13,274 results match your criteria Orbit Anatomy


A design process for a 3D printed patient-specific applicator for HDR brachytherapy of the orbit.

3D Print Med 2020 Jun 29;6(1):15. Epub 2020 Jun 29.

Department of Radiation Oncology, Duke University Medical Center, Durham, NC, USA.

Background: This report describes a process for designing a 3D printed patient-specific applicator for HDR brachytherapy of the orbit.

Case Presentation: A 34-year-old man with recurrent melanoma of the orbit was referred for consideration of re-irradiation. An applicator for HDR brachytherapy was designed based on the computed tomography (CT) of patient anatomy. Read More

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http://dx.doi.org/10.1186/s41205-020-00068-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7322888PMC

Endoscopic endonasal intraconal orbit surgery.

World J Otorhinolaryngol Head Neck Surg 2020 Jun 25;6(2):100-105. Epub 2019 Oct 25.

Massachusetts Eye and Ear Infirmary, Department of Otolaryngology, Harvard Medical School, Boston, MA, USA.

Endoscopic endonasal orbital surgery is evolving. With increasing knowledge, expertise, and technology, the historical limits of the endonasal endoscopic approach to the orbit have been redefined. This review discusses the clinical presentation and etiology, and highlights the pertinent anatomy, and discusses the diagnostic workup and surgical approach to orbital tumors and post-operative care. Read More

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http://dx.doi.org/10.1016/j.wjorl.2019.07.001DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7296506PMC

The Functional Anatomy of the Ophthalmic Angiosome and its Implications in Blindness as a Complication of Cosmetic Facial Filler Procedures.

Plast Reconstr Surg 2020 Jun 22. Epub 2020 Jun 22.

Introduction: Blindness following facial filler procedures, although rare, is devastating, usually acute, permanent, and attributed to an ophthalmic artery embolus. However, blindness may be delayed for up to 2 weeks, sometimes follows injection at remote sites, suggesting alternative pathways and pathogenesis.

Methodology: Seeking solutions, fresh cadaver radiographic lead oxide injection, dissection and histology studies of the orbital and facial pathways of the ophthalmic angiosome, performed by isolated ophthalmic artery, vein, together and facial artery perfusions, were combined with total body archival arterial and venous investigations. Read More

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http://dx.doi.org/10.1097/PRS.0000000000007155DOI Listing

Does endoscopic sinus surgery alter the biomechanics of the orbit?

J Otolaryngol Head Neck Surg 2020 Jun 26;49(1):44. Epub 2020 Jun 26.

Department of Otolaryngology - Head & Neck Surgery, Division of Facial Plastic & Reconstructive Surgery, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada.

Objective: The purpose of this study is to determine if removal of ethmoid cell septations as commonly performed in endoscopic sinus surgery leads to a change in orbital wall fracture patterns and the force required to create them.

Methods: Six fresh-frozen cadaveric heads were acquired and underwent endoscopic uncinectomy, maxillary antrostomy, and anterior and posterior ethmoidectomy on one, randomized, side. The contralateral sinuses were used as intra-specimen control. Read More

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http://dx.doi.org/10.1186/s40463-020-00442-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7318533PMC

From yellow to silver: Transforming cranial morphology in European eel (Anguilla anguilla).

J Anat 2020 Jun 24. Epub 2020 Jun 24.

Department of Biology, Evolutionary Morphology of Vertebrates, Ghent University, Ghent, Belgium.

The European eel (Anguilla anguilla) has been extensively studied, especially because of its highly specialized migratory behaviour associated with substantial phenotypic transformations. During this migration, one of those transformations the eel undergoes is from yellow to silver eel, a process known as silvering. Although the cranial morphology during the earlier glass, elver and yellow eel stages are well studied, little is known about actual morphological changes during the transformation process from the yellow to the silver eel stage. Read More

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http://dx.doi.org/10.1111/joa.13259DOI Listing

Imaging of Paranasal Sinus Infections in Children: A Review.

J Neuroimaging 2020 May 30. Epub 2020 May 30.

Edward B. Singleton Department of Radiology, Texas Children's Hospital, Houston, TX.

Paranasal sinuses (PNS) infections are common in children. They may cause common and well-known complications, but also, unusual and potentially devastating complications. Diagnosing PNS infections and complications in children requires knowledge of the unique anatomy of the nasal cavity and the PNS. Read More

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http://dx.doi.org/10.1111/jon.12737DOI Listing

C-arm orbits for metal artifact avoidance (MAA) in cone-beam CT.

Phys Med Biol 2020 May 19. Epub 2020 May 19.

Department of Biomedical Engineering, Johns Hopkins University, School of Medicine, Baltimore, MD 21205, USA, Baltimore, 21205, UNITED STATES.

Purpose: Metal artifacts present a challenge to cone-beam CT (CBCT) image-guided surgery, obscuring visualization of metal instruments and adjacent anatomy. We present a method to reduce the influence of metal artifacts by prospectively defining an C-arm source-detector orbit that mitigates metal-induced biases in the projection data.

Methods: The metal artifact avoidance (MAA) method is compatible with simple mobile C-arms, does not require exact prior information on the patient or metal implants, and is consistent with more advanced polyenergetic model-based image reconstruction, and metal artifact reduction (MAR) post-processing methods. Read More

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http://dx.doi.org/10.1088/1361-6560/ab9454DOI Listing

Application of holographic augmented reality for external approaches to the frontal sinus.

Int Forum Allergy Rhinol 2020 Jul 3;10(7):920-925. Epub 2020 May 3.

Department of Otolaryngology-Head & Neck Surgery, Stanford University School of Medicine, Stanford, CA.

Background: External approaches to the frontal sinus such as osteoplastic flaps are challenging because they require blind entry into the sinus, posing risks of injury to the brain or orbit. Intraoperative computed tomography (CT)-based navigation is the current standard for planning the approach, but still necessitates blind entry into the sinus. The aim of this work was to describe a novel technique for external approaches to the frontal sinus using a holographic augmented reality (AR) application. Read More

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http://dx.doi.org/10.1002/alr.22546DOI Listing

Anatomical variations and innervation patterns of the superior oblique muscle.

Ann Anat 2020 Jul 25;230:151522. Epub 2020 Apr 25.

Department of Normal and Clinical Anatomy, Chair of Anatomy and Histology, Medical University of Lodz, Poland.

Goal: The location and anatomical relationships of the superior oblique muscle make surgical intervention difficult. The aim of the present paper was therefore to supplement existing anatomical descriptions of this muscle. Its anatomical variability is particularly emphasized, including variations in muscle and tendon size and details of the innervation pattern. Read More

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http://dx.doi.org/10.1016/j.aanat.2020.151522DOI Listing

Prevalence of Dangerous Ethmoid in a Tertiary Center in Eastern Nepal.

JNMA J Nepal Med Assoc 2019 Sep-Oct;57(219):311-314

Department of Otolaryngology, BP Koirala Institute of Health Sciences, Dharan, Nepal.

Introduction: Endoscopic sinus surgery is a well-known approach for sino-nasal pathologies. Due to close proximity to the brain and orbit, the surgeon should be aware of the sino-nasal anatomy and its associated variations. Detailed preoperative assessment of the sinus computed tomography scans reduces the frequency of severe complications in patients undergoing an endoscopic sinus surgery. Read More

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The supraorbital and supratrochlear nerves for ipsilateral corneal neurotization: anatomical study.

Anat Cell Biol 2020 Mar 31;53(1):2-7. Epub 2019 Mar 31.

Seattle Science Foundation, Seattle, WA, USA.

Neurotrophic keratitis is a rare corneal disease that is challenging to treat. Corneal neurotization (CN) is among the developing treatments that uses the supraorbital (SON) or supratrochlear (STN) nerve as a donor. Therefore, the goal of this study was to provide the detailed anatomy of these nerves and clarify their feasibility as donors for ipsilateral CN. Read More

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http://dx.doi.org/10.5115/acb.19.147DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7118260PMC

MR-Eye: High-Resolution Microscopy Coil MRI for the Assessment of the Orbit and Periorbital Structures, Part 1: Technique and Anatomy.

AJNR Am J Neuroradiol 2020 Jun 2;41(6):947-950. Epub 2020 Apr 2.

Department of Clinical Radiology (I.A.Z.), Ninewells Hospital, Dundee, United Kingdom.

Microscopy coil MR imaging of the orbits has been described previously as a technique for anatomic depiction. In the first part of this 2-part series, the improvement in spatial resolution that the technique offers compared with conventional MR imaging of the orbits is demonstrated. We provide a guide to implementing the technique, sharing pearls and pitfalls gleaned from our own practice to make implementation of microscopy coil MR imaging at your own center easy. Read More

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http://dx.doi.org/10.3174/ajnr.A6495DOI Listing

Subtotal Exenteration of the Orbit for Benign Orbital Disease.

J Craniofac Surg 2020 Mar 27. Epub 2020 Mar 27.

Department of Ophthalmology.

Purpose: Total exenteration of the orbit with removal of the eye globe and surrounding tissues is most frequently indicated for malignant tumors. The indications for exenteration of the orbit for benign orbital lesion are rare. Not adequately treated infection of the orbit by systemic antibiotics can lead to destructive changes of soft tissues in the region of the orbit and partial exenteration with eyelid sparing technique is necessary. Read More

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http://dx.doi.org/10.1097/SCS.0000000000006357DOI Listing

Single-Step Resection of Sphenoorbital Meningiomas and Orbital Reconstruction Using Customized CAD/CAM Implants.

J Neurol Surg B Skull Base 2020 Apr 1;81(2):142-148. Epub 2019 Mar 1.

Center for Neurosurgery, University Hospital of Cologne, Cologne, Germany.

 Computer-aided design and manufacturing (CAD/CAM) implants are fabricated based on volumetric analysis of computed tomography (CT) scans and are routinely used for the reconstruction of orbital fractures. We present three cases of patients with sphenoorbital meningiomas that underwent tumor resection, orbital decompression, and orbital reconstruction with patient specific porous titanium or acrylic implants in a single procedure.  The extent of bone resection of the sphenoorbital meningiomas was planned in a virtual three-dimensional (3D) environment using preoperative thin-layer CT data. Read More

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http://dx.doi.org/10.1055/s-0039-1681044DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7082166PMC

MICROSURGICAL ANATOMY REVIEW OF BIFRONTAL LIMITED TRANSBASAL APPROACH - QUANTITATIVE AND ANATOMY STUDY.

World Neurosurg 2020 Feb 27. Epub 2020 Feb 27.

Institute of Neurological Sciences (ICNE), São Paulo. Praça Amadeu Amaral, 27 - 5º andar - Bela Vista, São Paulo, Brazil; Department of Neurosurgery and Microsurgical Anatomy. Hospital Beneficência Portuguesa, R. Maestro Cardim, 769 - Bela Vista, São Paulo, Brazil.; Adjunct Associate Professor at the Department of Neurosurgery. Mayo Clinic, Jacksonville, Florida, United States.

Introduction: The bifrontal transbasal approach is an anterior midline skull base approach to anterior skull base, sellae region and if needed to posterior skull base in the midline, often used for tumoral lesions but also useful for vascular of infectious pathologies.

Materials And Methods: Descriptive anatomical study, 5 formalin-fixed human cadaveric heads were used injected with colored silicone. The dissection was made step-by-step to describe every anatomical structure encountered. Read More

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http://dx.doi.org/10.1016/j.wneu.2020.02.114DOI Listing
February 2020

Classification for treatment urgency for the microphthalmia/anophthalmia spectrum using clinical and biometrical characteristics.

Acta Ophthalmol 2020 Feb 25. Epub 2020 Feb 25.

Department of Ophthalmology, Amsterdam Orbital Center, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands.

Purpose: Current clinical classifications do not distinguish between the severity of the MICrophthalmia/Anophthalmia (MICA) spectrum with regard to treatment urgency. We aim to provide parameters for distinguishing mild, moderate and severe MICA using clinical and biometrical characteristics.

Methods: We performed a single-centre, cross-sectional analysis of prospective cohort of 58 MICA children from September 2013 to February 2018 seen at the Amsterdam University Medical Center, The Netherlands. Read More

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http://dx.doi.org/10.1111/aos.14364DOI Listing
February 2020

Characteristics of Hyaluronan Synthesis Inhibition by 4-Methylumbelliferone in Orbital Fibroblasts.

Invest Ophthalmol Vis Sci 2020 02;61(2):27

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Purpose: Hyaluronan (HA) overproduction by orbital fibroblasts (OFs) is a major factor in the pathogenesis of Graves' orbitopathy (GO). 4-methylumbelliferone (4-MU) is an inhibitor of HA synthesis in different cell types in vitro and has beneficial effects in animal models of autoimmune diseases.

Methods: HA production and mRNA expression of HA synthases (HAS1, HAS2, and HAS3) and hyaluronidases (HYAL1 and HYAL2) were measured in the presence and absence of 4-MU in unstimulated and transforming growth factor-β-stimulated fibroblasts from GO orbital (n = 4), non-GO orbital (n = 4), and dermal origin (n = 4). Read More

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http://dx.doi.org/10.1167/iovs.61.2.27DOI Listing
February 2020

Anatomical study on branching pattern and variations of orbital segment of the oculomotor nerve.

Folia Morphol (Warsz) 2020 Feb 19. Epub 2020 Feb 19.

Department of Normal and Clinical Anatomy, Chair of Anatomy and Histology, Medical University of Lodz, Poland.

Background: This study aims to revisit the anatomy of orbital segment of the CN III. The study also involved morphometric measurements of CN III muscular branches. Detailed description of observed anatomical variations and their incidence was also included. Read More

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http://dx.doi.org/10.5603/FM.a2020.0017DOI Listing
February 2020

The sphenozygomatic fissure.

Folia Morphol (Warsz) 2020 Feb 19. Epub 2020 Feb 19.

"Carol Davila" University of Medicine and Pharmacy of Bucharest, Romania.

The lateral (temporal) wall of the orbit separates it from the temporal fossa and the anterior part of the temporal muscle. Within this wall, the sphenozygomatic suture joins the greater wing of the sphenoid bone and the zygomatic bone. We retrospectively documented in cone beam computed tomography the anatomy of the orbit in a 56 y. Read More

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http://dx.doi.org/10.5603/FM.a2020.0018DOI Listing
February 2020

Fat Grafting for Facial Rejuvenation.

Semin Plast Surg 2020 Feb 15;34(1):30-37. Epub 2020 Feb 15.

Department of Surgery, Division of Plastic Surgery, Michael E. DeBakey, Baylor College of Medicine, Houston, Texas.

For optimal results, facial rejuvenation procedures should address both the tissue laxity and volume deflation associated with facial aging. The lift-and-fill face lift, in which fat grafting provides volumetric rejuvenation to the face while surgical lift effectively repositions and removes ptotic and redundant tissue, has revolutionized the plastic surgeon's approach to the aged face. An understanding of the intricate anatomy of distinct facial fat compartments and a systematic method to assess areas of fat atrophy and volume depletion are keys to provide patients with a natural and youthful result. Read More

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http://dx.doi.org/10.1055/s-0039-3402767DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7023965PMC
February 2020

Extraoral anatomy in CBCT – a literature review. Part 2: Zygomatico-orbital region

Swiss Dent J 2020 Feb;130(2):126-138

Oral and Maxillofacial Radiology, Applied Oral Sciences, Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, Hong Kong SAR, China

This second article about extraoral anatomy as seen in cone beam computed tomography (CBCT) images presents a literature review of the zygomatico-orbital region. The latter bounds the maxillary sinus superiorly and laterally. Since pathologic changes of the maxillary sinus are a frequent indication for three-dimensional radiography, the contiguous orbital cavity and the zygomatic bone may become visible on CBCT scans. Read More

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February 2020

Orbit Image Analysis: An open-source whole slide image analysis tool.

PLoS Comput Biol 2020 02 5;16(2):e1007313. Epub 2020 Feb 5.

Scientific Computing Biology, Idorsia Pharmaceuticals Ltd, Allschwil, Switzerland.

We describe Orbit Image Analysis, an open-source whole slide image analysis tool. The tool consists of a generic tile-processing engine which allows the execution of various image analysis algorithms provided by either Orbit itself or from other open-source platforms using a tile-based map-reduce execution framework. Orbit Image Analysis is capable of sophisticated whole slide imaging analyses due to several key features. Read More

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http://dx.doi.org/10.1371/journal.pcbi.1007313DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7028292PMC
February 2020

A study on morphology and morphometric parameters on skull of the Bardhoka autochthonous sheep breed in Kosovo.

Anat Histol Embryol 2020 May 5;49(3):365-371. Epub 2020 Feb 5.

Faculty of Agriculture and Veterinary, University of Prishtina, Prishtina, Kosovo.

In this study, we aim to investigate the skull of Bardhoka sheep, which is the native breed of Kosovo by utilising normal morphometric methods. Differences between male and female were also statistically analysed. Further, the parameters that can be used in gender discrimination were also analysed. Read More

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http://dx.doi.org/10.1111/ahe.12538DOI Listing

Clinical findings of traumatic proptosis in small-breed dogs and complications associated with globe replacement surgery.

Open Vet J 2019 10 4;9(3):222-229. Epub 2019 Aug 4.

Department of Small Animal Surgery and Ophthalmology, Faculty of Veterinary Medicine, Cairo University, Cairo, Egypt.

Background: Proptosis is a serious traumatic disease commonly affecting small breed dogs and possibly causing loss of vision, with globe replacement surgery (GRS) being essential in most of the cases after stabilizing the patient's condition.

Aim: To determine the common dog breeds and clinical findings associated with traumatic proptosis and demonstrate the short-term complications following GRS.

Methods: The study was performed on 15 client-owned small-breed dogs presented with unilateral traumatic proptosis. Read More

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http://dx.doi.org/10.4314/ovj.v9i3.6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6794399PMC
October 2019

Strabismus in Unicoronal Craniosynostosis: Effect of Orbital Dysmorphology and Fronto-Orbital Advancement and Remodeling.

Plast Reconstr Surg 2020 Feb;145(2):382e-390e

Philadelphia, Pa. From the Division of Plastic Surgery, Hospital of the University of Pennsylvania and Children's Hospital of Philadelphia.

Background: The purpose of this study was to determine what craniometric changes occur to both orbits of unicoronal craniosynostosis patients undergoing fronto-orbital advancement and remodeling, and which of these changes are associated with new onset of postoperative strabismus.

Methods: A retrospective analysis was performed of the preoperative and postoperative orbits of 24 unicoronal craniosynostosis patients and the orbits of 24 control subjects, totaling 144 orbits. Eight parameters were evaluated using multivariate logistic regression analysis. Read More

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http://dx.doi.org/10.1097/PRS.0000000000006479DOI Listing
February 2020

Surgical anatomy of the internal carotid plexus branches to the abducens nerve in the cavernous sinus.

Clin Neurol Neurosurg 2020 Apr 21;191:105690. Epub 2020 Jan 21.

Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, LA, USA; Department of Anatomical Sciences, St. George's University, St. George's, Grenada; Department of Structural and Cellular Biology, Tulane University School of Medicine, New Orleans, LA, USA; Department of Neurosurgery and OchsnerNeuroscience Institute, Ochsner Health System, New Orleans, LA, USA.

Objective: Sympathetic branches to the abducens nerve derived from the internal carotid artery sympathetic plexus, while in the cavernous sinus, have been scantly described in the extant literature. Therefore, the present cadaveric study was performed to better elucidate this anatomy.

Patients And Methods: Eighteen cadaveric sides underwent dissection. Read More

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http://dx.doi.org/10.1016/j.clineuro.2020.105690DOI Listing

Anatomy of the skull in the capybara (Hydrochoerus hydrochaeris) using radiography and 3D computed tomography.

Anat Histol Embryol 2020 May 25;49(3):317-324. Epub 2020 Jan 25.

School of Veterinary Medicine and Animal Science, Graduate Program in Wild Animals, São Paulo State University (UNESP), Botucatu, Brazil.

The capybaras (Hydrochoerus hydrochaeris) are the largest rodent found throughout South America and are present in almost all the Brazilian territory, however, still lack basic descriptions about the species, such as about their cranial anatomy. This study was carried out to investigate the anatomical features in the capybara skull. Eight skulls and two heads, without sexual distinction, were used for the osteological, radiographic and tomographic identification of their structures. Read More

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http://dx.doi.org/10.1111/ahe.12531DOI Listing

Intraconal Anatomy of the Anterior Ethmoidal Neurovascular Bundle: Implications for Surgery in the Superomedial Orbit.

Am J Rhinol Allergy 2020 May 23;34(3):394-400. Epub 2020 Jan 23.

Department of Otolaryngology-Head and Neck Surgery, The James Cancer Hospital at the Wexner Medical Center of The Ohio State University, Columbus, Ohio.

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http://dx.doi.org/10.1177/1945892420901630DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7273756PMC

Aging of the bony orbit in East Asians: a three-dimensional computed tomographic study.

Surg Radiol Anat 2020 May 20;42(5):617-626. Epub 2020 Jan 20.

Department of Anatomy, College of Medicine, Chung-Ang University, Seoul, Republic of Korea.

Purpose: The purpose of this study was to evaluate age-related changes of orbital rim in Koreans and construct a reference data set for the aging phenomenon in Asians.

Methods: Data were collected from computed tomography (CT) scans of orbits and facial bones obtained from 107 Korean (55 males and 52 females) at intervals of 0.60 mm. Read More

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http://dx.doi.org/10.1007/s00276-019-02410-9DOI Listing

[Reconstruction of orbital floor defect with preserved orbital contents after advanced maxillary sinus cancer resection].

Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2020 Jan;55(1):29-33

Department of Otorhinolaryngology Head and Neck Surgery, Shandong First Medical University Affiliated Shandong Provincial Hospital, Jinan 250022, China.

To analyze the method and effect of reconstruction of the orbital floor defect with preserved orbital contents after advanced maxillary sinus cancer resection. Thirty-three patients of T3/T4 stage maxillary sinus cancer with orbital invasion who were treated in Shandong Provincial Hospital from January 2010 to October 2016 were retrospectively analyzed, including 20 males and 13 females, aged from 12 to 80 years old. Patients were treated with appropriate surgical methods according to their clinical manifestation, imaging finding, invasion range, preoperative and intraoperative pathology. Read More

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http://dx.doi.org/10.3760/cma.j.issn.1673-0860.2020.01.006DOI Listing
January 2020

Intraoral Approach for Surgical Treatment of Psammomatoid Juvenile Ossifying Fibroma.

J Craniofac Surg 2020 May/Jun;31(3):e306-e309

Department of Oral and Maxillofacial Surgery, School of Dentistry, University of Pernambuco, Recife.

Psammomatoid juvenile ossifying fibroma (PJOF) is a rare benign tumor that usually affects the paranasal sinuses, orbit, and skull. In most cases, extensive incisions are necessary for full access to the tumor site. The aim of this paper is to report a case of extensive PJOF in which an intraoral surgical approach was performed with complete excision of the tumor. Read More

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http://dx.doi.org/10.1097/SCS.0000000000006171DOI Listing
January 2020

Quantification of effective orbital volume and its association with axial length of the eye. A 3D-MRI study.

Rom J Ophthalmol 2019 Oct-Dec;63(4):360-366

Department of Ophthalmology, University Hospital of Heraklion, Crete, Greece.

To measure the effective orbital volume (EOV) from magnetic resonance images, and investigate its relationship with axial length (AL) in those parameters. Cross-sectional, 3D-MRI study. 54 eyes of 54 patients (25 males) were included in this work. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6943286PMC

Whale tear glands in the bowhead and the beluga whales: Source and function.

J Morphol 2020 03 6;281(3):316-325. Epub 2020 Jan 6.

Department of Anatomy and Neurobiology, Northeast Ohio Medical University, Rootstown, Ohio.

Orbital glands are found in many tetrapod vertebrates, and are usually separate structures, consisting of individual glands lying in the eyelids and both canthi of the orbit. In cetaceans, however, the orbital glandular units are less distinct and have been described by numerous authors as a single, periorbital mass. There are few histochemical and immunhistochemical studies to date of these structures. Read More

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http://dx.doi.org/10.1002/jmor.21099DOI Listing

Punctal dilatation and non-incisional canalicular curettage in the management of infectious canaliculitis.

Orbit 2020 Jan 3:1-5. Epub 2020 Jan 3.

Govindram Seksaria Institute of Dacryology, L.V. Prasad Eye Institute, Hyderabad, India.

: To describe the outcomes of punctal dilatation and non-incisional canalicular curettage in patients with infectious canaliculitis.: A retrospective analysis of 53 canaliculi of 47 eyes of 46 consecutive patients diagnosed with canaliculitis was performed from November 2015 to December 2018. All patients were treated with punctal dilatation and a non-incisional canalicular curettage. Read More

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http://dx.doi.org/10.1080/01676830.2019.1704797DOI Listing
January 2020

Location of the infraorbital foramen with reference to soft tissue landmarks for regional nerve blocks during midface surgery.

Clin Anat 2020 Jan 1. Epub 2020 Jan 1.

Department of Anatomy, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Republic of Korea.

Purpose: An infraorbital nerve (ION) block is widely used to accomplish regional anesthesia during surgical procedures involving the midface region. This study aimed to elucidate the exact location of the infraorbital foramen (IOF) in relation to clinically useful soft-tissue landmarks for achieving an effective ION block.

Methods: Forty-three hemifaces from 23 embalmed Korean cadavers were dissected. Read More

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http://dx.doi.org/10.1002/ca.23556DOI Listing
January 2020

Anatomic Variability of the Human Orbit.

J Oral Maxillofac Surg 2020 May 5;78(5):782-796. Epub 2019 Dec 5.

Director, Oral Maxillofacial Surgery, Dallas Veterans Affairs Hospital, Dallas, TX.

Purpose: Knowledge of the bony orbit and how its volume changes are clinically important in addressing traumatic injuries. Restoration of orbital volume in some patients is critical to achieving successful outcomes after such injuries. In this large cadaveric study, we aimed to assess the average volume, range of bony orbit volumes, degree of volume discrepancy between the right and left orbits, and percentage of skulls with 1- and 1. Read More

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http://dx.doi.org/10.1016/j.joms.2019.11.032DOI Listing

Retrospective analysis of fractionated intensity-modulated radiotherapy (IMRT) in the interdisciplinary management of primary optic nerve sheath meningiomas.

Radiat Oncol 2019 Dec 27;14(1):240. Epub 2019 Dec 27.

Department of Radiation Oncology, Eberhard-Karls-University Tuebingen, Hoppe-Seyler-Str. 3, 72076, Tuebingen, Germany.

Background: As optic nerve sheath meningiomas (ONSM) are rare, there are no prospective studies. Our retrospective analysis focusses on a cohort of patients with uniform disease characteristics all treated with the same radiotherapy regimen. We describe treatment decision making, radiotherapy planning and detailed neuro-ophthalmological outcome of the patients. Read More

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http://dx.doi.org/10.1186/s13014-019-1438-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6935075PMC
December 2019

Supraorbital vs Endo-Orbital Routes to the Lateral Skull Base: A Quantitative and Qualitative Anatomic Study.

Oper Neurosurg (Hagerstown) 2018 11;15(5):567-576

Division of Neurosurgery, Department of Neurosciences, Reproductive and Odon-tostomatological Sciences, Univers-itá degli Studi di Napoli Federico II, Naples, Italy.

Background: Various extensions of the supraorbital approach reach the lateral and parasellar middle cranial fossa regions by removing the orbital rim and greater/lesser sphenoid wings. Recent proposals of a purely endoscopic ventral transorbital pathway to these regions heighten the need to compare these surgical windows.

Objective: To detail the lateral and parasellar middle cranial fossa regions and quantify exposures by 2 surgical windows (transcranial and transorbital) through anatomic study. Read More

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http://dx.doi.org/10.1093/ons/opx256DOI Listing
November 2018

Restoration of the inferomedial orbital strut using a standardized three-dimensional printing implant.

J Anat 2020 May 18;236(5):923-930. Epub 2019 Dec 18.

Department of Plastic and Reconstructive Surgery, College of Medicine, Catholic University of Korea, Seoul, Korea.

The inferomedial orbital strut (IOS) is the thin bony junction of the orbital medial wall and floor. Its fracture is common and leads to serious complications, including enophthalmos, globe dystopia and diplopia. However, anatomical restoration of the IOS is challenging owing to reduced structural support; sound anatomical background and accurate implants are therefore essential. Read More

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http://dx.doi.org/10.1111/joa.13136DOI Listing

A Study of the Head during Prenatal and Perinatal Development of Two Fetuses and One Newborn Striped Dolphin (, Meyen 1833) Using Dissections, Sectional Anatomy, CT, and MRI: Anatomical and Functional Implications in Cetaceans and Terrestrial Mammals.

Animals (Basel) 2019 Dec 13;9(12). Epub 2019 Dec 13.

Departamento de Anatomía y Anatomía Patológica Comparadas, Facultad de Veterinaria, Universidad de Murcia, 30100 Murcia, Spain.

Our objective was to analyze the main anatomical structures of the dolphin head during its developmental stages. Most dolphin studies use only one fetal specimen due to the difficulty in obtaining these materials. Magnetic resonance imaging (MRI) and computed tomography (CT) of two fetuses (younger and older) and a perinatal specimen cadaver of striped dolphins were scanned. Read More

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http://dx.doi.org/10.3390/ani9121139DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6941167PMC
December 2019

Anatomical variations of the ciliary ganglion with an emphasis on the location in the orbit.

Authors:
Robert Haładaj

Anat Sci Int 2020 Mar 16;95(2):258-264. Epub 2019 Dec 16.

Department of Normal and Clinical Anatomy, Chair of Anatomy and Histology, Medical University of Lodz, ul. Żeligowskiego 7/9, 90-752, Łódź, Poland.

The ciliary ganglion is of outmost physiological importance, due to its involvement in pupillary light reflex circuits. The ciliary ganglion may be damaged during surgical procedures. Therefore, the aim of the study was to examine the anatomical variations of the ganglion with an emphasis in location in the orbit. Read More

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http://dx.doi.org/10.1007/s12565-019-00518-xDOI Listing

An accurate interactive segmentation and volume calculation of orbital soft tissue for orbital reconstruction after enucleation.

BMC Ophthalmol 2019 Dec 16;19(1):256. Epub 2019 Dec 16.

Department of Ophthalmology, the Second Affiliated Hospital of Zhejiang University, College of Medicine, No. 88 Jiefang Road, Hangzhou, 310009, Zhejiang Province, China.

Background: Accurate measurement and reconstruction of orbital soft tissue is important to diagnosis and treatment of orbital diseases. This study applied an interactive graph cut method to orbital soft tissue precise segmentation and calculation in computerized tomography (CT) images, and to estimate its application in orbital reconstruction.

Methods: The interactive graph cut method was introduced to segment extraocular muscle and intraorbital fat in CT images. Read More

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http://dx.doi.org/10.1186/s12886-019-1260-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6916112PMC
December 2019

Management of orbital complications in palatomaxillary reconstruction: A review of preemptive and corrective measures.

Head Neck 2020 Mar 13;42(3):556-568. Epub 2019 Dec 13.

THANC (Thyroid, Head and Neck Cancer) Foundation, New York, New York.

Background: Reconstruction of orbit-sparing palatomaxillary defects requires consideration of globe dystopia, orbital volume, eyelid position and function, and the nasolacrimal system to preserve and optimize vision, globe protection, and appearance. We describe the fundamentals of orbital and eyelid anatomy, common orbital complications related to palatomaxillary reconstruction, and preemptive and corrective surgical techniques to be utilized during and after globe-sparing palatomaxillary reconstruction.

Methods: We present a review of the literature supplemented by clinical case examples. Read More

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http://dx.doi.org/10.1002/hed.26015DOI Listing

Parapharyngeal Alveolar Soft Part Sarcoma in a 5-Year-Old Child.

J Craniofac Surg 2020 Jan/Feb;31(1):e99-e101

Department of Internal Medicine, Government Medical College, Srinagar, India.

Alveolar soft part sarcoma (ASPS) is a rare malignancy of head and neck region; orbit and tongue being most common subsites affected by this rare tumor. A 5-year-old female presented with computed tomography scan evidence of right-sided prestyloid parapharyngeal mass. Complete excision was performed through trans-cervical approach. Read More

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http://dx.doi.org/10.1097/SCS.0000000000006050DOI Listing
March 2020
0.676 Impact Factor

Endoscopically assisted computer-guided repair of internal orbital floor fractures: an updated protocol for minimally invasive management.

J Craniomaxillofac Surg 2019 Dec 27;47(12):1943-1951. Epub 2019 Nov 27.

Maxillofacial Surgery Department, Academic Hospital of Udine, Department of Medicine, University of Udine, Italy. Electronic address:

Background: Performing accurate anatomical reconstruction is a challenging task in the treatment of internal orbital floor fractures. Compared with traditional transcutaneous incisions, endoscopic transmaxillary approaches have the advantage of avoiding complications related to external scars, and provide direct access to the orbital floor. Autogenous bone provides the ideal material for defect reconstruction, but determination of the correct size and shape of the graft is crucial for a stable support. Read More

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http://dx.doi.org/10.1016/j.jcms.2019.11.005DOI Listing
December 2019

Orbit image analysis machine learning software can be used for the histological quantification of acute ischemic stroke blood clots.

PLoS One 2019 5;14(12):e0225841. Epub 2019 Dec 5.

CÚRAM-Centre for Research in Medical Devices, National University of Ireland Galway, Galway, Ireland.

Our aim was to assess the utility of a novel machine learning software (Orbit Image Analysis) in the histological quantification of acute ischemic stroke (AIS) clots. We analyzed 50 AIS blood clots retrieved using mechanical thrombectomy procedures. Following H&E staining, quantification of clot components was performed by two different methods: a pathologist using a reference standard method (Adobe Photoshop CC) and an experienced researcher using Orbit Image Analysis. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0225841PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6894878PMC
March 2020
3.234 Impact Factor

Cranium and Vertebral Column of Xingxiulong chengi (Dinosauria: Sauropodomorpha) from the Early Jurassic of China.

Anat Rec (Hoboken) 2020 Apr 5;303(4):772-789. Epub 2019 Dec 5.

Key Laboratory of Vertebrate Evolution and Human Origins, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing, China.

The Lower Jurassic Lufeng Formation in Yunnan Province of southwestern China provides one of the most abundant records of sauropodomorphs in the world. However, most of them have not been fully described. Xingxiulong chengi is among the most complete non-sauropodan sauropodomorphs ever discovered from Lufeng Formation and is represented by three partial skeletons. Read More

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http://dx.doi.org/10.1002/ar.24305DOI Listing

Immunological Aspects of Graves' Ophthalmopathy.

Biomed Res Int 2019 12;2019:7453260. Epub 2019 Nov 12.

Chair and Department of Biochemistry, First Faculty of Medicine, Medical University of Warsaw, Warsaw, Poland.

The body's autoimmune process is involved in the development of Graves' disease (GD), which is manifested by an overactive thyroid gland. In some patients, autoreactive inflammatory reactions contribute to the development of symptoms such as thyroid ophthalmopathy, and the subsequent signs and symptoms are derived from the expansion of orbital adipose tissue and edema of extraocular muscles within the orbit. The autoimmune process, production of antibodies against self-antigens such as TSH receptor (TSHR) and IGF-1 receptor (IGF-1R), inflammatory infiltration, and accumulation of glycosaminoglycans (GAG) lead to edematous-infiltrative changes in periocular tissues. Read More

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http://dx.doi.org/10.1155/2019/7453260DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6875285PMC