Musculoskeletal conditions (MSC) are extremely common and have important consequences for the individual and the society. Population surveys show that back pain is the most common site of regional pain in younger and middle aged adults, and knee pain in older people. The prevalence of physical disability is higher in women than men. In individuals of working age, MSC - in particular back pain and generalised widespread pain - are a common cause of sick leave and long- term work disability and hence a big problem for the individuals affected, with huge economical consequences for society.

Osteoarticular pathologies lead to physical distress for people entailing in many cases a sharp reduction in the physical and mental reaction. The elderly population in developed countries is increasing and therefore the rate of musculoskeletal disorders associated to this life stage also increases.