Related Experiment Video
Updated: Sep 17, 2025
Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
Published on: January 17, 2018
Radioanatomical Assessment of the Sphenoid Ridge in Chiari Type I Malformation
Baran Can ALPERGiN1, Umit Eroglu, Fatih Yakar
1Ankara Etlik City Hospital, Department of Neurosurgery, Ankara, Türkiye.
Aim:
To compare the sphenoid ridge (SR) morphology in patients with Chiari type I malformation (CIM) with healthy subjects.
Material And Methods:
Three dimensional (3D) 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 lesser wing (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.
More Related Videos
Related Concept Videos
01:27Cranial Bones: Lateral View
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...
01:14Cranial Bones: Superior and Posterior View
The frontal bone is the single bone that forms the forehead. At its anterior midline, between the eyebrows, there is a slight depression called the glabella. The frontal bone also forms the supraorbital margin of the orbit. Near the middle of this margin is the supraorbital foramen, the opening that provides passage for a sensory nerve to the forehead. The frontal bone is thickened just above each supraorbital margin,...