Degeneration of the Lumbar Vertebrae
Ageing can change a variety of lower back components. The intervertebral discs become narrow. The small joints (facet joints) develop osteoarthritis while ligaments and muscles lose strength. These age-related changes in the lower spine are called wear-and-tear changes. In many cases these disorders are more associated with stiffness than with pain.
The most common symptom of facet joint osteoarthritis is pain on one side of the lower back, usually extending to one side. The pain often worsens when maintaining one position for a long time, when twisting the lower back, or when bending forward or backward. Purposeful walking and cycling are better tolerated.
Image 1: Degeneration of the Lumbar Vertebrae