example, changed the concept of tensioning. To date we know that muscle strength and its contraction capacity depends on many factors (not only tensioning) such as sarcomeres length, cellular cytoskeleton and extracellular matrix composition: all of these factors interact together and in a ways not still fully understood, determining the complex concept of "movement...
November 2, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/29094390/reconstruction-of-a-long-defect-of-the-ulnar-artery-and-nerve-with-an-arterialized-neurovenous-free-flap-in-a-teenager-a-case-report-and-literature-review
#16
Diogo Casal, Diogo Pais, Eduarda Mota-Silva, Giovanni Pelliccia, Inês Iria, Paula A Videira, Maria Manuel Mendes, João Goyri-O'Neill, Maria Manuel Mouzinho
There is evidence that nerve flaps are superior to nerve grafts for bridging long nerve defects. Moreover, arterialized neurovenous flaps (ANVFs) have multiple potential advantages over traditional nerve flaps in this context. This paper describes a case of reconstruction of a long defect of the ulnar artery and nerve with an arterialized neurovenous free flap and presents a literature review on this subject. A 16-year-old boy sustained a stab wound injury to the medial aspect of the distal third of his right forearm...
November 2, 2017: Microsurgery
https://www.readbyqxmd.com/read/29091318/early-electrophysiological-findings-in-acute-inflammatory-demyelinating-polyradiculoneuropathy-variant-of-guillain-barre-syndrome-in-the-pakistani-population-a-comparison-with-global-data
#17
Ahmed Wali, Sara Khan
Acute inflammatory demyelinating polyradiculoneuropathy (AIDP) and acute motor axonal neuropathy (AMAN) are the most common variants of Guillian Barre syndrome documented in the Asian population. However the variability of early neurophysiologic findings in the Asian population compared to western data has not been documented. Eighty seven cases of AIDP were retrospectively reviewed for their demographic, clinical, electrophysiological and laboratory data. Mean age of subjects was 31 ± 8 years with males more commonly affected...
November 1, 2017: Journal of the Peripheral Nervous System: JPNS
https://www.readbyqxmd.com/read/29081130/-change-in-peripheral-nervous-conduction-velocity-in-patients-with-occupational-chronic-mercury-poisoning-and-related-influencing-factors
#18
L Li, B Jiang, J Lai, W R Dai, X Li, W F Liu, Z X Yang, L Xie
Objective: To investigate the change in peripheral nervous conduction velocity in patients with occupational chronic mercury poisoning and related influencing factors. Methods: From February 2011 to December 2014, urinary mercury examination and neural electromyography were performed for 104 patients with occupational chronic mercury poisoning. The data on age, type of work, working years of mercury exposure, and past medical history were collected, and peripheral nervous conduction velocity and its correlation with age, working years of mercury exposure, and urinary mercury concentration were analyzed...
August 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/29075520/the-feasibility-of-using-high-resolution-ultrasonography-to-assess-ulnar-nerve-in-patients-with-diabetes-mellitus
#19
Jun Chen, Chun-Lei Wang, Shan Wu, Shan He, Jun Ren
OBJECTIVE: The aim of this study was to investigate the usefulness of high-resolution ultrasonography for the diagnosis of polyneuropathy in diabetes mellitus patients by the examination of the ulnar nerves. METHOD: We recruited 100 healthy age-matched volunteers (50 women and 50 men) with 200 arms without diabetes or cubital tunnel syndrome as the control group. We assessed the upper limbs of 100 diabetes mellitus patients (45 women and 55 men), 40 of whom had electrophysiologically confirmed diabetic peripheral neuropathy and 60 had no diabetic peripheral neuropathy in the upper limbs...
September 2017: Journal of Ultrasonography
https://www.readbyqxmd.com/read/29064955/modulation-of-short-latency-afferent-inhibition-and-short-interval-intracortical-inhibition-by-test-stimulus-intensity-and-motor-evoked-potential-amplitude
#20
Shota Miyaguchi, Sho Kojima, Ryoki Sasaki, Hiroyuki Tamaki, Hideaki Onishi
The present study aimed to investigate the effects of changes in motor-evoked potential (MEP) amplitude on short-latency afferent inhibition (SAI) and short-interval intracortical inhibition (SICI). MEPs in response to transcranial magnetic stimulation (TMS) of the left primary motor cortex were measured from the right first dorsal interosseous muscle of 10 healthy participants. SAI was evaluated by measuring MEPs in response to variable-intensity test TMS pulses delivered 22 ms following electrical stimulation of the right ulnar nerve (intensity fixed at the motor threshold)...
December 13, 2017: Neuroreport
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