These are applied on a special table with a plan separated in 2 parts. The superior or dorsal part is fixed; to it the chest of the patient is hooked through a corset. The inferior or lumbar part is fickle and on it the basin is hooked. In this way with the leaving of the fickle part, through a mechanical device, it produces the traction of the rhachis. Lumbar tractions, thoracic, cervical and to the inferior limbs can be done.