Low back pain (LBP) is a very common health problem which results in negative impact in daily life and burden especially in elderly. The global age-standardized point prevalence of LBP in 2010 was estimated to be 9.4%. Among the etiologies of low back pain, lumbar spinal stenosis is frequently encountered by physicians. In a large observational study, the prevalence of lumbar spinal stenosis was 23.6% in the general population and higher in patients more than 60 years-old. If untreated, the symptoms may persist in 70% of the patients over the 48-month observation period. On the other hand, previous studies have shown that surgery is more effective in pain relief, neurological symptoms and further functional status, however, conservative treatment still had favorable effect in patients with milder symptoms.