BACKGROUND Low back pain is one of the most common orthopaedic problems affecting up to 80 to 90 percent of adults at some point of time in their life. In spite of its high prevalence, spontaneous recovery usually occurs within a few weeks' time and even in those cases having features of nerve root irritation; in 90 percent of the cases, their symptoms improve within two months' time whatever is the modality of treatment, but improvement may take place even without treatment. MRI also demonstrates abnormality in people without back pain.