| Backgrounds:The syndrome of lumbar ramus posterior nervorum spinalium happens when dorsal ramus of spinal nerve and its branches are stimulated and oppressed by mechanical stretch, causing the pain on distal nerve distribution area and muscle spasm. Its symptoms include the low back pain, lumbocrural pain and limited activity. The incidence of low back pain caused by this disease is 80 percents out of the NSLBP, based on domestic and foreign literatures. When this disease happens to cooperate with other orthopedic disease such as lumbar disc herniation, lumbar osteoarthritis and so on, it is difficult to make the diagnosis, which also increases the difficulty of choosing treatment modality and affects the efficacy.The treatment modality of this disease includes surgical and conservative treatment. The type of surgical treatment contains radio frequency coagulation therapy and hypothermic freezing therapy. Speaking of the conservative treatment, modern medicine chooses nerve blocking therapy, ESWT on the pain area,NSAIDS orally. Chinese traditional medicine treatments include small needle knife therapy, manipulative therapy and Chinese herbs orally.Due to the development of radio frequency coagulation, the understanding of this disease has improved in recent 10 years. More literatures of the role TCM played in treating this disease have been written, but the research on Chinese herbs orally is few.Purpose:This paper intends to observe and evaluate the efficacy of "Sam soup" in treating the syndrome of lumbar ramus posterior nervorum spinalium whose type is liver and kidney deficiency on the perspective of evidence-based medicine. What this paper could offer is to provide the evidence of what TCM is capable of in treating this dieeaes.Methods:60 patients in accordance with the inclusion criteria, choosing from the outpatients of Spine Departmentll, Wangjing Hospital, CACMS, will be assigned to the experimental group (30 cases) and the control group (30 cases) according to a random number table. The experimental group will be given the "Sam soup" orally, twice a day, used in the morning and evening. The control group will be given the manipulative therapy, three times a week,20 minutes once. The treatment cycle of both groups is 1 week. The data of the VAS and ODI will be collected at three time points:before,1 week after,1 month after the treatment.The data will be processed by SPSS 17.0 statistical software for analysis. The experimental data will be performed using two-sided test, and P<0.05 is considered significant statistically. Measurement data using t test, count data using x 2 test.Results:After one week’s treatment, in VAS:compared the two group, after t test, t=1.01,P>0.05, no statistical significance was obtained, which proved that no significance on the purpose of pain relief; after t test, t=0.22,P>0.05, no statistical significance was obtained, proving that the effect of pain relief is equal. After lweek’s treatment, in ODI: after t test, t=2.213,P<0.05,there is significant statistical significance between the two, indicating that there is difference after 1 week of treatment of lumbar functional status in the two groups. 1 week after treatment, the two groups before and after treatment ODI score difference compared by t test, t=-1.033, P<0.05,the difference was statistically significant, indicating improve lumbar function before and after treatment are more differences, further illustrate the test group of drugs on the role of lumbar functional improvement than the other. After the treatment during 1 week and 1 month, in VAS:the treatment within a month’s time to test and control groups VAS score difference comparing one week later,t= 0.875,P>0.05, the difference not statistically significant, indicating that the two groups within 1 week after treatment to 1 month, no difference in pain relief, and further illustrate the analgesic effect of two methods sustained considerable. In ODI score, the test group and the control group ODI score difference compared by t test, t=-1.033,P<0.05, there was significant, indicating that the two groups was difference in lumbar functional improvement, and further illustrate the drug test group continued to improve the role and function of the lumbar controls better.Total efficiency:ODI score between the two groups after treatment was statistically significant (P<0.01),markedly effective rate of the test group and the total efficiency of 36.7% and 93.3%,respectively,in the control group markedly effective rate and the total effective rate was 16.7% and86.7%,respectively, the total efficiency of the test group and markedly effective rate than the control group, the two groups showed no adverse reactions.Conclusion:(1)the treatment of syndrome of lumbar ramus posterior nervorum spinalium of both methods are effective, which could well relieve pain and improve lumbar functional status. (2) during treatment and the follow-up, the two groups did not differ significantly in terms of pain relief. (3) the lumbar function of the experimental group was better than the control group during the treatment, but there was no significant difference between the two follow-up of efficacy. (4) comparing the two groups with differences in overall efficacy and markedly effective rate of the experimental group was significantly higher.
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