The one explanation for the decreased range of motion for thoracic motion segments is that in the thoracic area, the intervertebral discs are thinner.
The thoracic spine has less movement than the neck and lower back due to the fact that thoracic discs are typically thinner than cervical and lumbar discs.
The thoracic discs' ability to interact with ribs, with the exception of the bottom two, is another distinctive quality.
The intervertebral discs between the vertebrae get thinner as a result of water loss, and the space between them starts to close in. Thus, as we age, we grow shorter.
Without the discs keeping the vertebrae apart, the bone spurs can grow when the bones scrape against one another.
Learn more about thoracic motion here https://brainly.com/question/14685941
#SPJ4
