välilevylle

Välilevy, often referred to as an intervertebral disc, is a complex structure found between the vertebrae of the spine. It acts as a shock absorber, cushioning the impact of daily activities like walking, running, and lifting. Each välilevy consists of two main parts: the annulus fibrosus, a tough outer layer of cartilage, and the nucleus pulposus, a gelatinous inner core. This unique composition allows the välilevy to withstand significant pressure and maintain the spine's flexibility.

The välilevy's health is crucial for spinal function. Over time, or due to injury, the välilevy can degenerate, leading to conditions like herniation or bulging discs. In a herniated välilevy, the nucleus pulposus pushes through a tear in the annulus fibrosus, potentially pressing on nearby nerves and causing pain, numbness, or weakness. Factors contributing to välilevy degeneration include aging, genetics, poor posture, repetitive strain, and obesity. Maintaining good posture, regular exercise that strengthens core muscles, and avoiding excessive strain can help preserve välilevy health.