Where does the conus medullaris typically occur?

The conus medullaris is the terminal portion of the spinal cord, and it typically ends at the level of the L1-L2 vertebrae in adults. This area is significant because it represents the point where the spinal cord transitions into the cauda equina, which consists of a collection of nerve roots that extend downward within the vertebral canal. Understanding the anatomical location of the conus medullaris is crucial for various medical procedures and interpretations of spinal injuries, as it helps to delineate where the spinal cord ends and where peripheral nerves begin.

In infants, the conus medullaris may be located at a lower vertebral level, such as L2-L3, but it ascends to its typical position by adulthood. Therefore, knowing that the conus medullaris occurs at L1-L2 in adults is essential for comprehending the overall structure of the vertebral column and spinal cord.