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https://www.readbyqxmd.com/read/29341941/cauda-equina-syndrome-due-to-lumbar-disc-herniation-a-review-of-literature
#1
Stylianos Kapetanakis, Constantinos Chaniotakis, Constantinos Kazakos, Jannis V Papathanasiou
Cauda equina syndrome (CES) is a rare neurologic condition that is caused by compression of the cauda equina. Cauda equina consists of spinal nerves L2-L5, S1-S5 and the coccygeal nerve. The compression of these nerve roots can be caused mainly by lumbar disc herniation (45% of all causes). The diagnosis consists of two critical points: a) detailed history and physical examination and b) MRI or CT. The gold standard of the treatment of this syndrome is the surgical approach in combination with the timing of onset of symptoms...
December 20, 2017: Folia Medica
https://www.readbyqxmd.com/read/29339841/role-of-autologous-non-vascularised-intramedullary-fibular-strut-graft-in-humeral-shaft-nonunions-following-failed-plating
#2
Sreekanth Kashayi-Chowdojirao, Aashish Vallurupalli, Vijay Krishna Chilakamarri, Chandrasekhar Patnala, Lalith Mohan Chodavarapu, Nageswara Rao Kancherla, Asif Hussain Khazi Syed
Background: Non-union humeral shaft fractures are seen frequently in clinical practice at about 2-10% in conservative management and 30% in surgically operated patients. Osteosynthesis using dynamic compression plate (DCP), intramedullary nailing, locking compression plate (LCP), Ilizarov technique along with bone grafting have been reported previously. In cases of prior failed plate-screw osteosynthesis the resultant osteopenia, cortical defect, bone loss, scalloping around screws and metallosis, make the management of non-union more complicated...
November 2017: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/29332130/cerebrospinal-fluid-pressure-revisiting-factors-influencing-optic-nerve-head-biomechanics
#3
Yi Hua, Andrew P Voorhees, Ian A Sigal
Purpose: To model the sensitivity of the optic nerve head (ONH) biomechanical environment to acute variations in IOP, cerebrospinal fluid pressure (CSFP), and central retinal artery blood pressure (BP). Methods: We extended a previously published numerical model of the ONH to include 24 factors representing tissue anatomy and mechanical properties, all three pressures, and constraints on the optic nerve (CON). A total of 8340 models were studied to predict factor influences on 98 responses in a two-step process: a fractional factorial screening analysis to identify the 16 most influential factors, followed by a response surface methodology to predict factor effects in detail...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29326769/osteoradionecrosis-in-subaxial-cervical-spine-a-rare-and-devastating-complication-a-case-report
#4
M Z Rashid, M H Ariffin, S A Rhani, A Baharudin, K Ibrahim
Osteoradionecrosis, a rare complication of radiation therapy, is a slow progression disease which affects the surrounding structures of spinal components. It essentially weakens the soft tissue and bony configuration and can cause nerve impingement or cord compression. We describe a patient who underwent radiotherapy for thyroid cancer and presented with cervical kyphosis with anterolisthesis of C3/C4 and C4/C5 some 32 years later. We explore the role of anterior and posterior fusion, as well as hyperbaric oxygen therapy in promoting healing...
November 2017: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/29325937/histopathological-analysis-of-tamoxifen-on-epidural-fibrosis
#5
Yasar Ozturk, Ismail Bozkurt, Mesut Emre Yaman, Yahya Guvenc, Tolga Tolunay, Deniz Billur, Fatma Kubra Erbay, Salim Senturk, Gokhan Bozkurt
BACKGROUND: Epidural fibrosis is a challenging topic in spinal surgery. This phenomenon constitutes one of the the main reasons behind "post-laminectomy syndrome" or "failed-back surgery syndrome", which leads to persistent back and leg pain in association with compression and/or stretching the nerve root or the dura. The exact mechanism of action in epidural fibrosis is complex and remains uncertain. Excessive deposition of collagen, fibronectin, and dermatan sulfate known as "extracellular matrix", and decrease of tissue cellularity results in epidural fibrosis...
January 8, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29321702/carpal-tunnel-syndrome-in-obstructive-sleep-apnea-patients
#6
Özgür Bilgin Topçuoğlu, Özlem Oruç, Sema Saraç, Gülgün Çetintaş Afşar, Kayıhan Uluç
Introduction: Carpal tunnel syndrome (CTS) is the most common entrapment neuropathy of the upper extremity. It is usually associated with the compression of the median nerve in the median groove. Because the main symptoms of CTS pain and numbness worsen at night, sleep disorders in CTS patients and the impact of preferred sleeping position on CTS development have been formerly studied. However, to the best of our knowledge, this is the first study assessing the frequency of CTS in obstructive sleep apnea (OSA) patients...
December 2017: Noro Psikiyatri Arsivi
https://www.readbyqxmd.com/read/29320906/a-bifid-reversed-palmaris-longus-muscle-causing-median-nerve-compression-in-a-child
#7
Samuel C George, Zahid Hassan
No abstract text is available yet for this article.
January 1, 2018: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/29319400/deep-lateral-wall-orbital-decompression-following-strabismus-surgery-in-patients-with-type-ii-ophthalmic-graves-disease
#8
Michael P Ellis, Emily C Broxterman, Alan R Hromas, Thomas J Whittaker, Jason A Sokol
PURPOSE: Surgical management of ophthalmic Graves' disease traditionally involves, in order, orbital decompression, followed by strabismus surgery and eyelid surgery. Nunery et al. previously described two distinct sub-types of patients with ophthalmic Graves' disease; Type I patients exhibit no restrictive myopathy (no diplopia) as opposed to Type II patients who do exhibit restrictive myopathy (diplopia) and are far more likely to develop new-onset worsening diplopia following medial wall and floor decompression...
January 10, 2018: Orbit
https://www.readbyqxmd.com/read/29317060/fibromyalgia-and-unexplained-widespread-pain-the-idiopathic-cerebrospinal-pressure-dysregulation-hypothesis
#9
M Hulens, W Dankaerts, I Stalmans, A Somers, G Vansant, R Rasschaert, F Bruyninckx
Fibromyalgia (FM) is a debilitating, widespread pain disorder that is assumed to originate from inappropriate pain processing in the central nervous system. Psychological and behavioral factors are both believed to underlie the pathogenesis and complicate the treatment. This hypothesis, however, has not yet been sufficiently supported by scientific evidence and accumulating evidence supports a peripheral neurological origin of the symptoms. We postulate that FM and several unexplained widespread pain syndromes are caused by chronic postural idiopathic cerebrospinal hypertension...
January 2018: Medical Hypotheses
https://www.readbyqxmd.com/read/29305127/7-0tesla-mri-tractography-in-patients-with-trigeminal-neuralgia
#10
Hyeong Cheol Moon, Soon-Tae You, Hyeon Man Baek, Young Jai Jeon, Chan-A Park, Jei Jun Cheong, Youn Joo Lee, Young Seok Park
7.0Tesla(T) high-resolution diffusion tensor imaging (DTI) can supply information on changing microstructures in cranial nerves. We investigated DTI parameters and the feasibility of DTI criteria for diagnosing trigeminal neuralgia (TN). In this study, 14 patients (28 hemispheres) of mean age 49.0years (range, 31-64) with TN underwent DTI using 7.0TMRI. We compared fractional anisotropy (FA), axial diffusivity (AD), mean diffusivity (MD), and radial diffusivity (RD) of affected-side and unaffected-side trigeminal nerves using DTI...
January 2, 2018: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/29303001/transbrachioradialis-approach-to-the-radial-tunnel-an-anatomic-study-of-5-potential-compression-sites
#11
Jason R Ummel, John G Coury, Zachary C Lum, Marc A Trzeciak
BACKGROUND: Recent anatomic studies have failed to demonstrate a single utilitarian approach to intraoperative identification and surgical release of all 5 potential sites of posterior interosseous nerve (PIN) compression in the radial tunnel. This study examines if a single incision brachioradialis-splitting approach without the use of additional anatomic windows is capable of adequately exposing the entire length of the radial tunnel, including all 5 sites of PIN compression to allow for adequate release...
January 1, 2018: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/29291292/peroneal-nerve-decompression
#12
Mark Corriveau, Jacob D Lescher, Amgad S Hanna
Peroneal neuropathy is a common pathology encountered by neurosurgeons. Symptoms include pain, numbness, and foot drop. When secondary to compression of the nerve at the fibular head, peroneal (fibular) nerve release is a low-risk procedure that can provide excellent results with pain relief and return of function. In this video, the authors highlight key operative techniques to ensure adequate decompression of the nerve while protecting the 3 major branches, including the superficial peroneal nerve, deep peroneal nerve, and recurrent genicular (articular) branches...
January 2018: Neurosurgical Focus
https://www.readbyqxmd.com/read/29288851/flat-posterior-cranial-fossa-affects-outcomes-of-microvascular-decompression-for-trigeminal-neuralgia
#13
Toshiki Fukuoka, Yusuke Nishimura, Masahito Hara, Kei Nomura, Hiroshi Ryu, Satoshi Yoshikawa, Toshihiko Wakabayashi
OBJECTIVE: The aim of this study was to investigate prognostic factors for microvascular decompression (MVD) in patients with primary trigeminal neuralgia (TN), with a particular focus on the morphology of the posterior cranial fossa (PCF). METHODS: The present study investigated 126 surgically treated primary TN patients with more than 1-year follow-up who underwent high-resolution magnetic resonance imaging between April 2003 and September 2015. We retrospectively reviewed clinical information and operative findings...
December 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29287811/biomechanical-simulation-of-stresses-and-strains-exerted-on-the-spinal-cord-and-nerves-during-scoliosis-correction-maneuvers
#14
Juan Henao, Hubert Labelle, Pierre-Jean Arnoux, Carl-Éric Aubin
STUDY DESIGN: Biomechanical analysis of the spinal cord and nerves during scoliosis correction maneuvers through numerical simulations. OBJECTIVE: To assess the biomechanical effects of scoliosis correction maneuvers and stresses generated on the spinal nervous structures. BACKGROUND DATA: Important forces are applied during scoliosis correction surgery, which could potentially lead to neurologic complications due to stresses exerted on the nervous structures...
January 2018: Spine Deformity
https://www.readbyqxmd.com/read/29286997/microvascular-decompression-for-trigeminal-neuralgia-due-to-venous-compression-alone
#15
Yonghui Zhao, Xiang Zhang, Junchao Yao, Heyang Li, Yong Jiang
Microvascular decompression (MVD) has been confirmed as an effective treatment of trigeminal neuralgia (TN); however, most previous reports just focused on MVD for TN caused by arterial conflict, there is a paucity of information about its use in venous compression causing TN. In the present study, the authors summarize 5-year experience of MVD for primary TN due to venous compression alone. Thirty-four patients with primary TN caused solely by veins underwent MVD. The presenting symptoms, key operative notes, surgical outcomes together with complications were reviewed...
January 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29284846/comparison-of-the-intravenous-and-epidural-administration-of-tumor-necrosis-factor-alpha-antagonists-in-an-experimental-rat-pain-model
#16
Serbülent Gökhan Beyaz, Mustafa Erkan İnanmaz, Tolga Ergönenç, Onur Palabıyık, Yakup Tomak, Ayça Taş Tuna
Introduction: Inflammatory cytokines secreted from the nucleus pulposus are thought to lead to lumbar nerve root compression-like symptoms. Tumor necrosis factor-alpha (TNF-α), an inflammatory cytokine, likely plays an important role in lumbar disc hernia-related leg pain. In this experimental study, we compared the effectiveness of TNF-α antagonists administered through the intravenous or epidural route in lumbar spine pathologies. Materials and Methods: After ethics committee approval had been obtained, 24 Sprague Dawley male rats aged 70-90 days and weighing 250-300 g each were allocated to four groups...
October 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/29279751/thoracolumbar-vertebral-injuries-with-neurological-deficit-treated-with-posterior-decompression-short-segment-pedicle-screw-fixation-and-interlaminar-fusion
#17
Sachin Kumar, Satish Kumar, Rajender Kumar Arya, Avinash Kumar
Study Design: Prospective clinical study. Purpose: The purpose of this study was to evaluate the effect of interlaminar fusion and short segment pedicle screw fixation on thoracolumbar vertebral injuries for preventing pain and post-traumatic kyphosis. Overview of Literature: The treatment of thoracolumbar injuries continues to be one of the most controversial areas in spine care. The main aim of surgical treatment is to decompress the spinal cord or nerve roots, realign the spine, and correct or prevent post-traumatic kyphosis...
December 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/29279723/diagnostics-and-therapy-of-vestibular-schwannomas-an-interdisciplinary-challenge
#18
REVIEW
Steffen Rosahl, Christopher Bohr, Michael Lell, Klaus Hamm, Heinrich Iro
Vestibular schwannomas (VS) expand slowly in the internal auditory canal, in the cerebellopontine angle, inside the cochlear and the labyrinth. Larger tumors can displace and compress the brainstem. With an annual incidence of 1:100,000 vestibular schwannoma represent 6-7% of all intracranial tumors. In the cerebellopontine angle they are by far the most neoplasm with 90% of all lesions located in this region. Magnetic resonance imaging (MRI), audiometry, and vestibular diagnostics are the mainstays of the clinical workup for patients harboring tumors...
2017: GMS Current Topics in Otorhinolaryngology, Head and Neck Surgery
https://www.readbyqxmd.com/read/29276474/experimental-gene-therapy-with-serine-histogranin-and-endomorphin-1-for-the-treatment-of-chronic-neuropathic-pain
#19
Stanislava Jergova, Catherine E Gordon, Shyam Gajavelli, Jacqueline Sagen
The insufficient pain relief provided by current pharmacotherapy for chronic neuropathic pain is a serious medical problem. The enhanced glutamate signaling via NMDA receptors appears to be one of the key events in the development of chronic pain. Although effective, clinical use of systemic NMDA antagonists is limited by adverse effects such as hallucinations and motor dysfunction. Opioids are also potent analgesics but their chronic use is accompanied by tolerance and risk of addiction. However, combination of NMDA antagonists and opioids seems to provide a stable pain relieve at subthreshold doses of both substances, eliminating development of side effects...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29274929/intrapericardial-neurofibromatosis-with-coronary-involvement-a-case-report
#20
E A Moghadam, M A Navabi Shirazi, M R Mirzaaghayan, M Nikoufar, A Ghamari
Neurocutaneous syndromes are heterogenous diseases that are diagnosed in the presence of skin and central nervous system disorders. Neurofibromatosis (NF) is one of these disorders, with autosomal dominant inheritance, that causes tumors that grow on nerves as well as other abnormalities such as skin changes and bone deformities. The most common form of NF is type I. A 6-year-old Iranian boy with neurofibromatosis was referred to the pediatric cardiology clinic due to a soft holosystolic murmur discovered on routine examination...
December 20, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
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