Spine Animations

Spine Animations

Tip of the Week

Poor posture can damage the spine and its associated muscles and ligaments. A hunched stance places abnormal stress on muscles and ligaments, causes backache and fatigue, and can even cause the spine to become fixed in an abnormal position.

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Where Back Pain Begins

spondylolisthesis
Overview
Vertebral discs are the spinal column’s shock absorbers. The discs cushion the vertebral bones and allow the spine to twist and bend. Vertebral discs are composed of two main parts, a soft inner nucleus (nucleus pulposis) and a tough, fibrous outer wall (annulus fibrosis).

1. Disc Wall Weakens
Vertebral discs can be damaged by the normal wear of aging or by traumatic injury. Problems often begin when fibers in the outer wall crack and weaken. Radial tears form in and around sensitive nerve fibers in the disc wall.

2. Nucleus Pushes Through Disc Wall
The disc’s soft nucleus pushes through to the outer edge of the disc wall. This causes local back pain at the disc level.

3. Rupture Presses Against Nerve Roots
As the herniation pushes out of the disc wall, disc material may press against the large nerve roots. This can result in pain radiating down one or both legs.