Your spine is made up of 33 vertebrae (bones) that are stacked on top of one another. Between each vertebra is a cushion-like piece of cartilage called an “intervertebral disk.” Imagine the disk as a tire, with gelatin filling the hole in the tire. The rubbery outer part is called the “annulus,” and the gelatin is called the “nucleus.” When we’re young—under 30 years of age—the disk is made mostly of gelatin. As we age, we start to lose some of that gelatin. The disk becomes flatter and less flexible, making it easier to injure. In some cases, the gelatin can push out through a crack in the rubbery exterior and lead to a herniation (bulge) or rupture (tear).
Herniated disks are most common in the neck (cervical spine) and low back (lumbar spine). In the low back, disks may become damaged by excessive wear and tear or an injury.
What are common causes of a Neck Arthritis?
Your risk for developing a neck arthritis increases due to:
- Age – most herniated discs occur in people who are 30 to 50 years of age as a result of age-related disk degeneration. Herniated disks are less common after the age of 50, however, because with aging there is less fluid to push out of the disk.
- Obesity – increased weight results in increased pressure on the disks
- Occupation – jobs that are physically demanding and involve repetitive tasks such as lifting, pushing, pulling, and twisting place additional stress on the disks
- Low levels of physical activity – people who are not physically active are less able to handle physical demands
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