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https://www.readbyqxmd.com/read/28642192/applications-of-3d-orbital-computer-assisted-surgery-cas
#1
Paolo Scolozzi
INTRODUCTION: The purpose of the present report is to describe the indications for use of 3D orbital computer-assisted surgery (CAS). PATIENTS AND METHODS: We analyzed the clinical and radiological data of all patients with orbital deformities treated using intra-operative navigation and CAD/CAM techniques at the Hôpitaux Universitaires de Genève, Switzerland, between 2009 and 2016. We recorded age and gender, orbital deformity, technical and surgical procedure and postoperative complications...
June 19, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28612406/previously-undescribed-palpebral-branch-from-the-infraorbital-canal-application-to-surgery-of-the-eyelid-and-treatment-of-orbital-floor-fractures
#2
Joe Iwanaga, Koichi Watanabe, Rod J Oskouian, R Shane Tubbs
INTRODUCTION The sensory innervation of the inferior eyelid is mainly derived from the inferior palpebral branch of the infraorbital nerve. This study aimed to investigate another, to our knowledge, previously unknown branch, and elucidate its location and distribution. MATERIALS AND METHODS Twelve sides from seven fresh frozen cadaveric Caucasian heads were used in this study. The specimens were derived from two male and four female adult cadavers age. The diameter of the inferior palpebral branch of the infraorbital nerve (D1) and branch arising from the upper wall of the infraorbital canal (D2), and distance between the branching points of this branch and the anterior border of the orbit floor (L1) was measured...
June 13, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28603580/in-situ-splitting-of-a-rib-bone-graft-for-reconstruction-of-orbital-floor-and-medial-wall
#3
Tetsuji Uemura, Tetsu Yanai, Masato Yasuta, Yoshimi Harada, Aya Morikawa, Hidetaka Watanabe, Masato Kurokawa
In situ splitting of rib bone graft was conducted in 22 patients for the repair of orbital fracture with no other complicating fractures. A bone graft was harvested from the sixth or seventh rib in the right side. The repair of the orbital floor and medial wall was successful in all the cases. Ten patients had bone grafting to the orbital floor, eight had it done onto medial wall, and 4 onto both floor and wall after reduction. The mean length of in situ rib bone graft was 40.9 mm (range, 20-70 mm), the mean width of these was 14...
June 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28599123/intraoperative-imaging-changes-management-in-orbital-fracture-repair
#4
Vedant Borad, Martin S Lacey, David D Hamlar, Harley S Dresner, Girijesh K Yadava, Warren Schubert
PURPOSE: Intraoperative imaging is gaining widespread use in the management of facial fracture repair. The aim of this study was to determine whether intraoperative imaging changes the management of orbital fracture repair. MATERIALS AND METHODS: A retrospective case series was performed of all cases of orbital fracture repair from 2008 to 2015 in which the intraoperative O-arm was used at Regions Hospital (St Paul, MN), a level I trauma center. The primary outcome variable was a change in management, ranging from orbital plate repositioning to proceeding with orbital floor exploration...
May 15, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28586678/polar-oceans-in-a-changing-climate
#5
David K A Barnes, Geraint A Tarling
Most of Earth's surface is blue or white, but how much of each would depend on the time of observation. Our planet has been through phases of snowball (all frozen), greenhouse (all liquid seas) and icehouse (frozen and liquid). Even during current icehouse conditions, the extent of ice versus water has changed considerably between ice ages and interglacial periods. Water has been vital for life on Earth and has driven and been influenced by transitions between greenhouse and icehouse. However, neither the possession of water nor having liquid and frozen seas are unique to Earth (Figure 1)...
June 5, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28583492/silent-sinus-syndrome-and-maxillary-sinus-atelectasis-in-children
#6
Paolo Farneti, Vittorio Sciarretta, Giovanni Macrì, Ottavio Piccin, Ernesto Pasquini
OBJECTIVE: Silent sinus syndrome (SSS) and chronic maxillary atelectasis (CMA) are unusual conditions having subtle symptoms with a possible progressive evolution. They are particularly infrequent in the pediatric population. Our objective was to review our experience with pediatric patients having SSS or CMA, and to review all cases involving patients under 14 years of age reported in the literature. METHODS: A retrospective review of 6 patients diagnosed with SSS or CMA surgically treated from 2001 to 2014 was carried out...
July 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28582957/a-case-of-organizing-hematoma-in-a-maxillary-sinus-after-reconstruction-of-a-blow-out-fracture
#7
Sang Hee An, Hyoung Min Park, Il Gyu Kang, Joo Hyun Jung
A 36-year-old man presented because of nasal obstruction, rhinorrhea, and postnasal drip. The patient had undergone reconstruction of a blow-out fracture of the orbital floor 12 years before and had sinusitis that likely had resulted from implant migration into the maxillary sinus. The inflammation was successfully resolved, and the implant was removed through a minimally invasive endoscopic sinus surgery technique. On pathologic examination, an organizing hematoma was identified as the cause of the lesion...
June 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28582371/clinical-presentation-and-anatomical-location-of-orbital-plasmacytomas
#8
Bradley A Thuro, Oded Sagiv, Roman Shinder, J Matthew Debnam, Omar Ozgur, John D Ng, Daniel Rootman, Sheeba K Thomas, Bita Esmaeli
PURPOSE: To evaluate the clinical and anatomical location of orbital plasmacytomas and assess local control following therapy. METHODS: The American Society of Ophthalmic Plastic and Reconstructive Surgery Oncology Database was queried to identify patients diagnosed with orbital plasmacytoma. These patients' records were reviewed for demographic characteristics, clinical and radiologic findings, treatments, and outcomes. RESULTS: Thirty patients from 4 institutions (24 from MD Anderson Cancer Center, 3 from SUNY Downstate Medical Center, 2 from University of California, Los Angeles, and 1 from Oregon Health and Science University) were identified...
June 2, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28576607/extensiometric-analysis-of-strain-in-craniofacial-bones-during-implant-supported-palatal-expansion
#9
Carlos Nelson Elias, Daniel Jogaib Fernandes, Denis Souza Zanivan, Yuri Resende Fonseca
Palatal expansion has several orthodontic and orthopedic applications, such as increasing maxillary transverse dimensions and correcting maxillary atresia, oral breathing, and skeletal cross-bites. Little is known about the strain to which craniofacial bones are submitted when a palatal expander is loaded. The objectives of the present work were to propose a new palatal bone-borne titanium device (expansion screw), to determine patterns of strain distribution in craniofacial bones during palatal expansion and to show the clinical results of a new palatal expander supported by implants...
May 25, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28573375/chronic-maxillary-atelectasis-and-silent-sinus-syndrome-two-faces-of-the-same-clinical-entity
#10
Clotilde de Dorlodot, Stephanie Collet, Philippe Rombaux, Mihaela Horoi, Sergio Hassid, Philippe Eloy
Chronic maxillary atelectasis (CMA) and silent sinus syndrome (SSS) are rare clinical entities characterized by an implosion of the maxillary sinus that may or may not be associated with sinonasal symptoms, and are complicated by ipsilateral enophthalmos. The objective of this article is to discuss the definitions, physiopathology, clinical and radiographic characteristics, and surgical management of these entities. We retrospectively reviewed 18 patients (7 women, 11 men, aged 12-70 years) diagnosed and treated in the ear, nose, and throat departments of four Belgian teaching hospitals between 2000 and 2015...
June 1, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28573002/image-based-modelling-of-lateral-magma-flow-the-basement-sill-antarctica
#11
Nick Petford, Seyed Mirhadizadeh
The McMurdo Dry Valleys magmatic system, Antarctica, provides a world-class example of pervasive lateral magma flow on a continental scale. The lowermost intrusion (Basement Sill) offers detailed sections through the now frozen particle microstructure of a congested magma slurry. We simulated the flow regime in two and three dimensions using numerical models built on a finite-element mesh derived from field data. The model captures the flow behaviour of the Basement Sill magma over a viscosity range of 1-10(4) Pa s where the higher end (greater than or equal to 10(2) Pa s) corresponds to a magmatic slurry with crystal fractions varying between 30 and 70%...
May 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28551283/postoperative-nausea-and-vomiting-in-facial-fracture-patients-a-randomized-and-controlled-trial-on-the-effect-of-dexamethasone
#12
A Haapanen, H Thorén, J Törnwall, A L Suominen, J Snäll
This study aimed to establish the incidence of postoperative nausea and vomiting (PONV) in facial fracture patients. The specific aim was to investigate the effect of perioperative dexamethasone on PONV. A total of 119 adult patients with facial fractures were analysed in this prospective study. Patients were randomized to receive perioperatively either a total dose of 30mg of dexamethasone i.v. and i.m., or no glucocorticoid (control). PONV was evaluated every 6hours during the first postoperative 24hours and when pain medications were given...
May 24, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28521351/the-endoscopic-endonasal-transmaxillary-approach-to-meckel-s-cave-through-the-inferior-orbital-fissure
#13
Xin Zhang, Halima Tabani, Ivan El-Sayed, Matthew Russell, Xuequan Feng, Arnau Benet
BACKGROUND: Surgical access to Meckel's Cave (MC) is challenging due to its deep location and surrounding important neurovascular structures. Currently existing endoscopic endonasal (EE) approaches require dissecting near the internal carotid artery (ICA) or require transposition of the pterygopalatine neurovascular bundle. OBJECTIVE: To describe a novel approach to access the anterolateral aspect of the MC using a minimally invasive EE route. METHODS: The EE transmaxillary transinferior orbital fissure approach was simulated in 10 specimens...
June 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28511561/depression-of-the-maxillary-sinus-anterior-wall-and-its-influence-on-panoramic-radiography-appearance
#14
Kazuhito Yoshida, Motoki Fukuda, Kenichi Gotoh, Eiichiro Ariji
OBJECTIVES: To clarify the depression aspect of the maxillary sinus anterior wall and to investigate its relationship with the panoramic image appearance of a diagonal line from the inferior part of the so-called panoramic innominate line to the medial portion of the orbital floor line. METHODS: Based on CT data, panoramic images were simulated for two typical cases with and without anterior wall depression. Next, on axial CT images of 1689 subjects (3378 sinuses) stored in our image database, the wall depths were measured and analyzed for their relationships with the panoramic appearances of the diagonal line, classified into invisible, obscure and clear patterns...
June 20, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28489657/the-pattern-of-orbital-fractures-managed-at-two-referral-centers-in-nairobi-kenya
#15
Wayne Manana, Walter A Odhiambo, Mark L Chindia, Kennedy Koech
Orbital fractures are one of the commonest injuries in mid-face trauma and can lead to significant functional and cosmetic defects. This study was aimed at analyzing the pattern of orbital fractures at 2 referral centers in Nairobi. It was a descriptive prospective hospital-based study of the demographics, etiology, clinico-radiological features, and management modalities among patients presenting with orbital fractures at the University of Nairobi Dental Hospital and Kenyatta National Referral Hospital in Nairobi, Kenya...
June 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28468165/orbital-reconstruction-in-neuroectodermal-tumor-of-the-orbit-multimodal-treatment-approach
#16
Jorge Ernesto Cantini A, Diana M Díaz López, Esteban Francisco Hernandez Florez
INTRODUCTION: Primitive neuroectodermal tumors of peripheral origin are very rare, and orbital neuroectodermal tumors are even more uncommon. Only 25 patients with primary orbital involvement in the pediatric age group have been reported. METHODS: In this article, the authors describe their experience in the multimodality treatment approach to treat neuroectodermal tumor of the orbit. The authors also present a male patient 3-year old presenting with a neuroectodermal tumor of the right orbit causing rapidly progressive proptosis...
May 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28463685/reconstruction-of-maxillary-and-orbital-floor-defect-with-free-fibula-flap-and-whole-individualized-titanium-mesh-assisted-by-computer-techniques
#17
Kun Fu, Yiming Liu, Ning Gao, Jinghua Cai, Wei He, Weiliu Qiu
PURPOSE: We sought to investigate the clinical application of free fibula flap and individualized titanium mesh through the use of a virtual planning and guiding template to assist the reconstruction of maxilla and orbital floor defects. PATIENTS AND METHODS: Between 2015 and 2016, a total of 6 adult patients with maxillary and orbital floor defects were enrolled in this study. Preoperative virtual planning, including virtual maxillary resection and fibular reconstruction, was performed in all cases according to 3-dimensional radiographic and clinical findings...
April 7, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28412263/oculocardiac-reflex-in-an-orbital-fracture-without-entrapment
#18
Timothy C Woernley, Thomas L Wright, Duc N Lam, Jonathon S Jundt
Large orbital fractures in older patients are infrequently associated with an exaggerated oculocardiac reflex. This report describes the case of a patient in his 40s with a large right orbital floor and medial wall fracture without radiographic evidence of extraocular muscle compression or entrapment who developed severe nausea and bradycardia with movement of his affected eye. The patient exhibited bradycardia to 17 beats per minute during the initial examination and was taken urgently to the operating room for reconstruction of the right orbital floor and medial wall...
March 21, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28411135/silent-sinus-syndrome%C3%A2-a-traumatic-case
#19
E Février, C Vandersteen, L Castillo, C Savoldelli
INTRODUCTION: Silent sinus syndrome is an unusual cause of progressive enophthalmos and hypoglobus due to atelectasia of the maxillary sinus associated with osteolysis of the orbital floor. This syndrome is classically idiopathic, but the term is also used to describe traumatic or iatrogenic (surgical orbital decompression) cases. CASE REPORT: We report the case of a 33-year-old man who presented with a left orbital trauma without functional disorder. Computed tomography (CT) scan revealed a nondisplaced fracture of the left orbital floor...
April 11, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28403132/orbital-reconstruction-in-neuroectodermal-tumor-of-the-orbit-multimodal-treatment-approach
#20
Jorge Ernesto Cantini A, Diana M Díaz López, Esteban Francisco Hernandez Florez
INTRODUCTION: Primitive neuroectodermal tumors of peripheral origin are very rare, and orbital neuroectodermal tumors are even more uncommon. Only 25 patients with primary orbital involvement in the pediatric age group have been reported. METHODS: In this article, the authors describe their experience in the multimodality treatment approach to treat neuroectodermal tumor of the orbit. The authors also present a male patient 3-year old presenting with a neuroectodermal tumor of the right orbit causing rapidly progressive proptosis...
April 11, 2017: Journal of Craniofacial Surgery
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