3. [Medicinal parts] The rhizome of Drynaria fortunei (Kunze) J.Sm.9. [Chemical composition] Contains naringin, which is hydrolyzed to obtain quercetin, D-glucose and L-rhamnose.The content of naringin in the rhizomes of Quercus quercetin was determined to be 1.00% by thin-layer ultraviolet spectrophotometry.Also contains naringin, 21-hopaene, cyclosporine-acetate, cyclosporine acetate, cycloopiostenol acetate, β-sitosterol, echeverin Wait.49. According to the research of Zhou Tongshui of China Pharmaceutical University, Quercus fern rhizome water decoction (20g/kg, 30g/kg) and naringin (equivalent to the original drug 20g/kg) by gavage can promote the healing of experimental rat bone injury. effect.92. Drynariae 500g, salt 50g.First pour 2500ml of water into a clean container, add salt and stir well, wait for the salt to dissolve, then put in Drynariae, soak for 12 hours, filter out Drynariae, dry it on a low fire, and grind it into fine powder.3g per night, take light salt decoction before going to bed, 3 days is a course of treatment, usually one to three courses of treatment can be used for basic recovery.