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Clinical implications in orbital and pterional flap surgeries as well as radioimaging studies to determine topographical prevalence and characterization of meningo-orbital foramen in orbits of the Indian population / Implicaciones clínicas en cirugías de colgajo orbitario y pterional, así como estudios de radioimagen para determinar la prevalencia topográfica y la caracterización del foramen meningoorbitario en órbitas de la población india
Mahajan, Mehandi Vinayak; Anupriya, A; Devi, G. Durga; Tanna, Nita A; Mudiraj, Nitin Radhakishan; Das, Sangeeta.
  • Mahajan, Mehandi Vinayak; The Tamil Nadu Dr. M.G.R Medical University. Hospital And Research Institute. Sri Muthukumaran Medical College. Chennai. IN
  • Anupriya, A; Sri Ramachandra Institute Of Higher Education. Sri Ramachandra Medical College And Research Institute. IN
  • Devi, G. Durga; Sree Balaji Medical College And Hospital. Chennai. IN
  • Tanna, Nita A; Gmers Medical College. Gotri. IN
  • Mudiraj, Nitin Radhakishan; Bharati Vidyapeeth University. Medical College And Hospital. Sangli. IN
  • Das, Sangeeta; Kaloji Narayanrao University Of Health Sciences. Malla Reddy Institute Of Medical Sciences, Hyderabad. Telangana. IN
Int. j. morphol ; 38(6): 1810-1817, Dec. 2020. tab, graf
Article in English | LILACS | ID: biblio-1134515
ABSTRACT

SUMMARY:

The pear-shaped bony orbit connects with intracranial cavity via foramina's and fissures. The Meningo-orbital Foramen (MOF) is usually present in greater wing of sphenoid close to lateral edge of Superior orbital fissure. It provides a route for an anastomosis between the orbital branch of the middle meningeal artery (MMA) and recurrent meningeal branch of Ophthalmic Artery (OA) and hence, risk of damage during surgeries can occur. To verify occurrence and location, with morphology of MOF in dry orbits and the impending clinical hazards in surgeries pertaining to the orbit, document and analysis it to determine a standardized guideline. The presence for MOF was studied in 446 dry orbits with its location from the supra orbital margin (SOM), front zygomatic suture (FZS), the lateral tubercle of Whitnall (WT)and the lateral end of superior orbital fissure (SOF) along with its patency, laterality and number of foramina's present. Nylon probes, long divider/pins, compass and Vernier callipers was used to check the patency and various parameters. The study noted the percentage prevalence of MOF as 69 % with communication with middle cranial fossa (MCF) being 76 % of 69 % and the average distance from SOM, FZS, WT and lateral end of SOF being 35.58 mm, 24.9 mm, 26.6 mm and 0.92 mm. On comparison with various population studies, certain similarities and differences with regards to different parameters were noted. Prevalence of MOF was mostly unilateral and showed multiple foramina, that can act as channels for arteries, a variant of MMA or OA, that supply orbital structures or tumour growths. Thus, awareness of this variation is of prime importance to ophthalmologists and neurosurgeons as well as interventional radiologists, in preventing haemorrhagic condition which could further raise the difficulties in operative procedures and surgical outcomes.
RESUMEN
RESUMEN La órbita ósea en forma de pera se conecta con la cavidad intracraneal a través de forámenes y fisuras. El foramen meningoorbitario (MOF) suele estar presente en el ala mayor del esfenoides cerca del margen lateral de la fisura orbitaria superior. Proporciona una ruta para una anastomosis entre la rama orbitaria de la arteria meníngea media (MMA) y la rama meníngea recurrente de la arteria oftálmica (OA) y, por lo tanto, puede ocurrir riesgo de daño durante las cirugías. Para verificar la ocurrencia y ubicación, con la morfología de MOF en órbitas secas y los peligros clínicos inminentes en cirugías de la órbita, documentarlo y analizarlo para determinar una pauta estandarizada. Se estudió la presencia de MOF en 446 órbitas secas desde el margen supraorbitario (MOS), sutura cigomática frontal (FZS), el tubér- culo lateral de Whitnall (WT) y el extremo lateral de la fisura orbitaria superior (SOF) junto con su permeabilidad, lateralidad y número de forámenes presentes. Se utilizaron sondas de nailon, divisores / pasadores largos, brújula y calibradores Vernier para comprobar la permeabilidad. En el estudio se pudo observar que la prevalencia porcentual de MOF era del 69 %, siendo la comunica- ción con la fosa craneal media (MCF) del 76 % del 69 % y la distancia promedio desde SOM, FZS, WT y el extremo lateral de SOF era de 35,58 mm, 24,9 mm, 26,6 mm y 0,92 mm. En comparación con varios estudios de población, se observaron ciertas similitudes y diferencias con respecto a diferentes parámetros. La prevalencia de MOF fue mayoritariamente unilateral y mostró múltiples forámenes, que pueden actuar como canales para las arterias, una variante de MMA u OA, que irrigan estructuras orbitarias o crecimientos tumorales. Por lo tanto, la conciencia de esta variación es de primordial importancia para los oftalmólogos y neurocirujanos, así como para los radiólogos intervencionistas, en la prevención de una enfermedad hemorrágica que podría aumentar aún más las dificultades en los procedimientos y los resultados quirúrgicos.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Orbit / Surgical Flaps / Meningeal Arteries Type of study: Practice guideline / Prevalence study / Risk factors / Screening study Limits: Humans Country/Region as subject: Asia Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2020 Type: Article Affiliation country: India Institution/Affiliation country: Bharati Vidyapeeth University/IN / Gmers Medical College/IN / Kaloji Narayanrao University Of Health Sciences/IN / Sree Balaji Medical College And Hospital/IN / Sri Ramachandra Institute Of Higher Education/IN / The Tamil Nadu Dr. M.G.R Medical University/IN

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Full text: Available Index: LILACS (Americas) Main subject: Orbit / Surgical Flaps / Meningeal Arteries Type of study: Practice guideline / Prevalence study / Risk factors / Screening study Limits: Humans Country/Region as subject: Asia Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2020 Type: Article Affiliation country: India Institution/Affiliation country: Bharati Vidyapeeth University/IN / Gmers Medical College/IN / Kaloji Narayanrao University Of Health Sciences/IN / Sree Balaji Medical College And Hospital/IN / Sri Ramachandra Institute Of Higher Education/IN / The Tamil Nadu Dr. M.G.R Medical University/IN