How should your back bend?
As always, in the realm of physical therapy and injury rehabilitation, there are often more questions than hard answers.
One of the most often debated areas relates to the notions of mobility, stability, flexibility and how these impact low back pain.

Because the language used can change from person to person or physical therapist to physical therapist, I want to start off by defining some terms in the context I’ll be using them.
That way, we’re all on the same page. Or at least on different pages of the same book.
Mobility: Ability of a joint to go through a specific range of motion under neuromuscular motor control. To confuse things even more, mobility can be further categorized as hypomobility (not enough movement) or hypermobility (too much movement). So as you can see, mobility can encompass components of both stability and flexibility).
Stability: This term falls under the continuum of mobility, but for our purposes will be used to denote the ability to of a joint to resist excess motion and maintain joint integrity under neuromuscular control.
Flexibility: The total range through which a joint can move through without necessarily taking into consideration the level of neuromuscular control that is exercised (e.g. when you’re lying on your back and someone is pushing your leg into a hamstring stretch).
One of the most common statements I hear in my physical therapy practice from my low back pain clients is that they believe they need more flexibility in their lumbar spines or in their hamstrings, that these areas just don’t move enough.
In most cases, this couldn’t be further from the truth.
As I’ve stated previously, what is needed is more hip mobility and increased lumbar spine stability.
In the next post, I’ll dig a little deeper into the impact of mobility, stability and flexibility on low back pain and how mobilizing your hips and stabilizing your low back could spare your spine and save you pain.
Yours in movement.
Dev Chengkalath




