Low Back Pain The accurate, objective study of low back pain (LBP), itsnatural history, and its effective treatment is difficult because of the multiple factors involved. This includes the favorable natural history and spontaneous resolution of most LBP regardless of treatment, the presence of secondary and monetary gain for LBP in Western societies, and the methodological problems in setting up studies. The incidence of low back disability appears to have dramatically increased in Western society since about 1970. Waddell (1998) concluded, however, that this is not indicative of an increase in the prevalence of LBP but rather of an increase in work loss, sick certification, compensation, and long-term disability awards. Among industrialized nations, the United States has the highest rate of spinal surgery-five times that of Great Britain, for example (Taylor 1994). Studies examining the outcome of operative and non-operative treatment of back pain have not shown a distinct ad...