Turkish Neurosurgery
Radioanatomical assessment of the sphenoid ridge in Chiari type I malformation
Baran Can Alpergin1, Umit Eroglu 2, Fatih Yakar3, Umit Karadagoglu2, Omer Mert Ozpiskin2, Elif Gokalp2, Muhammet Enes Gurses4, Mert Cetin5, Orhan Beger6
1Ankara Etlik City Hospital, neurosurgery, ankara,
2Ankara University Faculty of Medicine, neurosurgery, ankara,
3Pamukkale University, neurosurgery, Denizli,
4University of Miami, Miller School of Medicine, neurosurgery, Florida,
5Gaziantep University, Faculty of Medicine, Gaziantep,
6Gaziantep University, Anatomy, Gaziantep,
DOI: 10.5137/1019-5149.JTN.46851-24.3
Aim:To compare the sphenoid ridge (SR) morphology in patients with Chiari type I malformation (CIM) with healthy subjects. Material and Methods:3-D computed tomography scans of 49 (25 men / 24 women) CIM patients aged 45.84±18.04 years, and 52 (26 men / 26 women) healthy subjects aged 43.46±11.62 years were included in the investigation. The angulation and dimension of SR were measured for both groups. Results:Compared with the controls, CIM patients had greater LW length (p<0.001) and LW width in the midline (p<0.001), but shorter LW width in the midpoint (p=0.001), LW width in the lateral point (p<0.001), and LW angle (p<0.001). In CIM, two configurations regarding LW angle types were observed: Type B in 75 LWs (76.5%) and Type C in 23 LWs (23.5%). In controls, two configurations regarding LW angle types were observed: Type A in 35 LWs (33.7%) and Type B in 69 LWs (66.3%). The distribution of the types according to study groups demonstrated that CIM affected significantly LW angle types (p<0.001). Conclusion:LW angle and length may represent middle fossa depth and anterior fossa width, respectively; thus, CIM subjects possess shallow middle fossa and wider anterior fossa.
Corresponding author : Umit Eroglu