The vertebrae of the lumbar spine are numbered L1 through L5; the “L” stands for “lumbar.” They are: L1: This vertebra begins the lumbar spine after the thoracic spine ends.

image: A bent 3-D printed model of a human lumbar vertebrae (L1-L5) connected with hydrogel disks illustrates the versatility of the instantly tough bonding approach. The eight bonding procedures ...

It typically stems from excessive strain on the vertebrae—either from torsion/compression or stretching. In tennis players, it usually occurs in the lumbar spine (L1–L5), most often between L4 ...

(HealthDay News) – Disc space narrowing at disc levels L1/L2 and L2/L3, visible on lumbar radiographs, may help to identify hip pain patients whose pain originates in the lumbar spine, according ...

Lower back pain is a common problem, and while it’s likely to get worse as we age, there are things we can do to protect and strengthen our backs. Here are the common causes, as well as treatments.