Lumbar Spine Pain: What causes it and how can it be treated? What is the Lumbar Spine? The Lumbar Spine is the lower back. It has five intervertebral segments which are referred to as L1 (lumbar segment 1), L2, L3, L4, and L5.
Spinal Stenosis: Causes, Symptoms and Treatment. Spinal stenosis is condition in which the bone channel that carries the spinal nerves narrows. In most patients it is a degenerative condition though it can be congenital. Most cases occur in the lumber spine, in other words