FC Neurosurg(SA) Part I Practice Questions - CMSA FC Neurosurg(SA) Part I - College Of Neurosurgeons Of South Africa Exam

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A 45-year-old male presents with severe headache, neck stiffness, and progressive gait ataxia. MRI demonstrates cerebellar tonsillar herniation 8 mm below the level of the foramen magnum. Which of the following neuroanatomical structures forms the anterior boundary of the foramen magnum?

Basion of the occipital bone Opisthion of the occipital bone Posterior arch of the atlas Tectal plate of the midbrain

Correct Answer:

Basion of the occipital bone

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