Comparison of the efficacy of local autologous blood and corticosteroid injection on pain and function in patients with Tennis elbow

Background: Tennis elbow or lateral epicondylitis is a common complaint involving about a 3-5% cases in a community. Non-surgical treatment is effective in 80% of cases. Recent studies have shown the effect of autologous blood on improving the pain and function of affected patients. The present study aimed to compare the effectiveness of steroid and autologous blood local injection in controlling pain and disability in the short and long term. Methods: The present study was a clinical trial conducted in Shahid Beheshti Hospital of Babol. A total of 60 patients were divided into 3 groups; A group injected at the site of lateral epicondylitis with steroid (methylprednisolone acetate-40mg) and another group with autologous blood (2ml of venous blood), and the other group used a brace for 3 weeks. Patients were followed-up for 15, 30, and 90 days, and the PRTEE assessment questionnaire assessed their pain and disability. Results: On the 15th day, there was no statistically significant difference in pain and function in the three groups, although the injectable groups were relatively more effective. On the 30th day, the local corticosteroid was significantly better than the autologous blood group, while on the 90th day, autologous blood was significantly better than the local corticosteroid. The average day, in which 25% improvement was gained, was lower in the autologous blood transfusion group. Conclusion: Regarding the long-term effect of autologous blood on corticosteroid injections, it was recommended as a lateral epicondylitis treatment.