Clinical observation on Yaotongning Capsule in treatment of lumbar hyperplasia(cold-dampness stagnation syndrome) Effect of six polysaccharides in formulas derived from Yaotongning on expression of inflammatory cytokines in macrophages and proliferation of chondrocyte Multicenter clinical study on Yaotongning Capsule in treatment of lumbar muscle fiber inflammation Effect of active fractions in Yaotongning Capsule on prostaglandin E2, interleukin-2, and nitrogen monoxide production and their interactions Clinical observation on therapeutic effect of Yaotongning Capsule on sciatica suffered form cold dampness and blood stasis