Early Postoperative Results after Removal of Cranially Migrated Lumbar Disc Prolapse: Retrospective Comparison of Three Different Surgical Strategies

Table 2

Surgical results.

	Group A (interlaminar approach)	Group B (translaminar approach)	Group C (endoscopic transforaminal approach)	Level of significance
Duration of surgery (minutes); MED (MIN–MAX; SD)	74; (35–140; 28.13)	57.5; (38–75; 11.98)	105; (60–180; 34.9)	<0.001; ANOVA
Surgical revisions for symptomatic herniation	5/27; (14.8%)	1/22; (4.5%)	7/20; (35%)	0.031
perioperative surgical complications	1/27; (3.7%)	0/22; (0%)	3/20; (15%)	0.097; chi^2
Length of hospital stay (days); MED (MIN–MAX; SD)	8; (7–30; 5)	8; (6–13; 1)	9; (6–22; 5)	0.076; ANOVA

MED: median.
MIN: minimum.
MAX: maximum.
SD: standard deviation.
ANOVA: analysis of variance.
Chi²: chi-squared test.