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sulcus anatomy

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https://www.readbyqxmd.com/read/27932858/one-stage-bone-strip-reconstruction-technique-with-balloon-sinus-dilatation-surgery-for-chronic-maxillary-atelectasis
#1
Tomoyuki Kashima, Robert A Goldberg, Jocelyne C Kohn, Daniel B Rootman
PURPOSE: Chronic maxillary atelectasis is characterized by unilateral spontaneous enophthalmos and hypoglobus due to increased orbital volume secondary to maxillary sinus inward deformation. Reformation of the sinus architecture and reconstruction of the orbit are key to a successful outcome. Here, we introduce a one-staged surgery that addresses both these goals. PATIENTS AND METHODS: We retrospectively reviewed 11 patients treated with one-stage orbital and sinus surgery...
2016: Clinical Ophthalmology
https://www.readbyqxmd.com/read/27861650/influence-of-four-different-abutment-materials-and-the-adhesive-joint-of-two-piece-abutments-on-cervical-implant-bone-and-soft-tissue
#2
Christian Mehl, Volker Gaβling, Stephan Schultz-Langerhans, Yahya Açil, Telse Bähr, Jörg Wiltfang, Matthias Kern
PURPOSE: The main aim of this study was to evaluate the influence of four different abutment materials and the adhesive joint of two-piece abutments on the cervical implant bone and soft tissue. MATERIALS AND METHODS: Sixty-four titanium implants (Camlog Conelog; 4.3 ± 9 mm) were placed bone level into the edentulous arches of four minipigs. Four different types of abutments were placed at implant exposure: zirconium dioxide, lithium disilicate, and titanium bonded to a titanium luting base with resin cement; one-piece titanium abutments served as the control...
November 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27680523/augmenting-the-prejowl-deciding-between-fat-fillers-and-implants
#3
Fred G Fedok, Harry Mittelman
The prejowl sulcus is a complex anatomic structure that results from several age-related changes in the lower face. These changes include the localized atrophy of a segment of the mandible inferior to the mental foreman, fat atrophy, and dehiscence and laxity of the ligamentous and muscular components of the region. The correction of the prejowl sulcus is rarely accomplished through rhytidectomy alone. Instead, the volume deficit of the sulcus usually requires the replacement of volume. Solid implants, fillers, and fat transfer may be used to improve the contour of the lower face...
October 2016: Facial Plastic Surgery: FPS
https://www.readbyqxmd.com/read/27677522/the-paramedian-supracerebellar-transtentorial-approach-to-the-posterior-fusiform-gyrus
#4
Anthony M T Chau, Filippo Gagliardi, Adam Smith, Nicholas R Pelzer, Fiona Stewart, Pietro Mortini, Samer K Elbabaa, Anthony J Caputy, Cristian Gragnaniello
BACKGROUND: The posterior fusiform gyrus lies in a surgically challenging region. Several approaches have been described to access this anatomical area. The paramedian supracerebellar transtentorial (SCTT) approach benefits from minimal disruption of normal neurovascular tissue. The aim of this study was to demonstrate its application to access the posterior fusiform gyrus. METHODS: Three brains and six cadaveric heads were examined. A stepwise dissection of the SCTT approach to the posterior fusiform gyrus was performed...
November 2016: Acta Neurochirurgica
https://www.readbyqxmd.com/read/27650644/investigation-of-topographical-anatomy-of-broca-s-area-an-anatomic-cadaveric-study
#5
Pınar Eser Ocak, Hasan Kocaelı
PURPOSE: The sulci constituting the structure of the pars triangularis and opercularis, considered as 'Broca's area', present wide anatomical and morphological variations between different hemispheres. The boundaries are described differently from one another in various studies. The aim of this study was to explore the topographical anatomy, confirm the morphological asymmetry and highlight anatomical variations in Broca's area. METHODS: This study was performed with 100 hemispheres to investigate the presence, continuity, patterns and connections of the sulcal structures that constitute the morphological asymmetry of Broca's area...
September 20, 2016: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/27600947/reduced-cortical-thickness-and-increased-surface-area-in-antisocial-personality-disorder
#6
Weixiong Jiang, Gang Li, Huasheng Liu, Feng Shi, Tao Wang, Celina Shen, Hui Shen, Seong-Whan Lee, Dewen Hu, Wei Wang, Dinggang Shen
Antisocial personality disorder (ASPD), one of whose characteristics is high impulsivity, is of great interest in the field of brain structure and function. However, little is known about possible impairments in the cortical anatomy in ASPD, in terms of cortical thickness (CTh) and surface area (SA), as well as their possible relationship with impulsivity. In this neuroimaging study, we first investigated the changes of CTh and SA in ASPD patients, in comparison to those of healthy controls, and then performed correlation analyses between these measures and the ability of impulse control...
November 19, 2016: Neuroscience
https://www.readbyqxmd.com/read/27579245/modified-bilateral-neurovascular-cheek-flap-functional-reconstruction-of-extensive-lower-lip-defects
#7
Bowornsilp Chowchuen
BACKGROUND: Reconstruction of extensive lower lip defects is challenging, and functional outcomes are difficult to achieve. METHODS: A modified bilateral neurovascular cheek (MBNC) flap has been described. The data of patients with cancer of the lower lip treated with wide excision and reconstructed with the MBNC flap in the Plastic Surgery Unit, Srinagarind Hospital, Khon Kaen University, from 1966 to 2012 were reviewed. RESULTS: Of the total of 143 patients included, 90...
May 2016: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/27566976/specialization-of-the-right-intraparietal-sulcus-for-processing-mathematics-during-development
#8
Margot A Schel, Torkel Klingberg
Mathematical ability, especially perception of numbers and performance of arithmetics, is known to rely on the activation of intraparietal sulcus (IPS). However, reasoning ability and working memory, 2 highly associated abilities also activate partly overlapping regions. Most studies aimed at localizing mathematical function have used group averages, where individual variability is averaged out, thus confounding the anatomical specificity when localizing cognitive functions. Here, we analyze the functional anatomy of the intraparietal cortex by using individual analysis of subregions of IPS based on how they are structurally connected to frontal, parietal, and occipital cortex...
August 27, 2016: Cerebral Cortex
https://www.readbyqxmd.com/read/27566261/functional-neuroanatomy-of-arithmetic-and-word-reading-and-its-relationship-to-age
#9
Tanya M Evans, D Lynn Flowers, Megan M Luetje, Eileen Napoliello, Guinevere F Eden
Arithmetic and written language are uniquely human skills acquired during early schooling and used daily. While prior studies have independently characterized the neural bases for arithmetic and reading, here we examine both skills in a single study to capture their shared and unique cognitive mechanisms, as well as the role of age/experience in modulating their neural representations. We used functional MRI in 7- to 29-year-olds who performed single-digit subtraction, single-digit addition, and single-word reading...
December 2016: NeuroImage
https://www.readbyqxmd.com/read/27549197/developmental-and-evolutionary-origins-of-the-amniote-phallus
#10
Marissa L Gredler
An intromittent phallus is used for sperm transfer in most amniote taxa; however, there is extensive variation in external genital morphology within and among the major amniote clades. Amniote phalluses vary in number (paired, single, or rudimentary), spermatic canal morphology (closed tube or open sulcus), and mode of transition between resting and tumescent states (inflation, rotation, eversion, or muscle relaxation). In a phylogenetic context, these varying adult anatomies preclude a clear interpretation for the evolutionary history of amniote external genitalia; as such, multiple hypotheses have been presented for the origin(s) of the amniote phallus...
October 2016: Integrative and Comparative Biology
https://www.readbyqxmd.com/read/27499121/transcortical-selective-amygdalohippocampectomy-technique-through-the-middle-temporal-gyrus-revisited-an-anatomical-study-laboratory-investigation
#11
Baran Bozkurt, Ricardo da Silva Centeno, Feres Chaddad-Neto, Marcos Devanir Silva da Costa, Marcelo Augusto Acosta Goiri, Ali Karadag, Bekir Tugcu, Talat Cem Ovalioglu, Necmettin Tanriover, Serdar Kaya, Kaan Yagmurlu, Andrew Grande
The anterior temporal lobectomy (ATL) and selective amygdalohippocampectomy (SelAH) have been used for surgical treatment of mesial temporal lobe epilepsy. We examined the comprehensive white matter tract anatomy of the temporal lobe to gain an insight into the trans-middle temporal gyrus, a lateral approach which has been commonly used. The transmiddle temporal gyrus approach was performed in a stepwise manner on cadaveric human heads to examine the traversing white matter pathways through it and the structures located in the temporal horn...
August 4, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/27493591/accessory-inferior-sulci-of-the-liver-in-an-afro-caribbean-population
#12
Shamir O Cawich, Michael T Gardner, Ramnanand Shetty, Neil W Pearce, Vijay Naraynsingh
INTRODUCTION: There have been no previous reports on the anatomic variations that exist on inferior surface of the liver in Caribbean populations. This information is important to optimize radiology and hepatobiliary surgical services in the region. METHODS: Two investigators independently observed 69 cadaveric dissections over five years and described the variations in surface anatomy. RESULTS: In this population 88% of cadaveric livers had conventional hepatic surface anatomy...
June 2016: International Journal of Biomedical Science: IJBS
https://www.readbyqxmd.com/read/27484640/new-congenital-coronary-artery-anomaly-double-supply-of-single-left-anterior-descending-coronary-artery-from-the-left-and-right-coronary-sinuses-a-case-report
#13
Yunis Daralammouri, Malik Ghannam, Bernward Lauer
BACKGROUND: A normal anatomy of coronary arteries is important to have adequate cardiac muscle blood supply especially during extraneous physical activities. This case report describes a rare coronary anomaly in which the accessory coronary artery arose from the right coronary artery, reentered the left anterior descending coronary artery, and then ran as a single vessel. CASE PRESENTATION: We present a case of a coronary anomaly in a 47-year-old white man who presented with atypical angina...
2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27378882/differing-connectivity-of-exner-s-area-for-numbers-and-letters
#14
Elise Klein, Klaus Willmes, Stefanie Jung, Stefan Huber, Lucia W Braga, Korbinian Moeller
There is a growing body of evidence indicating a crucial role of Exner's area in (hand-) writing symbolic codes such as letters and words. However, a recent study reported a patient with a lesion affecting Broca's and Exner's area, who suffered from severe peripheral agraphia for letters but not for Arabic digits. The authors suggested a speculative account postulating differential connectivity of Exner's area for numbers and letters in order to explain this dissociation. In the present study, we evaluated this account, employing atlas-based tractography for the patient's anatomy, deterministic fiber-tracking as well as an automated toolkit to investigate the connectivity of Exner's area in healthy adults...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/27341050/transtentorial-transcollateral-sulcus-approach-to-the-ventricular-atrium-an-endoscope-assisted-anatomical-study
#15
Yasser Jeelani, Abdulkerim Gokoglu, Tomer Anor, Ossama Al-Mefty, Alan R Cohen
OBJECTIVE Conventional approaches to the atrium of the lateral ventricle may be associated with complications related to direct cortical injury or brain retraction. The authors describe a novel approach to the atrium through a retrosigmoid transtentorial transcollateral sulcus corridor. METHODS Bilateral retrosigmoid craniotomies were performed on 4 formalin-fixed, colored latex-injected human cadaver heads (a total of 8 approaches). Microsurgical dissections were performed under 3× to 24× magnification, and endoscopic visualization was provided by 0° and 30° rigid endoscope lens systems...
June 24, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27328121/knee-deformities-in-children-with-down-syndrome-a-focus-on-knee-malalignment
#16
Maria Del Pilar Duque Orozco, Oussama Abousamra, Brian Po-Jung Chen, Kenneth J Rogers, Julieanne P Sees, Freeman Miller
BACKGROUND: Patellofemoral instability (PFI) has been the most reported knee abnormality in people with Down syndrome. Other reported knee abnormalities have been associated with PFI and different management approaches have been described with variable outcomes. The aim of this study was to describe the anatomic variations of the knee in children with Down syndrome. A comparison between knees with and without PFI was performed and our experience in treating knee abnormalities in Down syndrome was also reported...
June 18, 2016: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/27284228/studies-of-the-macroscopic-and-microscopic-morphology-hippocampus-of-brain-in-vencobb-broiler
#17
Shailesh Kumar Gupta, Kumaresh Behera, C R Pradhan, Arun Kumar Mandal, Kamdev Sethy, Dayanidhi Behera, Kuladip Prakash Shinde
AIM: The aim of this study was to study the anatomy of different parts of brain and histology of hippocampus of Vencobb broiler chicken. MATERIALS AND METHODS: A 12 adult experimental birds were sacrificed by cervical dislocation. After separation of the brain, gross anatomy features were studied. Brain tissue was fixed in 10% buffered neutral formalin for 2-3 days, and then routine dehydration process in ascending grades of ethyl alcohol was done. After xylene cleaning, paraffin impregnation was prepared...
May 2016: Veterinary World
https://www.readbyqxmd.com/read/27278629/surgical-anatomy-of-the-right-hepatic-artery-in-rouviere-s-sulcus-evaluated-by-preoperative-multidetector-row-ct-images
#18
Shuichi Aoki, Masamichi Mizuma, Hiroki Hayashi, Kei Nakagawa, Takanori Morikawa, Fuyuhiko Motoi, Takeshi Naitoh, Shinichi Egawa, Michiaki Unno
BACKGROUND: Lymph node dissection in Rouviere's sulcus (RS) is essential during left-sided hepatectomy and caudate lobectomy for hilar cholangiocarcinoma. However, the small segmental or subsegmental arteries (SA/SSA) are often encountered in RS and must be preserved to prevent critical complications, such as liver infarction or liver failure. The aim of this study is to elucidate the anatomy of SA/SSA around RS, which should be understood preoperatively. METHODS: Between January 2008 and April 2013 from a total of 124 consecutive patients with hilar cholangiocarcinoma, preoperative multidetector-row computed tomography (MDCT) images were obtained at our institution and evaluated...
June 8, 2016: BMC Surgery
https://www.readbyqxmd.com/read/27272936/category-selectivity-in-human-visual-cortex-follows-cortical-topology-a-grouped-iceeg-study
#19
Cihan Mehmet Kadipasaoglu, Christopher Richard Conner, Meagan Lee Whaley, Vatche George Baboyan, Nitin Tandon
Neuroimaging studies suggest that category-selective regions in higher-order visual cortex are topologically organized around specific anatomical landmarks: the mid-fusiform sulcus (MFS) in the ventral temporal cortex (VTC) and lateral occipital sulcus (LOS) in the lateral occipital cortex (LOC). To derive precise structure-function maps from direct neural signals, we collected intracranial EEG (icEEG) recordings in a large human cohort (n = 26) undergoing implantation of subdural electrodes. A surface-based approach to grouped icEEG analysis was used to overcome challenges from sparse electrode coverage within subjects and variable cortical anatomy across subjects...
2016: PloS One
https://www.readbyqxmd.com/read/27235714/the-anatomy-of-empathy-vicarious-experience-and-disorders-of-social-cognition
#20
REVIEW
Patricia L Lockwood
Empathy, the ability to vicariously experience and to understand the affect of other people, is fundamental for successful social-cognitive ability and behaviour. Empathy is thought to be a critical facilitator of prosocial behaviour and is disrupted in a number of psychiatric and neurological disorders. Research has begun to uncover the neural basis of such 'vicarious experience', which has been studied as a proxy measure of empathy. Together, these studies have identified portions of the insula and anterior cingulate cortex as critically involved...
September 15, 2016: Behavioural Brain Research
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