The lumbar arteries are a set of vessels that supply blood to the lower back area. These arteries play an essential role in ensuring that the muscles, bones, and other structures in the lower back receive adequate oxygen and nutrients. If the lumbar arteries become obstructed or damaged, it can lead to painful conditions such as low back pain, sciatica, or even paralysis. Some synonyms for lumbar arteries include the following: arteries of the lumbar region, lower back arteries, spinal arteries, and dorsal arteries. All of these terms refer to the same set of arteries that supply blood to the lower back area.