Jisoo Yoon, Nalini Pather
The anterior ethmoidal foramen (AEF) and posterior ethmoidal foramina (AEF and PEF, respectively) on the medial wall and the cranio-orbital foramen (COF) on the lateral wall are used as landmarks in orbital surgeries. In surgery these foramina, the neurovascular structures they transmit and other orbital structures in close proximity need to be identified to minimise their risk of damage. Despite the clinical importance, the current understandings lack consistency in the precise location, microanatomy and morphology of the foramina...
November 2016: Clinical Anatomy
Francisco J D MacArthur, Gerald W McGarry
With the development of endonasal flaps, an understanding of the arterial anatomy of the nasal cavity has become increasingly important for clinicians. Despite this, there is a lack of current, accurate overviews in the literature. We have used both endoscopic and gross dissection of six fresh frozen cadaveric heads, alongside a literature review, to produce a comprehensive description of the anatomy. Four heads had their arterial systems injected with red latex. Three injected and two uninjected heads were dissected endoscopically, to provide a total of seven sides...
February 2017: European Archives of Oto-rhino-laryngology
Milap P Mehta, Rao V Chundury, Eric S Ahn, Dipesh Mehta, Lyman M Jellema, Julian D Perry
PURPOSE: To determine how accurately a ray through the anterior and posterior ethmoidal foramina predicts the location of the optic foramen. METHODS: Dried, well-preserved, complete human skulls without bony defects belonging to the Hamann-Todd osteological collection of the Cleveland Museum of Natural History were examined. Photography was performed and a ray was drawn on orbit photographs extending through the center of the anterior and posterior ethmoidal foramina toward the optic canal...
November 2016: Ophthalmic Plastic and Reconstructive Surgery
Kang-Jae Shin, Young-Chun Gil, Shin-Hyo Lee, Wu-Chul Song, Ki-Seok Koh, Hyun Jin Shin
PURPOSE: The aim of the study was to elucidate the positional relationship of the ethmoidal foramens (EFs) with reference to the nasion to facilitate prediction of the exact location of EFs, the optic canal (OC), and the frontoethmoidal suture (FS), and thereby avoid complications during complex surgery involving the medial wall of the orbit. MATERIALS AND METHODS: One hundred two intact orbits of 57 embalmed cadavers were dissected in this observational anatomic study...
October 2016: Journal of Craniofacial Surgery
Paulo Saraceni Neto, Leonardo Mendes Acatauassu Nunes, Fabio de Azevedo Caparroz, Luciano Lobato Gregorio, Rafael de Paula E Silva Felice de Souza, Juliana Caminha Simões, Eduardo Macoto Kosugi
BACKGROUND: In severe cases of epistaxis, in spite of several procedures described in the literature for its management, surgical treatment has been recognized by most authors as 1 of the most effective, especially when it includes ligation and/or electrocoagulation of the nasal branches of the sphenopalatine artery. The objective of this study is to determine the importance of ethmoid crest resection during sphenopalatine artery surgery, in the management of severe epistaxis. METHODS: We report a double-blinded randomized clinical trial, in which intervention was the ethmoid crest resection during electrocoagulation of the sphenopalatine artery...
January 2017: International Forum of Allergy & Rhinology
M C Rusu, M Săndulescu, A-I Derjac-Aramă
The pneumatizations surrounding the pterygopalatine fossa (PPF) and closely related to the sphenopalatine foramen are anatomically variable. During the assessment of a cone beam computed tomography of a 64-year-old male patient, we found bilaterally a previously unreported anatomic variant. This was represented by a lateral or pterygopalatine recess (PPR) of the superior nasal meatus which extended in the anterior wall of the PPF and protruded within the maxillary sinus to determine a maxillary bulla. The PPR was antero-superior to the sphenopalatine foramen...
October 2016: Surgical and Radiologic Anatomy: SRA
Rodolfo Morales-Avalos, Arlette Gabriela Santos-Martínez, Cesia Gisela Ávalos-Fernández, Karim Mohamed-Noriega, Gabriela Sánchez-Mejorada, Adolfo Montemayor-Alatorre, David A Martínez-Fernández, Abraham G Espinosa-Uribe, Jibran Mohamed-Noriega, Edgar E Cuervo-Lozano, Jesús Mohamed-Hamsho, Oscar Quiroga-García, Roberto A Lugo-Guillen, Santos Guzmán-López, Rodrigo E Elizondo-Omaña
The ethmoidal foramens are located on the medial wall of the orbit and are key reference points for intraoperative orientation. Detailed knowledge of the anatomy, bony landmarks and morphometric characteristics of the medial wall of the orbit is essential for various surgical procedures. The aim of this study was to determine the morphometric variations in the medial wall of the orbit and establish significant variations regarding age and gender. A total of 110 orbits were analyzed and subdivided by age (over or under 40 years) and gender...
September 2016: European Archives of Oto-rhino-laryngology
Mikail Inal, Nuray Bayar Muluk, Osman Kürşat Arikan, Safa Şahin
OBJECTIVES: In this retrospective study, we investigated the relationship between paranasal sinus, optic canal, foramen rotundum, and vidian canal measurements. METHODS: Computed tomographic (CT) images of 320 adult subjects and 640 sides (right and left) were used. Paranasal sinus dimensions, optic canal (OC), foramen rotundum (FR), vidian canal (VC), bilateral FR (FRFR), bilateral vidian canal (VCVC), VC-foramen rotundum (VCFR), and VC-optic canal (VCOC) distances were measured...
June 2015: Journal of Craniofacial Surgery
Shaina N Reid, Janine M Ziermann, Marjorie C Gondré-Lewis
Craniofacial malformations are common congenital defects caused by failed midline inductive signals. These midline defects are associated with exposure of the fetus to exogenous teratogens and with inborn genetic errors such as those found in Down, Patau, Edwards' and Smith-Lemli-Opitz syndromes. Yet, there are no studies that analyze contributions of synchronous neurocranial and neural development in these disorders. Here we present the first in-depth analysis of malformations of the basicranium of a holoprosencephalic (HPE) trisomy 18 (T18; Edwards' syndrome) fetus with synophthalmic cyclopia and alobar HPE...
July 2015: Journal of Anatomy
Elisabeth H Ference, Stephanie S Smith, David Conley, Rakesh K Chandra
OBJECTIVES/HYPOTHESIS: To assess relevant variations in the anatomical course of the infraorbital nerve (ION). This understanding may reduce the risk of surgical injury. METHODS: A total of 100 consecutive computed-tomography sinus studies obtained in a tertiary referral center were reviewed, and measurements were made of the 200 IONs. Anatomic variants were classified into three types based on the degree to which (if any) the nerve's course descended from the maxillary roof into the sinus lumen...
June 2015: Laryngoscope
Jingying Ma, Qian Huang, Xiaokui Li, Dongsheng Huang, Junfang Xian, Shunjiu Cui, Yunchuan Li, Bing Zhou
PURPOSE: The diagnosis and management of pediatric cerebrospinal fluid (CSF) leak and encephalocele are challenging. The current study aimed to identify patient characteristics, review operative techniques, and evaluate the efficacy and safety of endoscopic endonasal repair in a pediatric population. METHODS: We retrospectively reviewed the records of pediatric patients who underwent transnasal endoscopic repair of CSF leak with or without a meningocele or an encephalocele at Beijing Tongren Hospital, Capital Medical University, between July 2003 and May 2014...
September 2015: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
Vincent Patron, Julie Berkaoui, Roger Jankowski, Emmanuelle Lechapt-Zalcman, Sylvain Moreau, Martin Hitier
PURPOSE: The olfactory cleft has garnered interest since the advent of endoscopic skull base surgery. Its precise anatomy, however, is still partially unknown. According to Rouvière, an "ethmoidal foramen" is located in its antero-medial part and contains a process of the dura mater. In a more lateral and anterior location, a second foramen, the "cribroethmoidal foramen", contains the anterior ethmoidal nerve. The aim of this study was to verify the existence of these elements and to establish landmarks for surgery...
September 2015: Surgical and Radiologic Anatomy: SRA
Milap P Mehta, Julian D Perry
PURPOSE: We sought to measure the medial orbital wall foramina distances in two previously unstudied populations, to describe a new bony medial wall feature, and to validate the accuracy of a new coordinate measurement device within the orbit. METHODS: Dried, well-preserved, complete human skulls without orbital defects were studied. Age, gender, birthplace, ethnicity, and laterality of the orbit were recorded for each skull. Supranumerary ethmoidal foramina were recorded, and the fronto-ethmoidal groove depth was measured...
April 2015: Orbit
Shikha Gupta, Sunita Gupta, Sujoy Ghosh, Poonam Narang
Juvenile nasopharyngeal angiofibroma is a locally aggressive benign vascular neoplasm, composed of vasogenic and myofibroblastic elements, accounts for 0.05-0.5% of all the head and neck neoplasms. There are very few case reports of nasopharyngeal angiofibroma involving the oral cavity; we report a case involving both the maxilla and mandible in a 17-year-old patient who reported with a large firm swelling on right side of face with recurrent epistaxis and headache. Magnetic resonance angiography revealed a large lobulated enhancing soft tissue mass, which was hypointense on T1-weighted image and heterogeneously hyperintense on T2-weighted image causing expansion of pterygopalatine fossa and sphenopalatine foramen with extension into the sphenoid sinus, ethmoid air cells, right nasal cavity, right infratemporal fossa and right maxillary sinus with remodeling of right zygomatic arch and part of body and ramus of mandible...
January 2015: Contemporary Clinical Dentistry
Zuhal Kazak, Servet Celik, Mehmet Asim Ozer, Figen Govsa
INTRODUCTION: It is clear that the importance of the ethmoidal foramen (EF) is based on its vascular contents. The frontoethmoidal suture (FS) line is recommended as more reliable navigational landmark for identifying the EF. MATERIALS AND METHODS: The vertical orientation between the EF and the FS line was studied in 188 orbits using a computer software program. RESULTS: 146 anterior EFs (77.7 %) and 42 anterior EFs (22.3 %) were situated in the FS line as intrasutural and extrasutural, respectively...
October 2015: Surgical and Radiologic Anatomy: SRA
Rajanigandha Vadgaonkar, Rajalakshmi Rai, Latha V Prabhu, Ashwin R Rai, Mamatha Tonse, P C Vani
PURPOSE: Ethmoidal foramina on the medial orbital wall show a higher incidence of variation. Surgeons performing endonasal, anterior cranial fossa and medial orbital wall surgeries must be aware of these variations as they are a source of hemorrhage and also serve as landmark in proximity to the orbital apex. AIM: The present study aims to describe the morphometric distances of various ethmoidal foramina between anterior lacrimal crest to optic canal in south Indian dry human skulls...
September 2015: Surgical and Radiologic Anatomy: SRA
Rafid Al-Mahfoudh, Ramez Kirollos, Paul Mitchell, Maggie Lee, Hans Nahser, Mohsin Javadpour
OBJECTIVES: To assess the clinical outcome, complications, and angiographic outcomes after surgical disconnection of intracranial dural arteriovenous fistulas (DAVFs). METHODS: Analysis of prospectively collected data, including clinical presentation, preoperative angiographic findings, postoperative complications, clinical, and angiographic outcomes. RESULTS: Between January 2002 and January 2012, 25 patients underwent surgery for DAVFs. The anatomical locations included tentorial (8), ethmoidal (8), foramen magnum (5), middle fossa (2), torcular (1), and parafalcine (1)...
April 2015: World Neurosurgery
Servet Celik, Mehmet Asim Ozer, Zuhal Kazak, Figen Govsa
Typically, the medial orbital wall contains an anterior ethmoidal foramen (EF) and a posterior EF, but may also have multiple EFs transmitting the arteries and nerves between the orbit and the anterior cranial fossa. The aim of this study is to determine a patient-friendly landmark of the medial orbital wall and to specify a precise location of the ethmoidal foramens (EF) in order to standardize certain anatomical marks as safe ethmoidal arteries. Orientation points on the anterior ethmoidal foramen (AEF), posterior ethmoidal foramen (PEF) and middle ethmoidal foramen (MEF) were investigated in 262 orbits...
November 2015: European Archives of Oto-rhino-laryngology
Dante Simionato Netto, Sergio Ricardo Rios Nascimento, Cristiane Regina Ruiz
OBJECTIVE: To analyze the variations in the angle basal sphenoid skulls of adult humans and their relationship to sex, age, ethnicity and cranial index. METHODS: The angles were measured in 160 skulls belonging to the Museum of the Universidade Federal de São Paulo Department of Morphology. We use two flexible rules and a goniometer, having as reference points for the first rule the posterior end of the ethmoidal crest and dorsum of the sella turcica, and for the second rule the anterior margin of the foramen magnum and clivus, measuring the angle at the intersection of two...
September 2014: Einstein
Elif Ayanoglu Aksoy, Sila Ulus Özden, Ercan Karaarslan, Ömer Faruk Ünal, Hasan Tanyeri
OBJECTIVES: The aim of this study was to evaluate the reliability of high-pitch ultra-low-dose computed tomography (CT) for detecting important paranasal sinus anatomic landmarks and pathologies. MATERIALS AND METHODS: Sixty patients (22 females, 38 males) aged 15 to 67 years (mean age, 33.68 y; SD, 9.83 y) underwent high-pitch ultra-low-dose CT of the paranasal sinuses between February and June 2012. To determine the lowest possible dose for evaluation of the paranasal sinuses, the patients were divided into three groups randomly and prospectively...
September 2014: Journal of Craniofacial Surgery
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