Condylus Occipitalis’in Morfometrik-Topografik Özelliklerinin ve Klinik Öneminin Değerlendirilmesi

Öz

Amaç: Kraniyovertebral bileşkede uygulanacak cerrahi operasyonlarda morbidite ve mortaliteyi azaltmak için kafa tabanında yer alan anatomik yapıların ve bu yapılar arasındaki topografik ilişkinin bilinmesi önemlidir. Lateral suboksipital kraniotomi ve condylus occipitalis rezeksiyonu tercih edilen yöntemler arasındadır. Condylus occipitalis rezeksiyonu sırasında etrafında yer alan nörovasküler yapılar hasar görebilir. Çalışmanın amacı, kişinin kafa iskeleti morfometrisinden yola çıkarak, condylus occipitalis’in tam olarak yerini belirleyecek ve etrafındaki anatomik yapılara olan uzaklıkları tahmin edecek regresyon formüllerini geliştirmektir. Gereç ve Yöntemler: Çalışma Harran Üniversitesi Tıp Fakültesi Anatomi Laboratuvarında bulunan 22 condylus occipitalis (11 kafatası) üzerinde gerçekleştirildi. Belirlenen 27 parametre kafataslarının alt, ön, yan ve arka fotoğrafları üzerinde Image J programı ile ölçüldü. Çoklu doğrusal regresyon analizi yapıldı. Bulgular: Condylus occipitalis’in morfometrik ve topografik özelliklerini belirlemek için; Condylus occipitalis uzunluğu= -2,142 + (0,330 x P15) – (0,468 x P19) – (0,748 x P20) + (0,807 x P21) Düzeltilmiş R2= 0,911; Tahminin Standart Hatası= 0,938 şeklinde formüller geliştirilmiştir. Sonuç: Tanımlayıcı istatistik bulgularında gözlenen en küçük en büyük değer arasındaki fark ve bu değerler arasındaki dağılım ile literatürde yer alan çalışmalardaki farklı bulgular dikkate alındığında ortalama değerler üzerinden yapılacak girişimlerde hatalı uygulamalar olabilir. Geliştirmiş olduğumuz formüllerin kişiye özgü yaklaşımlarda fayda sağlayacağı kanaatindeyiz.

Anahtar Kelimeler

• Condylus occipitalis
• Kafa tabanı
• Lateral suboksipital kraniotomi

Evaluating The Morphometric-Topographic Features of the Occipital Condyle and the Clinical Significance

Öz

Aim: To reduce morbidity and mortality in surgical operations to be applied to the craniovertebral junction, it is important to know the anatomical structures in the skull base and the topographical relationship between these structures. Lateral suboccipital craniotomy and occipital condyle resection are among the preferred methods. Surrounding neurovascular structures may be damaged during occipital condyle resection. The aim of study was to develop regression formulas that will determine the precise location of the occipital condyle and estimate the distances to the surrounding anatomical structures, based on the skull morphometry of the person. Material and Methods: The study was carried out on 22 condylus occipitalis (11 skulls) at Harran University, Medical Faculty Anatomy Laboratory. The determined 27 parameters were measured via the Image J program on the skulls’ inferior, anterior, lateral and posterior aspect photographs. Multiple linear regression analysis was performed. Results: To determine the morphometric and topographic features of the occipital condyle, the equations have been developed such as; The occipital condyle length= -2.142 + (0.330 x P15) – (0.468 x P19) – (0.748 x P20) + (0.807 x P21); Adjusted R2= 0.911, Standard Error of the Estimation= 0.938. Conclusion: Considering the difference between the minimum and the maximum values observed in descriptive statistics, the distribution between these values, the different findings in the studies in the literature, there may be erroneous applications in the attempts to be made over the mean values. We believe that the formulas we have developed will be beneficial in personal-specific approaches.

Anahtar Kelimeler

• Occipital condyle
• Skull base
• Lateral suboccipital craniectomy

Kaynakça

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