Back pain is an extremely widespread symptom that occurs in 80% of the population of Western Europe at any period of life. Out of 1,000 industrial workers, 50 are incapacitated annually because of back pain at one time or another. In the UK, due to this pathology, 11.5 million working days are lost every year. In this regard, the general practitioner annually consults 20 people out of 1000, 10-15% of whom have to be hospitalized. And less than 10% of those hospitalized are undergoing surgical intervention.