Answer
Intervertebral discs are fibrocartilaginous discoid structure that contain a jelly-like substance in the nucleus pulposus. These discs separate vertebrae and also function as shock absorbers. However, extreme pressure can weaken the ligaments that hold the discs in place, and the annulus pulposus may rupture. When this happens, the nucleus pulposus my be forced to project or protrude posteriorly or posterior laterally. Resultant impingement on spinal nerve roots may cause pain paresthesias, and wekness.
Work Step by Step
This condition of the protrusion of the nucleus pulposus out of position is referred to as a slipped disc or a herniated disc. It occurs most frequently in the lumbar region of the vertebral column because most of the weight of the body is borne by the lumbar vertebrae at the caudal end of the column. In addition, flexing, and bending exert disproportionate stress on this region.
