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Morphometric Analysis of the Middle Clinoid Process Using Maxillofacial Computed Tomography Scans
Christopher Miller1, Roukoz Chamoun1, David Beahm2
1Department of Neurosurgery, The Uni-versity of Kansas School of Medicine, Kansas City, Kansas.
This study analyzed middle clinoid process (MCP) anatomy in 150 CT scans, finding variations in prevalence and dimensions. Understanding these anatomical details is vital for safe endoscopic skull base surgery.
Area of Science:
- Neurosurgery
- Anatomy
- Radiology
Background:
- Interest in sellar and parasellar anatomy has increased due to expanded endoscopic skull base surgery.
- The middle clinoid process (MCP) is a key anatomical structure impacting surgical exposure in this region.
Purpose of the Study:
- To analyze the anatomical variations of the middle clinoid process (MCP) in the general population.
- To provide quantitative data on MCP morphology using computed tomography (CT) scans.
Main Methods:
- Reviewed 150 maxillofacial CT scans of adult patients without intracranial or nasal pathology.
- Measured MCP diameter, length, angulation, and location in axial and sagittal planes.
Main Results:
- MCP prevalence was 30.7% in males and 42.7% in females.
- 41.8% of MCPs were ring-forming and 76.4% were pneumatized.
- Significant differences in prevalence and dimensions were noted across racial and gender groups.
Conclusions:
- Detailed knowledge of MCP anatomy is essential for safe and effective endoscopic skull base procedures.
- This study offers quantitative anatomical characterization of the MCP in the U.S. population, including demographic analysis.
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