Condylus occipitalis'lerin morfometrik değerlendirilmesi: "Cerrahi uygulamalar için bir rehber"

Condylus occipitalis'lerin cerrahi anatomisinin bilinmesi çeşitli kafatabanı yaklaşımları ve özellikle aşırı lateral transkondilar yaklaşım açısından oldukça önemlidir. Bu çalışma condylus occipitalis'lerin anatomisini ve bunların çevredeki yapılarla morfometrik ilişkilerini ayrıntılı olarak araştırmayı ve cinsiyet farkı olup olmadığını değerlendirmeyi amaçlamaktadır. 83 insan kuru cranium'u ( 51 erkek, 15 kadın ve 17 cinsiyeti bilinmeyen) üzerinde çalışılmıştır. Condylus occipitalis'lerin ortalama uzunluğu 24,4$pm$2,5 mm, ortalama genişliği 12,7$pm$1,7 mm ve ortalama Condylus'un 9,0$pm$1,3 mm olarak saptanmıştır. Condylus occipitalis'lerin genişliği, kalınlığı ve condylus'un ön kısmının canalis hypoglossi'den uzaklığı sağ-sol taraflar arasında farklı bulunmuştur (p

Anahtar Kelimeler:

Kafatası, Oksipital kemik, Anatomi, Cerrahi

Morphometric assessment of occipital condyles: "A guide for surgical procedures"

It is important to know surgical anatomy of occipital condyles for various cranial base approaches specially extreme lateral transcondylar approach. The aim of this study was to investigate the anatomy of occipital condyles and their morphometric relations with surrounding structures on detail and evaluate that whether sexual difference was present. This study was carried out with 83 dry adult human skulls (51 male, 15 female and 17 unknown). The mean length, width and thickness of occipital condyles were 24,4$pm$2,5 mm, 12,7$pm$1,7 mm and 9,0$pm$1,3 mm respectively. It was found that differences between left and right sides in many dimensions such as condyler width and thickness and distance of the frontal part of occipital condyle from hypoglossal canal were significant (p<0,05). Also we found gender differences for measurements such as condyler length and thickness, distance between occipital condyles and distance between hypoglossal canals of left and right sides (p<0,05).

Keywords:

Skull, Occipital Bone, Anatomy, Surgery,

PDF

___

1. Bozbuga M, Ozturk A, Bayraktar B ve ark. Surgical anatomy and morphometric analysis of the occipital condyles and foramen magnum.Okajimas Folia Anat Jpn 1999;75(6):329-34.
2. Al-Mefty O, Borba LAB, Aoki N et al. The transcondylar approach to extradural nonneoplastic lesions of the craniovertebral junction. J Neurosurg 1996;84:1-6.
3. Acikbas SC, Tuncer R, Demirez I et al. The effect of condylectomy on extreme lateral transcondylar approach to the anterior foramen magnum. Açta Neurochir (Wien)1997;139:546-50.
4. Dowd GC, Zeiller S, Awasthi D. Far lateral transcondylar approach: Dimensional anatomy. Neurosurgery 1999;45(1):95-100.
5. Bozbuğa M, Şahinoglu K, Arı Z ve ark. Kadavra ve kuru kranyumlarda disseksiyon, kafa tabanı yaklaşımlarının uygulanması ve morfometrik çalışma. Morfoloji Dergisi 2000;8(2):29-33.
6. Schwaber MK, Netterville JC, Maciunas R. Microsurgical anatomy of the lower skullbase: A morphometric analysis. Am J Otol 1990;11(6):401-5 (Abstr).
7. Seyfried DM, Rock JP. The transcondylar approach to the jugular foramen: A comparative anatomic study. Surg Neurol 1994;42:265-71.
8. Bertalanffy H, Seeger W. The dorsolateralsuboccipital transcondylar approach to the lower clivus and anterior portion of the craniocervical junction. Neurosurgery 1991 ;29:815-821.
9. Sen CN, Sekhar LN. An extreme lateral approach on intradural lesions of the cervical spine and foramen magnum. Neurosurgery 1990;27:197-204.
10. Babu RP, Sekhar LN, Wright DC. Extreme lateral transcondylar approach: technical improvements and lessons leamed. J Neurosurg 1994;81:49-59.
11. Vishteh AG, Crawford NR, Melton S et al. Stability of the craniovertebral junction after unilateral occipital condyle resection: A biomechanical study.(Abstr.) Neurosurgery 1998;43:675.
12. Seeger W.: Atlas of Topographical Anatomy of the Brain and Surrounding Structures. Springer-Verlag, Wien, 1978:486-489. (Bozbuga M, Ozturk A, Bayraktar B ve ark.: Surgical anatomy and morphometric analysis of the occipital condyles and foramen magnum.Okajimas Folia Anat Jpn 1999;75(6):329-34 )'den alınmıştır.
13. Gray H: Anatomv of Human Bodv. 13th American Edition, Los Angeles, California, 1985: 567.
14. Schaeffer JP: Morris Human Anatomv. 11th Edition, London, McGraw-HİII Book Company İne, 1953:187.
15. Başaloğlu H, Turgut M.: Foramen magnum'un morfometrik değerlendirilmesi. Nöroşirurji Kongresi Bildiri Özetleri; 1996.
16. Catalina-Herrera CJ. Study of the anatomic metric values of the foramen magnum and its reletion to sex.Acta Anat 1987; 130:344-7.
17. Olivier G. Biometry of the human occipital bone. J Anat 1975;120(3):507-18.
18. Romanes GJ. Bones. R.J.Harrison. Cunningham's Textbook of Anatomv. 11 th Edition, London, Oxford University Press, 1972:130.