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sulcus anatomy

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https://www.readbyqxmd.com/read/28427385/differences-between-native-and-prosthetic-knees-in-terms-of-cross-sectional-morphology-of-the-femoral-trochlea-a-study-based-on-three-dimensional-models-and-virtual-total-knee-arthroplasty
#1
Zhe Du, Shichang Chen, Mengning Yan, Bing Yue, You Wang
BACKGROUND: The cross-sectional morphology of the prosthetic knee is crucial to understanding patellar motion and quadriceps strength after total knee arthroplasty. However, few comparative evaluations of the cross-sectional morphology of the femoral trochlea have been performed in the native knee and currently available femoral implants, and the relationship between the trochlear anatomy of prosthetic components and post-operative patellofemoral complications remains unclear. We aimed to investigate the differences in cross-sectional morphology of the femoral trochlea between native knees and prosthetic femoral components...
April 20, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28413699/white-matter-connections-of-the-inferior-parietal-lobule-a-study-of-surgical-anatomy
#2
Joshua D Burks, Lillian B Boettcher, Andrew K Conner, Chad A Glenn, Phillip A Bonney, Cordell M Baker, Robert G Briggs, Nathan A Pittman, Daniel L O'Donoghue, Dee H Wu, Michael E Sughrue
INTRODUCTION: Interest in the function of the inferior parietal lobule (IPL) has resulted in increased understanding of its involvement in visuospatial and cognitive functioning, and its role in semantic networks. A basic understanding of the nuanced white-matter anatomy in this region may be useful in improving outcomes when operating in this region of the brain. We sought to derive the surgical relationship between the IPL and underlying major white-matter bundles by characterizing macroscopic connectivity...
April 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28317556/skull-5-from-dmanisi-descriptive-anatomy-comparative-studies-and-evolutionary-significance
#3
G Philip Rightmire, Marcia S Ponce de León, David Lordkipanidze, Ann Margvelashvili, Christoph P E Zollikofer
A fifth hominin skull (cranium D4500 and mandible D2600) from Dmanisi is massively constructed, with a large face and a very small brain. Traits documented for the first time in a basal member of the Homo clade include the uniquely low ratio of endocranial volume to basicranial width, reduced vertex height, angular vault profile, smooth nasal sill coupled with a long and sloping maxillary clivus, elongated palate, and tall mandibular corpus. The convex clivus and receding symphysis of skull 5 produce a muzzle-like form similar to that of Australopithecus afarensis...
March 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28291211/-surgical-anatomy-of-the-peri-insular-association-tracts-part-i-the-superior-longitudinal-fascicle-system
#4
A E Bykanov, D I Pitskhelauri, A I Batalov, I N Pronin, M A Shkarubo, G F Dobrovol'sky, G L Kobyakov, S B Buklina, V L Puchkov, N E Zakharova, A S Smirnov, A Z Sanikidze, D A Gol'bin, E L Pogosbekyan, E S Kudieva, A M Shkatova, A A Potapov
AIM: To study the peri-insular association tract anatomy and define the permissible anatomical boundaries for resection of glial insular tumors with allowance for the surgical anatomy of the peri-insular association tracts. MATERIAL AND METHODS: In an anatomic study of the superior longitudinal fascicle system (SLF I, SLF II, SLF III, arcuate fascicle), we used 12 anatomical specimens (6 left and 6 right hemispheres) prepared according to the Klingler's fiber dissection technique...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28281470/the-anatomy-of-rouviere-s-sulcus-as-seen-during-laparoscopic-cholecystectomy-a-proposed-classification
#5
Mohinder Singh, Neeraj Prasad
INTRODUCTION: Although Rouviere's sulcus is being increasingly mentioned as the first landmark to be seen so as to begin dissection during laparoscopic cholecystectomy to prevent bile duct injuries, the anatomy of the sulcus has not been described in clear and simple terms. OBJECTIVES: To define the detailed anatomy of Rouviere sulcus as seen during laparoscopic surgery in simple terms for the surgeons to refer to and begin their dissection from this, always staying above this sulcus in order to eliminate bile duct injury...
April 2017: Journal of Minimal Access Surgery
https://www.readbyqxmd.com/read/28213639/prechiasmatic-sulcus-and-optic-strut-an-anatomic-study-in-dry-skulls
#6
Vasiliki Kanellopoulou, Evgenia Efthymiou, Vasiliki Thanopoulou, Dimitra Kozompoli, Dimitrios Mytilinaios, Maria Piagkou, Elizabeth O Johnson
BACKGROUND: Although safe surgical access to the cavernous sinus is related to understanding the anatomical and ethnic variants of the prechiasmatic sulcus and the optic strut, there remains a paucity of studies of the morphology and the bony relationships in the region. The present study provides a systematic morphological and morphometric analysis of the sulcal region and the optic strut anatomy and their relations in a Greek population. METHODS: The interoptic distance, length of planum sphenoidale, sulcal length and sulcal angle was determined in 96 Greek adult dry skulls...
February 17, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28187210/reappraisal-of-the-envenoming-capacity-of-euchambersia-mirabilis-therapsida-therocephalia-using-%C3%AE-ct-scanning-techniques
#7
Julien Benoit, Luke A Norton, Paul R Manger, Bruce S Rubidge
Euchambersia mirabilis is an iconic species of Permo-Triassic therapsid because of its unusually large external maxillary fossa linked through a sulcus to a ridged canine. This anatomy led to the commonly accepted conclusion that the large fossa accommodated a venom gland. However, this hypothesis remains untested so far. Here, we conducted a μCT scan assisted reappraisal of the envenoming capacity of Euchambersia, with a special focus on the anatomy of the maxillary fossa and canines. This study shows that the fossa, presumably for the venom-producing gland, is directly linked to the maxillary canal, which carries the trigeminal nerve (responsible for the sensitivity of the face)...
2017: PloS One
https://www.readbyqxmd.com/read/27997448/the-retroauricular-approach-to-the-facial-nerve-trunk
#8
Jordan W Swanson, Jason W Yu, Jesse A Taylor, Stephen Kovach, Suhail Kanchwala, Laurent Lantieri
BACKGROUND: Exposure of the common trunk of the facial nerve has traditionally been approached based on principles of parotidectomy, which is associated with high rates of facial nerve palsy and landmarks that may be unreliable. On the basis of experience gained with vascularized composite allotransplantation of the face, the authors propose a retroauricular approach that may be more time-effective and safe. METHODS: In the proposed retroauricular facial nerve approach, an incision is made posterior to the ear in the retroauricular sulcus, and dissection proceeds anteriorly to the mastoid fascia to the base of the conchal bowl...
March 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27989972/frontal-lobe-decortication-frontal-lobectomy-with-ventricular-preservation-in-epilepsy-part-1-anatomic-landmarks-and-surgical-technique
#9
Hung Tzu Wen, Leila Maria Da Róz, Albert L Rhoton, Luiz Henrique Martins Castro, Manoel Jacobsen Teixeira
BACKGROUND: An extensive frontal resection is a frequently performed neurosurgical procedure, especially for treating brain tumor and refractory epilepsy. However, there is a paucity of reports available regarding its surgical anatomy and technique. OBJECTIVES: We sought to present the anatomic landmarks and surgical technique of the frontal lobe decortication (FLD) in epilepsy. The goals were to maximize the gray matter removal, spare primary and supplementary motor areas, and preserve the frontal horn...
February 2017: World Neurosurgery
https://www.readbyqxmd.com/read/27932858/one-stage-bone-strip-reconstruction-technique-with-balloon-sinus-dilatation-surgery-for-chronic-maxillary-atelectasis
#10
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
#11
Christian Mehl, Volker Gassling, 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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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...
December 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
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