Table 4.

Surgical efficacies of patients among the anterior group, the posterior group, and the medial group

Subjects	The anterior group (n = 73)	The medial group (n = 32)	The posterior group (n = 42)	p*	p #	p &
Excellent	45 (61.64%)	12 (37.50%)	33 (78.57%)	< 0.001	0.836	< 0.001
Good	22 (30.14%)	6 (18.75%)	6 (14.29%)
Acceptable	3 (4.11%)	7 (21.88%)	3 (7.14%)
Poor	3 (4.11%)	7 (21.88%)	0 (0%)

n number

* Comparison between the medial approach and anterior median approach groups; ^# comparison between the posterior approach and former median approach groups; ^& comparison between the posterior approach and medial approach groups