The thoracic spine is the least mobile and at the same time most stable segment of the spine. Problems in this area are therefore not so frequent as it occurs by cervical or lumbar spine, however, if problems occur, they might be very unpleasant. Thoracic spine and thorax secure two main functions:
- they form a thoracic cavity - an elastic, firm and spacious chamber for the heart, lungs, large vessels, esophagus and other chest organs
- ensuring firm support for muscles which secure the breathing function
The chest is with its shape, structure and bones forming construction for implementation of breathing movements
. Active movement of the chest, especially inhaling, is performed thanks to the breathing muscles. Movements of the thoracic spine are affecting the dynamics of breathing and breathing then affects the dynamics of the spine. It is a general understanding that breathing is not only a process of gas exchange, but it is also playing significant role in regulation of irritation of the nervous system
. Inhale excites (energize, stimulates, irritates) and exhale on the other hand relaxes. Sufficiently and symetrically developed muscles of the thorax and shoulders are a prerequisite for a good health, correct body posture and also effective prevention against many unpleasant painful problems
. Correctly developed chest muscles strengthen the joint connections between the sternum bone and ribs
. Dislocated shoulder can be maniested by pain in the front part of the thorax, but also in more distant areas, such us lower back or head.