Posterolateral view of the lumbar spine

Bones of the Lumbar Spine and Pelvis

The low back is defined by the lumbar spine, composed of 5 vertebrae, named L1-L5. The pelvis is defined by the bones of the pelvic girdle.

extension mobilization stretch for the thoracic spine on an exercise ball

The Thoracic Spine… The Silent Saboteur

There is an old saying that no posture is bad unless you get stuck in it. The problem is that the thoracic spine often does get stuck in bad posture.