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Neurosurgical Focus

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https://www.readbyqxmd.com/read/28263664/abstracts-of-the-2017-aans-cns-joint-section-on-disorders-of-the-spine-and-peripheral-nerves-las-vegas-nevada-%C3%A2-march-8-11-2017
#1
(no author information available yet)
No abstract text is available yet for this article.
March 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28245733/targeted-fascicular-biopsy-of-the-brachial-plexus-rationale-and-operative-technique
#2
Pierre Laumonerie, Stepan Capek, Kimberly K Amrami, P James B Dyck, Robert J Spinner
OBJECTIVE Nerve biopsy is useful in the management of neuromuscular disorders and is commonly performed in distal, noncritical cutaneous nerves. In general, these procedures are diagnostic in only 20%-50%. In selected cases in which preoperative evaluation points toward a more localized process, targeted biopsy would likely improve diagnostic yield. The authors report their experience with targeted fascicular biopsy of the brachial plexus and provide a description of the operative technique. METHODS All cases of targeted biopsy of the brachial plexus biopsy performed between 2003 and 2015 were reviewed...
March 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28245732/cortical-plasticity-after-brachial-plexus-injury-and-repair-a-resting-state-functional-mri-study
#3
Dhananjaya I Bhat, B Indira Devi, Komal Bharti, Rajanikant Panda
OBJECTIVE The authors aimed to understand the alterations of brain resting-state networks (RSNs) in patients with pan-brachial plexus injury (BPI) before and after surgery, which might provide insight into cortical plasticity after peripheral nerve injury and regeneration. METHODS Thirty-five patients with left pan-BPI before surgery, 30 patients after surgery, and 25 healthy controls underwent resting-state functional MRI (rs-fMRI). The 30 postoperative patients were subdivided into 2 groups: 14 patients with improvement in muscle power and 16 patients with no improvement in muscle power after surgery...
March 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28245731/letter-to-the-editor-medical-facts-in-neurosurgical-history
#4
Marc Zanello, Johan Pallud
No abstract text is available yet for this article.
March 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28245730/peripheral-nervous-system-injury-after-high-dose-single-fraction-image-guided-stereotactic-radiosurgery-for-spine-tumors
#5
Michael D Stubblefield, Katarzyna Ibanez, Elyn R Riedel, Ori Barzilai, Ilya Laufer, Eric Lis, Yoshiya Yamada, Mark H Bilsky
OBJECTIVE The object of this study was to determine the percentage of high-dose (1800-2600 cGy) single-fraction stereotactic radiosurgery (SF-SRS) treatments to the spine that result in peripheral nervous system (PNS) injury. METHODS All patients treated with SF-SRS for primary or metastatic spine tumors between January 2004 and May 2013 and referred to the Rehabilitation Medicine Service for evaluation and treatment of neuromuscular, musculoskeletal, or functional impairments or pain were retrospectively identified...
March 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28245686/analyzing-cost-effectiveness-of-ulnar-and-median-nerve-transfers-to-regain-forearm-flexion
#6
Arvin R Wali, Charlie C Park, Justin M Brown, Ross Mandeville
OBJECTIVE Peripheral nerve transfers to regain elbow flexion via the ulnar nerve (Oberlin nerve transfer) and median nerves are surgical options that benefit patients. Prior studies have assessed the comparative effectiveness of ulnar and median nerve transfers for upper trunk brachial plexus injury, yet no study has examined the cost-effectiveness of this surgery to improve quality-adjusted life years (QALYs). The authors present a cost-effectiveness model of the Oberlin nerve transfer and median nerve transfer to restore elbow flexion in the adult population with upper brachial plexus injury...
March 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28245672/a-modified-less-invasive-posterior-subscapular-approach-to-the-brachial-plexus-case-report-and-technical-note
#7
Clifford L Crutcher, David G Kline, Gabriel C Tender
The traditional posterior subscapular approach offers excellent exposure of the lower brachial plexus and has been successfully used in patients with recurrent thoracic outlet syndrome after an anterior operation, brachial plexus tumors involving the proximal roots, and postirradiation brachial plexopathy, among others. However, this approach also carries some morbidity, mostly related to the extensive muscle dissection of the trapezius, rhomboids, and levator scapulae. In this article, the authors present the surgical technique and video illustration of a modified, less invasive posterior subscapular approach, using a small, self-retaining retractor and only a partial trapezius and rhomboid minor muscle dissection...
March 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28245671/pilot-study-of-intraoperative-ultrasound-guided-instrument-placement-in-nerve-transection-surgery-for-peripheral-nerve-pain-syndromes
#8
P Troy Henning, Thomas J Wilson, Matthew Willsey, Jessin K John, Miriana Popadich, Lynda J S Yang
Surgical transection of sensory nerves in the treatment of intractable neuropathic pain is a commonly performed procedure. At times these cases can be particularly challenging when encountering obese patients, when targeting deeper nerves or those with a variable branching pattern, or in the case of repeat operations. In this case series, the authors describe their experience with ultrasound-guided surgical instrument placement during transection of a saphenous nerve in the region of prior vascular surgery in 1 patient and in the lateral femoral cutaneous nerve in 2 obese patients...
March 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28245670/optimizing-decellularization-techniques-to-create-a-new-nerve-allograft-an-in-vitro-study-using-rodent-nerve-segments
#9
Caroline A Hundepool, Tim H J Nijhuis, Dimitra Kotsougiani, Patricia F Friedrich, Allen T Bishop, Alexander Y Shin
OBJECTIVE Commercially available processed nerve allografts have been shown to be inferior to autografts in previous animal studies. The authors hypothesized that combining different processing and storage techniques will result in improved nerve ultrastructure preservation, lower immunogenicity, and minimized cellular debris. Different processing protocols were evaluated using chemical detergents, enzymes, and irradiation, with the addition the of enzyme elastase, were used. Additionally, the difference between cold and frozen storage was investigated...
March 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28245669/the-nearly-invisible-intraneural-cyst-a-new-and-emerging-part-of-the-spectrum
#10
Thomas J Wilson, Marie-Noëlle Hébert-Blouin, Naveen S Murthy, Joaquín J García, Kimberly K Amrami, Robert J Spinner
OBJECTIVE The authors have observed that a subset of patients referred for evaluation of peroneal neuropathy with "negative" findings on MRI of the knee have subtle evidence of a peroneal intraneural ganglion cyst on subsequent closer inspection. The objective of this study was to introduce the nearly invisible peroneal intraneural ganglion cyst and provide illustrative cases. The authors further wanted to identify clues to the presence of a nearly invisible cyst. METHODS Illustrative cases demonstrating nearly invisible peroneal intraneural ganglion cysts were retrospectively reviewed and are presented...
March 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28245668/first-human-experience-with-autologous-schwann-cells-to-supplement-sciatic-nerve-repair-report-of-2-cases-with-long-term-follow-up
#11
Zachary C Gersey, S Shelby Burks, Kim D Anderson, Marine Dididze, Aisha Khan, W Dalton Dietrich, Allan D Levi
OBJECTIVE Long-segment injuries to large peripheral nerves present a challenge to surgeons because insufficient donor tissue limits repair. Multiple supplemental approaches have been investigated, including the use of Schwann cells (SCs). The authors present the first 2 cases using autologous SCs to supplement a peripheral nerve graft repair in humans with long-term follow-up data. METHODS Two patients were enrolled in an FDA-approved trial to assess the safety of using expanded populations of autologous SCs to supplement the repair of long-segment injuries to the sciatic nerve...
March 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28245667/novel-technique-for-trialing-peripheral-nerve-stimulation-ultrasonography-guided-stimucath-trial
#12
Chandan G Reddy, Oliver E Flouty, Marshall T Holland, Leigh A Rettenmaier, Mario Zanaty, Foad Elahi
OBJECTIVE Peripheral nerve stimulation (PNS) has been used for the treatment of neuropathic pain for many decades. Despite the specific indications for PNS, clinicians often have difficulty screening for candidates likely to have a good or fair outcome. Given the expense of a permanent implant, most insurance companies will not pay for the implant without a successful PNS trial. And since PNS has only recently been approved by the US Food and Drug Administration, many insurance companies will not pay for a conventional trial of PNS...
March 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28245665/current-concepts-in-plasticity-and-nerve-transfers-relationship-between-surgical-techniques-and-outcomes
#13
REVIEW
Mariano Socolovsky, Martijn Malessy, Dan Lopez, Fernando Guedes, Leandro Flores
OBJECTIVE Neuroplasticity is analyzed in this article as the capacity of the CNS to adapt to external and internal stimuli. It is being increasingly recognized as an important factor for the successful outcome of nerve transfers. Better-known factors are the number of axons that cross the coaptation site, the time interval between trauma and repair, and age. Neuroplasticity is mediated initially by synaptic and neurotransmitter changes. Over time, the activation of previously existing but lowly active connections in the brain cortex contributes further...
March 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28245664/anterior-subcutaneous-transposition-for-persistent-ulnar-neuropathy-after-neurolysis
#14
Jort A N van Gent, Mirjam Datema, Justus L Groen, Willem Pondaag, Job L A Eekhof, Martijn J A Malessy
OBJECTIVE Little is known about optimal treatment if neurolysis for ulnar nerve entrapment at the elbow fails. The authors evaluated the clinical outcome of patients who underwent anterior subcutaneous transposition after failure of neurolysis of ulnar nerve entrapment (ASTAFNUE). METHODS A consecutive series of patients who underwent ASTAFNUE performed by a single surgeon between 2009 and 2014 was analyzed retrospectively. Preoperative and postoperative complaints in the following 3 clinical modalities were compared: pain and/or tingling, weakness, and numbness...
March 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28245663/editorial-autologous-schwann-cells
#15
Wilson Z Ray
No abstract text is available yet for this article.
March 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28240559/introduction-peripheral-nerve-surgery
#16
Mark A Mahan, Wilson Z Ray, Lynda J S Yang, Robert J Spinner
No abstract text is available yet for this article.
March 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28151000/44th-annual-meeting-of-the-cervical-spine-research-society
#17
(no author information available yet)
No abstract text is available yet for this article.
February 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28142281/adjacent-level-arthroplasty-following-cervical-fusion
#18
Deshpande V Rajakumar, Akshay Hari, Murali Krishna, Subhas Konar, Ankit Sharma
OBJECTIVE Adjacent-level disc degeneration following cervical fusion has been well reported. This condition poses a major treatment dilemma when it becomes symptomatic. The potential application of cervical arthroplasty to preserve motion in the affected segment is not well documented, with few studies in the literature. The authors present their initial experience of analyzing clinical and radiological results in such patients who were treated with arthroplasty for new or persistent arm and/or neck symptoms related to neural compression due to adjacent-segment disease after anterior cervical discectomy and fusion (ACDF)...
February 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28142280/can-segmental-mobility-be-increased-by-cervical-arthroplasty
#19
Hsuan-Kan Chang, Chih-Chang Chang, Tsung-Hsi Tu, Jau-Ching Wu, Wen-Cheng Huang, Li-Yu Fay, Peng-Yuan Chang, Ching-Lan Wu, Henrich Cheng
OBJECTIVE Many reports have successfully demonstrated that cervical disc arthroplasty (CDA) can preserve range of motion after 1- or 2-level discectomy. However, few studies have addressed the extent of changes in segmental mobility after CDA or their clinical correlations. METHODS Data from consecutive patients who underwent 1-level CDA were retrospectively reviewed. Indications for surgery were medically intractable degenerative disc disease and spondylosis. Clinical outcomes, including visual analog scale (VAS)-measured neck and arm pain, Neck Disability Index (NDI), and Japanese Orthopaedic Association (JOA) scores, were analyzed...
February 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28142263/current-practice-of-cervical-disc-arthroplasty-a-survey-among-383-aospine-international-members
#20
Timothy C Chin-See-Chong, Pravesh S Gadjradj, Robert J Boelen, Biswadjiet S Harhangi
OBJECTIVE The use of cervical disc arthroplasty (CDA) in spinal practice is controversial. This may be explained by the lack of studies with a large sample size and long-term outcomes. With this survey the authors aimed to evaluate the opinions of spine surgeons on the use of CDA in the current treatment of cervical disc herniation (CDH). METHODS A web-based survey was sent to all members of AOSpine International by email using SurveyMonkey on July 18, 2016. A single reminder was sent on August 18, 2016. Questions included geographic location; specialty; associated practice model; number of discectomies performed annually; the use of CDA, anterior cervical discectomy (ACD), and anterior cervical discectomy and fusion (ACDF); and the expectations for clinical outcomes of these procedures...
February 2017: Neurosurgical Focus
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