The spine is made up of a series of connected bones called "vertebrae." In about 5% of the adult population, there is a developmental crack in one of the vertebrae, usually at the point at which the lower (lumbar) part of the spine joins the tailbone (sacrum).
Regardless of the equipment used, the purpose of traction is to decompress neurovascular structures by separating vertebral segments through the progressive application of a pulling force.
A back sprain or strain can occur when you lift too much weight, play a strenuous sport, or even bend or twist improperly during the course of a regular day.
In the world of contact sports, such as football, hockey, soccer or basketball, a common cervical injury affecting the neck and upper body is the stinger.
Tailbone pain can make sitting and leaning back very uncomfortable. But on the bright side, most people with tailbone pain respond very well to conservative treatment.