Abstract: Objective  To explore the clinical value of radiofrequency-induced thermotherapy(RFITT) ablation for varicose veins of the lower limbs.
Methods  78 patients(78 limbs) with primary varicose veins admitted to our department from September 2018 to August 2019 were divided into study group(43 cases) and control group(35 cases).The study group used RFITT ablation plus foam sclerosing agent injection and point ablation,and the control group used traditional high ligationplus foam sclerosing agent injection and point ablation.Operative time,bleeding volume,postoperative hospital stay,postoperative complications,varices recurrence rate,saphenous vein closure rate,venous clinical severity score(VCSS),chronic venous insufficiency questionnaire score(CIVIQ).
Results  The operation time,blood loss and length of hospital stay of the study group were(48.6±10.1)min,(20.1±3.2)ml,(1.6±1.0)d respectively，compared with the control group(63.1±17.8) min,(65.4±9.8)ml,(5.2±1.7) d,the difference was statistically significant(P<0.05).The incidence of postoperative complications in the study group was 4.7%,which was significantly higher than 22.9% in the control group(P<0.05).The VCSS score of the study group before treatment was(4.3±0.2),after treatment(1.4±0.9),compared with the control group(4.6±0.1),(1.6±0.4),There was no significant difference(P>0.05).The CIVIQ score of the study group after treatment was(91.2± 10.8) was higher than(83.5 ±10.1),the difference was statistically significant(P<0.05).Six months follow-up showed that there was no recurrence of varicose veins in both groups,and the closure rate of great saphenous vein was 100%.
Conclusion  RFITT ablation is safe and feasible for the treatment of varicose veins in the lower limbs.The operative time is short,the bleeding volume is small,the postoperative hospital stay is short,and the postoperative complications are small.The recent results are satisfactory.

Key words: great saphenous varices, radiofrequency-induced thermotherapy, foam sclerotherapy