Effect of supraorbital foramen variation on radiofrequency treatment of primary trigeminal neuralgia V1

Abstract

Objective: To compare the effect of different supraorbital foramen variations on the clinical efficacy of radiofrequency treatment of primary trigeminal neuralgia V1. Methods: The clinical data of 62 patients with primary trigeminal neuralgia (V1 branch) from February 2011 to August 2017 in the first hospital of Jiaxing were analyzed retrospectively. According to the shape of supraorbital foramen, the patients were divided into foramen group (n=28) and incisional group (n=34). The age, sex, course time, CT scan times of the two groups were recorded, and the mean rank of NRS scores and effective rates (NRS≤1) before operation, 1 day after operation, 6 months after operation, 1 year after operation and 2 years after operation were statistically analyzed, as well as the difference of numbness degree in 1 day and 2 years after operation. The short-term and long-term complications were recorded. Results: There was no significant difference in age, gender, course time, CT scan times, preoperative NRS and postoperative NRS between the two groups (P>0.05). Compared with the preoperative, the mean rank of NRS in the two groups decreased significantly at each postoperative time point, and the difference was statistically significant (all P<0.05). Foramen group of postoperative 1 d Ⅰ, Ⅱ, Ⅲ, Ⅳ numbness rate were 0, 53.6%, 46.4% and 0 respectively, after 2 years were 42.9%, 46.4%, 10.7% and 0 respectively. Incisional group of postoperative 1 d Ⅰ, Ⅱ, Ⅲ, Ⅳ numbness rate were 0, 29.4%, 67.6% and 2.9% respectively, after 2 years were 55.9%, 38.2%, 5.9% and 0 respectively. The degree of numbness 2 years after the operation was reduced in both groups compared with that 1 day after the operation, and the difference was statistically significant (all P<0.05). The effective rates of the foramen group and the incisional group were 78.6% and 52.9%, respectively, with statistically significant differences (χ(2)=4.406, P<0.05) . The patient had no other serious complications in the near and long term except for the swelling of puncture point. Conclusion: The short and long-term effective rates of supraperitoneal foramen in anatomical variants for the radiofrequency treatment of primary trigeminal neuralgia V1 are higher. The supraorbital foramen have higher long-term effective rates, there are no other serious adverse reactions excepting numbness, and the patients have a higher acceptability.