At which vertebral level does the spinal cord typically end?

The spinal cord typically ends at the L1-L2 vertebral level in adults. This termination point is known as the conus medullaris. The spinal cord does not extend down to the sacral vertebrae but instead tapers off at this junction, where it transitions into the cauda equina, which consists of nerve roots that continue down the vertebral canal. Knowing this anatomical landmark is essential, particularly in intraoperative monitoring, as it helps prevent damage to the spinal cord during surgical procedures involving the spine.

The other options refer to vertebral levels where the spinal cord does not end. Option B, L2-L3, is below the actual end point, while options C, T12-L1, are slightly above and do not accurately represent the conclusion of the spinal cord. Option D, C5-C6, is far too superior and is not relevant to the termination of the spinal cord. Understanding the typical termination point of the spinal cord facilitates safer surgical interventions and helps in diagnosing potential neurological issues.