抄録
In order to compare the effect of alclofenac with that of diclofenac sodium, a doubleblind study was performed with 57 out-patients with chronic low back pain. Alclofenac was proved to be more effective in the treatment of advanced functional low back pain and severe degenerative low back pain as well. It is considered that alclofenac is one of the useful medicines in the treatment of out-patients with any type of low back pain in view of its marked therapeutic effects and rare side effects.