If you are suffering with lower back pain when bending there are a number of different structures that we need to be looking at, addressing and potentially be concerned about too.
When we look at a typical spine, it is made up of bones called vertebrae. In the lower back (lumbar spine) there are a total of 5 vertebrae.
The bumps on the back are called spinous processes. These are what you can see or feel when you run you hand down the back. Near these spinous processes are the joints which allow the vertebrae to articulate with each other. These joints are called facets.
In between the vertebrae are the spinal discs. We want these to be nice and spongy to allow for efficient shock absorption from any movements of activity.
When bending the lower back, these discs can get more compressed, which can cause them to bulge if there is already a problem there. This bulge can potentially pinch the nerves as they are exiting the spine.
Pain can also be caused by the stretching of the capsule around the facets if bending forwards. These facet joints can get inflamed, and if they get inflamed to the point where they start pinching on nerves they can also add to pain.
Softer structures in the area such as ligaments and muscles can get stretched when bending. If they are tight due to an injury or poor posture the pain may be an indication of requiring some guided lifestyle changes.
So as you can see there is not an easy fix such as performing a stretch or sitting a certain way to “cure back pain”. As I always say, pain is a symptom indicating that there is a problem. It’s the cause that needs to be addressed to remove it.