Gallery 6 Key Rules for Low Back Health Dr Marco2018-07-13T22:31:41-04:00 The Lumbar spine, also referred to as the "Lower Back" or "Low Back" is made up of 5 vertebrae - L1, L2, L3, L4 and L5. Each of these levels are structured with an 6 Key Rules for Low Back HealthDr Marco2018-07-13T22:31:41-04:00