on the intervertebral disc. This is referred to as vertical disc herniation.

Degeneration

thumbBefore age 40, approximately 25% of people show evidence of disc degeneration at one or more levels. Beyond age 40, more than 60% of people show evidence of disc degeneration at one or more levels on magnetic resonance imaging (MRI). These degenerative changes are a normal part of the ageing process and do not

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