How to measure the impact of musculoskeletal conditions.

Musculoskeletal conditions are universally prevalent among all age and gender groups, across all socio-demographic strata of society. Their impact is pervasive yet this is not widely recognised at the level of health policy and priority. Musculoskeletal conditions are a diverse group of disorders with regard to pathophysiology but are linked anatomically and by their association with pain and impaired physical function; encompassing a spectrum of conditions, including inflammatory diseases such as rheumatoid arthritis or gout; age-related conditions such as osteoporosis and osteoarthritis; common conditions of unclear aetiology such as back pain and fibromyalgia; and those related to activity or injuries such as occupational musculoskeletal disorders, sports injuries or the consequences of falls and major trauma. The increasing number of older people and the changes in lifestyle throughout the world with increasing obesity and reduced physical activity mean that the burden on people and society will increase dramatically. The growing awareness of the burden increases the need for accurate measurement and assessment of the burden as well as measurement of the impact of any public health action. This chapter considers theoretical and practical issues relevant to measuring the buden of musculoskeltal conditions in populations, societies and individuals.