While the thoracic spine is often not the source of a patient's symptoms, decreased mobility in this region can create problems up and down the chain. For example, in his book Movement, Gray Cook discusses the importance of thoracic mobility when assessing scapular stability. Additionally, mobility of the ribs, breathing pattern, and referred pain from the cervical spine must all be considered when working with the thoracic spine. In this post from Dr. E, he discusses several innovative techniques to mobilize the thoracic spine.
Below is a direct link to the video.
For this reason we need to keep an eye on the health of the spine that would later have problems with mobility.