What is the median point of the anterior margin of the foramen magnum called?

The median point of the anterior margin of the foramen magnum is called the basion (Ba). This anatomical landmark is crucial in cephalometrics and is defined as the mid-point of the anterior border of the foramen magnum, which serves as an important reference point for various cranial and facial measurements.

The basion is significant in assessing the craniovertebral junction and plays a vital role in determining cranial base angles and the overall anatomical relationships within the skull. It is influenced by factors such as growth and development, as well as orthodontic treatment strategies.

Other terms used in cephalometry refer to different anatomical points. For instance, gnathion is the lowest point of the mandible, articulare refers to the point of articulation of the mandible with the skull, and gonion indicates the angle formed by the ramus and body of the mandible. Understanding these distinct anatomical landmarks and their definitions is essential for practicing cephalometric analysis effectively.