The medial safe zone for treating intraneural ganglion cysts in the tarsal tunnel: a technical note

ConclusionThe safe zone for the tibial nerve in the tarsal tunnel can be exposed by mobilization and gentle retraction of the vascular bundle. In cases of intraneural ganglion cysts, all apparent connections between the nerve and degenerative joints within this safe zone can be resected without injury to important distal nerve branches.
Source: Acta Neurochirurgica - Category: Neurosurgery Source Type: research

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Publication date: Available online 17 August 2019Source: NeuroscienceAuthor(s): Angélica Almanza, Pedro Segura-Chama, Martha León-Olea, Enoch Luis, René Garduño-Gutiérrez, Jonathan Mercado-Reyes, Karina Simón-Arceo, Ulises Coffeen, Arturo Hernández-Cruz, Francisco Pellicer, Francisco MercadoAbstractIntrathecal (i.t.) administration of quinpirole, a dopamine (DA) D2-like receptor agonist, produces antinociception to mechanonociceptive stimuli but not to thermonociceptive stimuli. To determine a cellular mechanism for the specific antinociceptive effect of D2-like receptor act...
Source: Neuroscience - Category: Neuroscience Source Type: research
This study is aimed to investigate the effects of periocular steroids induction on intraocular pressure (IOP), retinal ganglion cells (RGCs) and trabecular meshwork (TM) ultrastructure in glucocorticoid-induced ocular hypertension mice model. Materials and Methods: Dexamethasone-21-acetate (Dex-Ace) was administered through periocular conjunctival fornix injection every 3 days in C57BL/6J mice. Intraocular pressure was measured weekly by rebound tonometry. RGCs were examined with immunofluorescent staining of BRN3a at week 1, 4, and 8. TM morphology was visualized with electron microscopy. Autophagy was evaluated with immu...
Source: Current Eye Research - Category: Opthalmology Authors: Tags: Curr Eye Res Source Type: research
In this report, we describe a novel earlier stage in afferent development. Immunostaining for a neurofilament-associated antigen (NAA) reveals the early axon distributions with remarkable clarity. Using a combination of DiI axon tract tracing, analysis ofneurogenin1 null mice, which do not develop trigeminal ganglia, and mouse embryos maintained in vitro, we show that the first axons to innervate the cerebellar primordium as early as E9 arise from the trigeminal ganglion. Therefore, early trigeminal axons are in situ before the Purkinje cells are born. Double immunostaining for NAA and markers of the different domains in t...
Source: Anatomy and Embryology - Category: Anatomy Source Type: research
Authors: Chen K, Dai F, Li G, Dong J, Wang Y Abstract The present study aimed to investigate the use of computerized tomography (CT) perfusion for evaluating cerebral hemodynamics following traumatic brain injury (TBI) in rabbits. The animals were randomly assigned into four groups (n=10 animals/group): i) Control, ii) TBI, iii) TBI + common decompression and iv) TBI + controlled decompression groups. A TBI model was established in rabbits using epidural balloon inflation. In the groups receiving intervention, animals were provided common decompression or controlled decompression treatments. Conventional CT and CT ...
Source: Experimental and Therapeutic Medicine - Category: General Medicine Tags: Exp Ther Med Source Type: research
Retinal ganglion cell topography and spatial resolution estimation in the Japanese tree frog Hyla japonica (Günther, 1859). J Anat. 2019 Aug 16;: Authors: Pushchin I Abstract Tree frogs are an interesting and diverse group of frogs. They display a number of unique adaptations to life in the arboreal environment. Vision plays a crucial role in their ecology. The topography of retinal ganglion cells (GCs) is closely related to a species' visual behavior. Despite a large amount of research addressing GC topography in vertebrates, there is scarce data on this subject in tree frogs. I studied the topo...
Source: Journal of Anatomy - Category: Anatomy Authors: Tags: J Anat Source Type: research
Mitochondrial dysfunction is an important cause of heritable vision loss. Mutations affecting mitochondrial bioenergetics may lead to isolated vision loss or life-threatening systemic disease, depending on a mutation's severity. Primary optic nerve atrophy resulting from death of retinal ganglion cells is the most prominent ocular manifestation of mitochondrial disease. However, dysfunction of other retinal cell types has also been described, sometimes leading to a loss of photoreceptors and retinal pigment epithelium that manifests clinically as pigmentary retinopathy. A popular mouse model of mitochondrial disease that l...
Source: Journal of Biological Chemistry - Category: Chemistry Authors: Tags: Neurobiology Source Type: research
This study characterizes axonally transported proteins in the healthy adult visual system by analyzing proteomes from multiple compartments of retinal ganglion cell projections in the intact brain.Graphical Abstract
Source: Cell Reports - Category: Cytology Source Type: research
ConclusionsInhibition of NF-κB expression and oxidative stress by carnosine treatment plays a significant role in the prevention of RGC loss after ONC. The results also highlight the potential of carnosine as a neuroprotective agent against RGC loss in optic neuropathy.
Source: Neuroscience Letters - Category: Neuroscience Source Type: research
CONCLUSIONS: Fluid within the labyrinthine and geniculate segments of the facial nerve canal is relatively common. Geniculate ganglion meningoceles are also observed, though less frequently. Such findings should be considered of little clinical importance without radiologic evidence of CSF otorrhea, meningitis, or facial nerve palsy.
Source: American Journal of Neuroradiology - Category: Radiology Authors: Tags: HEAD & amp; NECK Source Type: research
SUMMARY: The purpose of this report is to describe the technical aspects of CT-guided C2 dorsal root ganglion diagnostic block and radiofrequency ablation for refractory cervicogenic headache. CT guidance allows precise and safe positioning of a needle adjacent to the C2 dorsal root ganglion. At-risk neural and vascular structures can be avoided with CT, and it can provide a thorough understanding of upper cervical neuroanatomy.
Source: American Journal of Neuroradiology - Category: Radiology Authors: Tags: SPINE Source Type: research
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