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sulcus anatomy

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https://www.readbyqxmd.com/read/29768337/variation-in-origin-of-the-long-head-of-the-biceps-brachii-tendon-in-a-cadaver-a-case-report
#1
Shuji Katsuki, Hayato Terayama, Ryuta Tanaka, Ning Qu, Osamu Tanaka, Kanae Umemoto, Kaori Suyama, Kou Sakabe
INTRODUCTION: In general, the long head of the biceps brachii (LHB) tendon arises from the supraglenoid tubercle in the shoulder joint, and it has an important stabilizing mechanism for the humeral head in the shoulder joint. This case demonstrates that even if the LHB tendon can be palpated outside of the shoulder joint, it may disappear in the intertubercular sulcus (IS) and in the glenohumeral (GH) joint because of abnormal articulation. PATIENT CONCERNS: This case involved the cadaver of an 82-year-old Japanese man (number 1936, cause of death: hepatocellular tumor), who was selected from the bodies used for gross anatomy practice at the Tokai University School of Medicine in 2017...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29750275/endoscopic-endonasal-transclival-approach-to-the-ventral-brainstem-anatomic-study-of-the-safe-entry-zones-combining-fiber-dissection-technique-with-7-tesla-magnetic-resonance-guided-neuronavigation
#2
Alessandro Weiss, Paolo Perrini, Matteo De Notaris, Guadalupe Soria, Alarcon Carlos, Maura Castagna, Lodovico Lutzemberger, Orazio Santo Santonocito, Giuseppe Catapano, Amin Kassam, Alberto Prats Galino
BACKGROUND: Treatment of intrinsic lesions of the ventral brainstem is a surgical challenge that requires complex skull base antero- and posterolateral approaches. More recently, endoscopic endonasal transclival approach (EETA) has been reported in the treatment of selected ventral brainstem lesions. OBJECTIVE: In this study we explored the endoscopic ventral brainstem anatomy with the aim to describe the degree of exposure of the ventral safe entry zones. In addition, we used a newly developed method combining traditional white matter dissection with high-resolution 7T magnetic resonance imaging (MRI) of the same specimen coregistered using a neuronavigation system...
May 10, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29727413/3d-knee-trochlear-morphology-assessment-by-magnetic-resonance-imaging-in-patients-with-normal-and-dysplastic-trochleae
#3
Andrew T Pennock, Aileen Chang, Joshua Doan, James D Bomar, Eric W Edmonds
BACKGROUND: Trochlear dysplasia is recognized as a significant risk factor for patellar instability, but current imaging modalities fail to allow full visualization and classification of the complex 3-dimensional (3D) anatomy of the trochlea. The purpose of this study was to elucidate primary differences in trochlear morphology between patients with and without patellar instability by utilizing 3D magnetic resonance imaging (MRI) reconstructions of the trochlea. METHODS: An institutional review board-approved retrospective review included 24 patients with a diagnosis of patellar instability and an age-matched and sex-matched control population of 12 patients...
April 30, 2018: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/29726766/defining-the-relationship-of-the-optic-radiation-to-the-roof-and-floor-of-the-ventricular-atrium-a-focused-microanatomical-study
#4
Christos Koutsarnakis, Aristotelis V Kalyvas, Spyridon Komaitis, Faidon Liakos, Georgios P Skandalakis, Christos Anagnostopoulos, George Stranjalis
OBJECTIVE The authors investigated the specific topographic relationship of the optic radiation fibers to the roof and floor of the ventricular atrium because the current literature is ambiguous. METHODS Thirty-five normal, adult, formalin-fixed cerebral hemispheres and 30 focused MRI slices at the level of the atrium were included in the study. The correlative anatomy of the optic radiation with regard to the atrial roof and floor was investigated in 15 specimens, each through focused fiber microdissections...
May 4, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29674733/the-use-of-dental-implants-cast-bars-and-sleeve-overdentures-in-oral-cancer-patients
#5
R Ali, A Al-Khayatt, C Barclay
Surgical resection of an oral tumour (and the associated free flap reconstruction) can significantly alter the oral anatomy. The lack of sulcus depth, alveolar ridge, presence of a mobile flap and limited tongue movement can make it impossible for patients to control a removable prosthesis. To help this cohort of patients, dental implants can be invaluable. The Oral Rehabilitation Team at Central Manchester University Dental Hospital have used dental implants to rehabilitate oral cancer patients for over thirty years...
April 27, 2018: British Dental Journal
https://www.readbyqxmd.com/read/29561702/neural-mechanisms-of-social-cognition-in-primates
#6
Marco K Wittmann, Patricia L Lockwood, Matthew F S Rushworth
Activity in a network of areas spanning the superior temporal sulcus, dorsomedial frontal cortex, and anterior cingulate cortex is concerned with how nonhuman primates negotiate the social worlds in which they live. Central aspects of these circuits are retained in humans. Activity in these areas codes for primates' interactions with one another, their attempts to find out about one another, and their attempts to prevent others from finding out too much about themselves. Moreover, important features of the social world, such as dominance status, cooperation, and competition, modulate activity in these areas...
March 21, 2018: Annual Review of Neuroscience
https://www.readbyqxmd.com/read/29552274/eyebrow-contouring-with-hyaluronic-acid-gel-filler-injections
#7
Hamzah Mustak, Danica Fiaschetti, Adit Gupta, Robert Goldberg
Background: The eyebrow region presents challenges for filling: the skin is thick, the three-dimensional anatomy is complex and there is a predisposition towards fat atrophy and skeletonization with aging. Hyaluronic acid gel fillers are well known for their use in the periorbital region. We report our long-term experience with eyebrow filling over a period of five years. Methods: Twenty cases of periorbital eyebrow filling with hyaluronic acid gel fillers were followed up over a period of five years. The eyebrow filling was customized based on the patient's anatomical features in a three-dimensional plane...
February 2018: Journal of Clinical and Aesthetic Dermatology
https://www.readbyqxmd.com/read/29471101/on-object-selectivity-and-the-anatomy-of-the-human-fusiform-gyrus
#8
Kevin S Weiner, Vaidehi S Natu, Kalanit Grill-Spector
pFs is a functionally-defined region in the human brain that is involved in recognizing objects. A recent trend refers to pFs as the posterior fusiform sulcus, which is a neuroanatomical structure that does not exist. Here, we correct this mistake. To achieve this goal, we first recount the original definitions of pFs and then review the identification of sulci within and surrounding the fusiform gyrus (FG) including the mid-fusiform sulcus (MFS), which is a tertiary sulcus within the FG. We highlight that tertiary sulci, such as the MFS, are often absent from brain atlases, which complicates the accurate localization of functional regions, as well as the understanding of structural-functional relationships in ventral temporal cortex (VTC)...
June 2018: NeuroImage
https://www.readbyqxmd.com/read/29460825/the-predictability-precision-of-superior-semicircular-canal-through-radiological-assessment-and-microanatomical-dissection
#9
Engin Kara, Kübra Öztürk, Ezgi Oktay, Vural Hamzaoğlu, Deniz Uzmansel, Yusuf Vayisoğlu, Hakan Özalp, Mehmet Farsak, Zeynep Cansu Aladağ, Tuğçe Pütürgeli, Can Mehmet Eti, Ahmet Dağtekin, Merve Türkegün, Derya Ümit Talas
OBJECTIVE: There is still ongoing research on the relationship of arcuate eminence (AE) and superior semicircular canal (SSC). We aimed to evaluate the precision of predictability of SSC through the morphology of AE via radiological means. MATERIALS AND METHODS: This investigation is performed on 12 dry skulls belonging to Mersin University Medical Faculty department of anatomy. Computed tomography (CT) assessment is performed with 0.5-mm-thin sections temporal bone algorithm on dry skulls which were marked with fixated copper wire by scotch tapes on the most prominent part of the middle fossa floor assuming the location of AE...
February 20, 2018: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/29258935/low-retrosigmoid-infratonsillar-approach-to-lateral-medullary-lesions
#10
Baran Bozkurt, M Yashar S Kalani, Kaan Yağmurlu, Evgenii Belykh, Mark C Preul, Peter Nakaji, Robert F Spetzler
OBJECTIVE: In our study, we comprehensively detail the technique of the low retrosigmoid approach to the lateral medullary area, including the inferior cerebellar peduncle, postolivary sulcus, pontomedullary sulcus, and inferior olivary nucleus, as well as the lateral recess of the fourth ventricle. METHODS: Four formalin-fixed, silicone-injected, cadaveric human heads were examined under the operating microscope to demonstrate pertinent descriptive anatomy using the low retrosigmoid approach in a stepwise manner...
March 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29240861/a-systematic-review-of-lower-lip-anatomy-mechanics-of-local-flaps-and-special-considerations-for-lower-lip-reconstruction
#11
Stefanos Boukovalas, Alexis L Boson, Joshua P Hays, C Helen Malone, Eric L Cole, Richard F Wagner
Reconstruction of defects of the lower lip can be very challenging. The aim of this review is to analyze the unique characteristics of lower lip anatomy and provide a systematic approach for lower lip reconstruction. A review of current literature was performed using the PubMed database. Articles analyzing the anatomic and histologic characteristics of the lower lip, mechanics of local faps, and different lower lip reconistruction techniques were included. Articles focused on lower lip reconstruction with free faps were excluded...
December 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29207690/morphological-and-morphometric-study-of-coronary-sinus-in-north-indian-population
#12
Beegum Zabina, Rajan Kumar Singla, Ravi Kant Sharma, Neelam Bala
Introduction: Coronary sinus (CS) is the largest vein draining the blood from heart. It is a muscular tube of about 2 cm to 3 cm length and 1 cm in caliber. It has become a clinically important structure through its role in providing access for different cardiac procedures viz., biventricular pacing, arrhythmia ablation and for deployment of an array of cardiac devices. Aim: To study the location, shape, length and width of CS including its left atrial muscular coverage in 50 cadaveric hearts...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29140463/anatomic-investigation-of-the-trajectory-for-stereotactic-laser-amygdalohippocampectomy
#13
Vanessa M Holanda, Abuzer Gungor, Serhat Baydin, Erik H Middlebrooks, Shabbar F Danish
BACKGROUND: Magnetic resonance imaging-guided laser interstitial thermal therapy (LITT) has emerged as a promising treatment for mesial temporal lobe epilepsy. Surgeons must understand the relevant anatomy that is traversed by the catheter and affected by ablation. OBJECTIVE: To study the anatomic structures crossed by the LITT catheter until it reaches the amygdala. METHODS: Three human cadaveric heads were implanted with catheters using a frameless stereotactic technique...
November 11, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28916842/how-interindividual-differences-in-brain-anatomy-shape-reading-accuracy
#14
Arnaud Cachia, Margot Roell, Jean-François Mangin, Zhong Yi Sun, Antoinette Jobert, Lucia Braga, Olivier Houde, Stanislas Dehaene, Grégoire Borst
The capacity to read develops throughout intensive academic learning and training. Several studies have investigated the impact of reading on the brain, and particularly how the anatomy of the brain changes with reading acquisition. In the present study, we investigated the converse issue, namely whether and how reading acquisition is constrained by the anatomy of the brain. Using multimodal MRI, we found that (a) the pattern (continuous or interrupted sulcus) of the posterior part of the left lateral occipito-temporal sulcus (OTS) hosting the visual word form area (VWFA) predicts reading skills in adults; that (b) this effect is modulated by the age of reading acquisition; and that (c) the length of the OTS sulcal interruption is associated with reading skills...
March 2018: Brain Structure & Function
https://www.readbyqxmd.com/read/28871500/computational-neuroanatomy-of-human-stratum-proprium-of-interparietal-sulcus
#15
Maiko Uesaki, Hiromasa Takemura, Hiroshi Ashida
Recent advances in diffusion-weighted MRI (dMRI) and tractography have enabled identification of major long-range white matter tracts in the human brain. Yet, our understanding of shorter tracts, such as those within the parietal lobe, remains limited. Over a century ago, a tract connecting the superior and inferior parts of the parietal cortex was identified in a post-mortem study: stratum proprium of interparietal sulcus (SIPS; Sachs, Das hemisphärenmark des menschlichen grosshirns. Verlag von georg thieme, Leipzig, 1892)...
September 4, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28846692/gyri-of-the-human-parietal-lobe-volumes-spatial-extents-automatic-labelling-and-probabilistic-atlases
#16
Heather M Wild, Rolf A Heckemann, Colin Studholme, Alexander Hammers
Accurately describing the anatomy of individual brains enables interlaboratory communication of functional and developmental studies and is crucial for possible surgical interventions. The human parietal lobe participates in multimodal sensory integration including language processing and also contains the primary somatosensory area. We describe detailed protocols to subdivide the parietal lobe, analyze morphological and volumetric characteristics, and create probabilistic atlases in MNI152 stereotaxic space...
2017: PloS One
https://www.readbyqxmd.com/read/28838104/approaching-the-atrium-through-the-intraparietal-sulcus-mapping-the-sulcal-morphology-and-correlating-the-surgical-corridor-to-underlying-fiber-tracts
#17
Christos Koutsarnakis, Faidon Liakos, Aristotelis V Kalyvas, Evangelia Liouta, John Emelifeonwu, Theodosis Kalamatianos, Damianos E Sakas, Elizabeth Johnson, George Stranjalis
BACKROUND: Although the operative corridor used during the intraparietal transsulcal approach to the atrium has been previously investigated, most anatomical studies focus on its relationship to the optic radiations. OBJECTIVE: To study the intraparietal sulcus (IPS) morphology and to explore the subcortical anatomy with regard to the surgical trajectory used during the intraparietal transsulcal tranventricular approach. METHODS: Twenty-five adult, formalin fixed, cerebral hemispheres were investigated...
August 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28828058/arthroscopic-knee-anatomy-in-young-achondroplasia-patients
#18
M Del Pilar Duque Orozco, N C Record, K J Rogers, M B Bober, W G Mackenzie, A Atanda
PURPOSE: Achondroplasia is the most common form of skeletal dysplasia, affecting more than 250 000 individuals worldwide. In these patients, the developing knee undergoes multiple anatomical changes. The purpose of this study was to characterise the intra-articular knee anatomy in children with achondroplasia who underwent knee arthroscopy. METHODS: Records of achondroplasia patients who underwent knee arthroscopy between 2009 and 2014 were reviewed. Demographic data, operative reports, follow-up notes, MRI and arthroscopy images were reviewed...
June 1, 2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28756487/anatomo-functional-correspondence-in-the-superior-temporal-sulcus
#19
C Bodin, S Takerkart, P Belin, O Coulon
The superior temporal sulcus (STS) is an intriguing region both for its complex anatomy and for the multiple functions that it hosts. Unfortunately, most studies explored either the functional organization or the anatomy of the STS only. Here, we link these two aspects by investigating anatomo-functional correspondences between the voice-sensitive cortex (Temporal Voice Areas) and the STS depth. To do so, anatomical and functional scans of 116 subjects were processed such as to generate individual surface maps on which both depth and functional voice activity can be analyzed...
July 29, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28735495/neuroanatomical-and-resting-state-eeg-power-correlates-of-central-hearing-loss-in-older-adults
#20
Nathalie Giroud, Sarah Hirsiger, Raphaela Muri, Andrea Kegel, Norbert Dillier, Martin Meyer
To gain more insight into central hearing loss, we investigated the relationship between cortical thickness and surface area, speech-relevant resting state EEG power, and above-threshold auditory measures in older adults and younger controls. Twenty-three older adults and 13 younger controls were tested with an adaptive auditory test battery to measure not only traditional pure-tone thresholds, but also above individual thresholds of temporal and spectral processing. The participants' speech recognition in noise (SiN) was evaluated, and a T1-weighted MRI image obtained for each participant...
July 22, 2017: Brain Structure & Function
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