The foam roller is an instrument used to increase mobility and improve your soft tissue quality. When it comes to the benefits of foam rolling, there is a big difference between the thoracic spine and lumber spine. You should never foam roll your lower back (lumbar spine). I’m going to tell you exactly what to focus on instead if you are attempting to loosen up a stiff lower back.
Why Does Anatomy Matter?
Let’s begin by looking at the anatomy of the spine. There are three defined regions of the spine: the cervical, thoracic and lumbar vertebrae. The cervical spine is the upper 7 segments that are located in your neck. The thoracic spine is the middle 12 segments that make up the middle of your back. The lumber spine is the final 5 vertebrae that make up the lower back. Most disc problems occur in either the cervical or lumbar spine.
If you look closely at the differences between the thoracic and lumbar spine there is one that should catch your eye. It is that the thoracic vertebra articulate with the ribs on the front side at each level. In contrast, the vertebra in the lumber spine has no connection with the ribs. This means that the middle back is supported on the front by a stable rib cage. Uniquely, the lumbar spine is not and is much more unstable because of this.
If you are going to foam roll your upper back you get the added benefit of having the force dispersed to the nearby scapula or shoulder blades as well. In fact, you consciously have to raise your arms out over your body if you want to target and hit the spine most effectively during the foam rolling. But beyond this there is another very important anatomical difference that accounts for rolling of the upper back and not rolling the lower back. That is, the natural curvatures of those areas of the spine.
Your Spine Throws Curves
The thoracic spine is naturally curved forward into something called kyphosis. This is when we slump our shoulders forward and look hunched over. This gets worse the more we ignore our posture and develop muscle imbalances over time. We are all chronically deficient in thoracic extension. Using the foam roller to help us get more extension is one of the most valuable things we can secondary to a thoracic chiropractic adjustment.
On the other hand, the curve of the lumber spine is opposite. It is naturally lordotic which means that it curves backwards. Forcing your lower back into more extension is going to aggravate many conditions that are devastating if the extension gets worse. Conditions like stenosis or a spinal stress fracture are most notable. Even if neither of these conditions exist, you are never really able to effectively roll this area. This is because the muscles surrounding the lower back spasm to try and guard against the unprotected area.
For all of these reasons it is best to look to other ways to address the stiffness and tightness you are feeling in your lower back. Essentially, it is time to look to the muscles of the hips and glutes.
Also published on Medium.