Effects of Supraorbital Foramen Variations on the Treatment Efficacy of Radiofrequency Therapy for V1 Trigeminal Neuralgia: A Retrospective Study

Table 3

Numbness degree on day 1 and at 2 y after operation between the two groups (n(%)).

Time	Hole group (n = 25)	Notch group (n = 29)	χ^2	(between the two groups)
1 d after operation			2.782	0.356
I	0 (0%)	0 (0%)
II	15 (60%)	5 (17.2%)
III	10 (40%)	23 (79.3%)
IV	0 (0%)	1 (3.4%)
2 y after operation			2.581	0.461
I	11 (44%)	17 (58.6%)
II	11 (44%)	10 (34.4%)
III	3 (12%)	2 (6.9%)
IV	0 (0%)	0 (0%)
χ2	16.697	39.237
	<0.001	<0.001