Between which vertebral levels does the arteria radicularis magna typically arise?

The arteria radicularis magna, also known as the artery of Adamkiewicz, typically arises between the T8 and L2 vertebral levels. This artery plays a crucial role in supplying blood to the anterior portion of the spinal cord, specifically the lower cervical and upper lumbar regions.

The reason this range is significant is due to the anatomy of the spinal cord and the distribution of blood vessels. The artery of Adamkiewicz usually originates from a large segmental artery, which is often the left side of the aorta, and descends along the spinal cord to supply the lumbar and sacral regions. Its primary importance lies in its contribution to the vascularization of the spinal cord, especially where there are areas that are more prone to ischemia due to reduced blood supply.

Understanding this specific segment of the vertebral column enables clinicians and healthcare professionals to have a clearer perspective when planning surgical procedures or when considering spinal cord injuries and their implications on vascular supply.