Abstract

The foramen magnum is an elliptical aperture located near the cranial base. The utilisation of the transcondylar technique is progressively growing in order to reach lesions located at the Craniovertebral junction. The objective of the current study was to analyse the morphology and morphometry of the foramen magnum. Material and Methods: The Department of Anatomy, A.C.S.R. Government Medical College, Nellore and Government Medical College Ongole, Andhra Pradesh, India a collection of 50 adult human dry skulls, along with an additional 50 cranial specimens. The study utilised CT scans sourced from the archives of A.C.S.R. Government Medical College, Nellore. This study was done between January 2021 to December 2023. Results: Forty percent of the skulls examined had an oval foramen magnum, according to the current study. According to cranial computerised tomography scans, the average anterior pulposus diameter in dry skulls was 35.03±0.95mm, while in dry skulls it was 35.12±2.65mm. In dry skulls, the average transverse diameter of the foramen magnum was 29.03±2.15mm, while in cranial CT, it was 28.79±1.17mm. The average measurement for the distance between the right occipital condyle's posterior margin and the intracranial edge of the right hypoglossal canal was 12.26±0.59mm, while the equivalent measurement for the left hypoglossal canal's posterior margin was 12.25±0.59mm. Conclusion: In order to better plan and manage skull base surgeries, neurosurgeons will be able to use the acquired data to analyse the architecture of the craniovertebral junction. Radiologists, orthopaedists, anthropologists, morphologists, and clinical anatomists will all find something new and interesting in the results.

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