Abstract
We have 144 cases of epiduroscopy used to treat patients with chronic low back pain and lower limb pain during 2002 to 2009. The efficacy rate of the first 58 cases was 56.9% and that of the last 86 cases was 60.5%. The efficacy rate has not improved with the number of experience. Such a low effectiveness rate may be due to the complex problem of chronic low back pain patient. Therefore, it is necessary to explain the effectiveness for each case as much as possible, to prevent the patient from having too-high expectations before the operation. For the consideration of the indication of epiduroscopy and the efficacy in each case, we present three failed cases.