This innovative model shows the injured mechanism of a herniated disc. The simulator demonstrates how the intervertebral disc prolapses when flexing the vertebrae, reproducing what happens in real life when be bend or twist our trunk. Since vertebral disorders are widespread, therapists should have this model to make people aware of the importance of gentle movements and behaviours for the spinal column. This model will be of great assistance in medicine, physiotherapy, medical surgeries and clinics, work risk prevention, ergonomics, physical education and other fields. The model consists of two vertebrae with an elastic intervertabral disc, spinal cord and nerves.