Experimental determination of the intervertebral stress

The aim of this study is to determine the intervertebral stress that leads to spine musculoskeletal affections. To determine the intervertebral stress, the L4 and L5 vertebras were made by using rapid prototyping. Between the vertebras the intervertebral disc was made by using silicon material. In the intervertebral disc five force sensors were inserted. A STEWART platform was used to remake the vertebra´s relative movements during that time with the aid of the five force sensor, the intervertebral stress was recorded. It was clearly shown at what load and movements during the drive, spine musculoskeletal affections can appear.