Abstract:Objective: To compare the effects of intradiscal injection of platelet-rich plasma and radiofrequency thermocoagulation in the treatment of discogenic low back pain. Methods: Using a randomized controlled trial design, 67 patients with discogenic low back pain were randomly divided into a treatment group (PRP group) with 37 cases and a control group with 30 cases (RFT group). In which PRP group treated with PRP intradiscal injection, and RFT group treated with radiofrequency thermocoagulation. The two groups were evaluated for visual analog pain scores (VAS scores), spinal function index scores (FRI scores) and short-form health questionnaire scores(SF-36) at baseline, 1 week, 3 weeks and 1 year after treatment. To compare the differences between the two groups in the above indicators, treatment efficiency and safety. Results: There was no significant difference in FRI scores between the two groups at each time point (P>0.05). One year after treatment, the VAS score and SF-36 score in the PRP group were significantly lower than those in the RFT group (P<0.05). And the curative rate of PRP group was significantly higher than that of RFT group (P<0.05). Conclusion: Intradiscal injection of platelet-rich plasma has a more significant effect on discogenic low back pain than radiofrequency thermocoagulation.