يعرض 1 - 6 نتائج من 6 نتيجة بحث عن '"FORAMEN magnum"', وقت الاستعلام: 1.26s تنقيح النتائج
  1. 1
    دورية أكاديمية

    المصدر: Innovations in Medicine and Healthcare in the 100th Year of the Republic; Volume: 5, Issue: Supplement (1) 182-6 ; 2687-4555 ; Medical Records

    الوصف: Aim: To analyze the anatomical structure of foramen magnum in healthy individuals according to age/gender.Material and Methods: Cranial Computed Tomography (CT) images of 130 healthy individuals (60 female, 70 male) the 18-84 age were included in our study. Using the 3D Slicer software package on these images, the Anterior-Posterior Diameter (APD), Transverse Diameter (TD), perimeter, area, angle between the posterior edge of the foramen magnum and the clivus (FMC) value, and index were found. The shapes of the foramen magnum were analysed.Results: There was no statistical significance between age, FMC, and foramen magnum index values in both genders (p>0.05). APD, TD, perimeter, and area values of males were statistically higher (p0.05). Seven shapes of foramen magnum have been seen. The most common was the oval shape (27.7%) and the least common was the pentagon (1.5%).Conclusion: Knowing the anatomical structure of the foramen magnum is important in terms of identity and ethnicity. We also think that our results may contribute to the surgical treatment of the foramen magnum and adjacent structures.

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  2. 2
    دورية أكاديمية

    المصدر: Volume: 47, Issue: 2 876-885 ; 2602-3032 ; 2602-3040 ; Cukurova Medical Journal

    الوصف: Purpose: The measurements’ reference points associated with foramen magnum (FM) and cranium were examined in this retrospective study. Also, the relation between FM and cranium harmony were calculated both on dry skull and in healthy subjects performed on computed tomography (CT). Materials and Methods: The present study was carried out on 185 healthy adult subjects (90 females; 95 males) aged between 18–67 years and 15 dried skull of unknown gender of an Anatolian population. The shapes of the FM were classified as two semicircle, oval, round, egg, tetragonal, pentagonal, hexagonal and irregular shapes. The anteroposterior length and transverse width of the FM and cranium were measured on both photos and CT. Results: The means and standard deviations of the measurements were given for three groups. To control the accuracy of FM width (FMW) and length (FML) results, a formula was used for three groups including dried skull and CT measurements of females and males, seperately (FMW=Cranial width (CW)/4.26 for group 1, CW/4.66 for group 2 and CW/4.66 for group 3; and FML=Cranial length (CL)/4.51 for group 1, CL/4.33 for group 2 and CL/4.16 for group 3). The oval type FM was predominant (26.67%) in dried skull and (23.33%) in females and (28.42%) in males.Conclusion: The present study presents noteworthy data about FM and cranium harmony of the adult Turkish population and dry skulls that will show a harmony between cranium and foramen magnum in clinical practice. There was no tetragonal and hexagonal FM types in dried skulls and tetragonal type FM was the least seen type in females and males. ; Amaç: Bu retrospektif çalışmada, foramen magnum (FM) ve kranyum ile ilişkili ölçümlerin referans noktalarını incelendi. Ayrıca, FM ve kafatası harmonisi hem kuru kemik üzerinde hem de Bilgisayarlı Tomografi (BT) kullanılarak sağlıklı kişilerde hesaplandı.Gereç ve Yöntem: Mevcut çalışma, yaşları 18-67 yaş arası değişen Türk popülasyonuna ait 185 sağlıklı yetişkin (90 kadın; 95 erkek) ve cinsiyeti belli olmayan yetişkin ...

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  3. 3
    دورية أكاديمية

    المصدر: Volume: 8, Issue: 3 207-213 ; 2146-2631 ; 2587-053X ; Kafkas Tıp Bilimleri Dergisi

    الوصف: Aim:For reliable diagnosis and surgicalapproach, a fundamental knowledge of the normal anatomy and the morphometricmeasurements of the skull base are important to the clinicians. The aim of this study isto evaluate the morphometric dimensions of Foramen Magnum (FM) and clivus withrespect to the related structures of Turkish population.Methods:313patients’ computed tomography angiography (CTA) image series of head and neckregion was examined retrospectively. Length of the clivus (LoC), angle betweenthe clivus and posterior margin of FM (C-FM), angle between the line along theposterior surface of the clivus and the other line along the posterior side ofthe dens of axis (C-D), antero-posterior diameter of the FM (FMap), largesttransvers distance between lateral margins of the FM (FMt) and the area of theFM (FMa) were measured. Results:The mean values of LoC, C-FM, C-D, FMap, FMt and FMa in femalegroup are 32.1 ± 3.4 mm, 153.46° ± 9.13, 140.61° ± 11.93, 34.72 ± 2.57 mm, 29.25 ± 2.1 mm and 733.26 ± 102.09 mm2respectively. And also the mean values of LoC, C-FM, C-D, FMap, FMt andFMa in male group are 35.2 ± 4 mm, 149.93° ± 8.6,141.28° ± 10.33, 36.29 ± 2.89mm, 30.79 ± 2.27 mm and 800.12 ± 110.62 mm2 respectively. Conclusion:Parametersof the structures related to the skull base, especially the FM can easily beevaluated using CTA. ; Amaç: Kafa tabanı ile ilgiliolguların tanısında ve cerrahilerinde doğru bir yaklaşım için bölgenin normalanatomisini ve morfometrik ölçümlerini bilmek klinisyenler için oldukça büyükbir önem taşımaktadır. Bu çalışmanın amacı Türk popülasyonunda Foramen Magnum(FM) ile Clivus’un ve ilgili yapıların morfometrik ölçümlerini değerlendirmekhedeflenmiştir.Materyal ve Metot:Retrospektif olarak 313 hastanın baş ve boyun bölgelerinin bilgisayarlıtomografi anjiyografi (BTA) görüntüleri incelendi. Clivus uzunluğu (LoC),clivus ve FM’un arka kenarı arasındaki açı (C-FM), clivus’un arka yüzeyi ile,dens axis’in arka kenarı arasındaki açı (C-D), FM’un antero-posterior çapı(FMap), FM’un lateral kenarları ...

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  4. 4
    دورية أكاديمية

    المصدر: Volume: 11, Issue: 3 237-249 ; 1308-0865 ; Pamukkale Tıp Dergisi

    مصطلحات موضوعية: intracranial hacim,foramen magnum

    الوصف: Amaç:Cranium tabanının inferior’u basis craniiexterna (BCE) üzerinde Foramen magnum(FM) mevcuttur. Palatum osseum’u (PO) maxilla’nın proc.palatinus’u ve ospalatinum’un lamina horizontalis’i oluşturmaktadır. Literatürde intracranial hacim (ICH), FM alanıarasındaki ilişkiyi araştıran çalışmalar mevcutken, ICH ile BCE ve PO alanıarasındaki ilişkiyi araştıran bir çalışmaya rastlanmamıştır. Araştırmadaki amaç, craniumlarda ICH, BCEyüzey alanı, FM kesitsel alanı ve PO alanı arasındaki ilişkiyi araştırmaktır.Gereçve yöntemler: Araştırma, Pamukkale Üniversitesi TıpFakültesi Anatomi Anabilim Dalı laboratuvarındaki 25 insan cranium’undayapılmıştır. BCE fotoğrafları çekilip, bilgisayar ekranında ölçüm ve sayımlaryapılmıştır. FM içinden cavitas cranii’ye poşet yerleştirip içine su doldurarakICH ölçülmüştür. Fotoğraflar üzerinden stereolojik yöntemlerden Noktalı alanölçüm cetveli metoduyla BCE, FM ve PO alanı hesaplanmıştır. Alan örneklemeoranı (AÖO) yöntemiyle, BCE‘de FM ve PO’nun kapladığı alan yüzde olarakhesaplanmıştır. Bütün yapılan ölçüm ve işlemler çift kör olarak yapılmıştır.Cranium’lar üzerinde adli tıpın 13 kriteri baz alınarak cinsiyet tahminiyapılmıştır. Bulgular:ICH ortalaması erkeklerde 1307,5±100,17 cm3,kadınlarda 1289,29±151,97 cm3 bulunmuştur. BCE alanı erkeklerdeortalama 325,94±47,60cm2, kadınlarda 316,29±39,36 cm2, FMalanı erkeklerde ortalama 18,28±4,23 cm2, kadınlarda17,14±2,61 cm2,PO alanı erkeklerde ortalama 58,72±13,78 cm2, kadınlarda57,29±9,93bulunmuştur. AÖO göre erkeklerde BCE’nin % 5,60’ını FM ve ,01’ini PO alanı oluştururken, kadınlarda BCE’nin % 5,52’ini FM ve ,45’ini PO alanı oluşturmaktadır. Sonuç: Çalışmamızda BCE ve FM alanı arasında,BCE ile PO alanı arasında, FM alanı vePO alanı arasında istatiksel olarak anlamlı bir ilişki bulunmuştur. Hipotezolarak ICH ile BCE alanı arasında bir ilişki olabileceği düşünülmüş, ancak istatistikselolarak anlamlı bir ilişki bulunamamıştır.

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  5. 5
    دورية أكاديمية

    المصدر: Volume: 47, Issue: 6 1715-1722 ; 1300-0144 ; 1303-6165 ; Turkish Journal of Medical Sciences

    الوصف: Background/aim: The aim of this study was to perform morphometric analysis of the foramen magnum (FM) using cone-beam computed tomography (CBCT). Materials and methods: This study included CBCT images of 190 individuals (88 males and 102 females). The sagittal and transverse diameters and circumference of the FM were measured. The shape of FM was classified as round, hexagonal, oval, egg-shaped, tetragonal, pentagonal, irregular A, and irregular B. The data were statistically analyzed with chi-square and t-tests to assess the level of significance for sex and age. Results: The means of its sagittal and transverse diameters and also circumference were higher in males than in females. Statistically significant differences were found between males and females for all variables (P < 0.05). No statistically significant difference (P > 0.05) was found between age groups for all variables. The round type was the most common, in 21.6% of the patients. Conclusion: CBCT images can provide valuable information regarding FM and the measurements of its sagittal and transvers diameters and also its circumference may be reliably used for sexual dimorphism in anthropometric analysis and forensic medicine.

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  6. 6
    دورية أكاديمية

    المصدر: Volume: 7, Issue: 1 ; 1307-8798 ; 1308-8459 ; Anatomy

    مصطلحات موضوعية: foramen magnum, morphometry, occipital condyles

    الوصف: Objectives:Knowledge of condylar anatomy helps the surgeon in making important decisions regarding extent and direction of condylar drilling and minimizing injury and retraction of neural structures. Important preoperative informationincludes length, width, axis/directions and overriding of occipital condyle in foramen magnum, relationships of condyles toforamen magnum and to hypoglossal canal. The anteroposterior and transverse diameters of foramen magnum and amountof overriding of occipital condyle in foramen magnum are useful in calculating area of surgical field. The present study aimsto provide important anatomical parameters for the far lateral transcondylar approach. Methods: The morphometric analysis of human occipital condyles and foramen magnum in 126 dried human skulls and 50separated occipital bones was performed. The parameters significant to the far lateral transcondylar approach were measured using a digital vernier caliper. In addition, morphometric analysis was also done on 40 patients using thin section CTscans. The paired ‘t’test was performed. Results: The difference between the measurements for the right side and left side and those done on CT scans and usingvernier calipers on bones came out to be statistically insignificant (p>0.05). Conclusion:The far lateral transcondylar approach provides better exposure of the ventrolateral foramen magnum and inferior clivus. Lesion removal from this site can be considerably made easier by utilizing a shorter and widened angle of exposure. Preoperative assessment using CT imaging facilitates the far lateral transcondylar approach without damage to vitalfunctional structures

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