Early Postoperative Results after Removal of Cranially Migrated Lumbar Disc Prolapse: Retrospective Comparison of Three Different Surgical Strategies
Table 1
Preoperative patient data.
Group A (interlaminar approach)
Group B (translaminar approach)
Group C (endoscopic transforaminal approach)
Level of significance
Gender (females/males)
9/18
8/14
5/15
0.717 chi2
Age (years) MED (MIN–MAX; SD)
59 (38–85; 15)
59 (37–76; 10)
58 (28–79; 13)
0.592 ANOVA
Preoperative ASA score
I: 2; II: 10; III: 11; IV: 4; V: 0; VI: 0
I: 3; II: 8; III: 10; IV: 1; V: 0; VI: 0
I: 2; II: 8; III: 7; IV: 3; V: 0; VI: 0
0.903 chi2
Operated level
L1/2: 0; L2/3: 1; L3/4: 8; L4/5: 11; L5/S1: 7
L1/2: 2; L2/3: 3; L3/4: 5; L4/5: 7; L5/S1: 5
L1/2: 1; L2/3: 1; L3/4: 6; L4/5: 11; L5/S1: 1
0.365 chi2
Preoperative paresis
23/27 (85.2%)
18/22 (81.8%)
10/20 (50%)
0.015
Preoperative sensory deficit
18/27 (66.7%)
19/22 (86.4%)
15/20 (75%)
0.282 chi2
Surgeon (specialist/resident)
20/7
18/4
20/0
0.053 chi2
MED: median. MIN: minimum. MAX: maximum. SD: standard deviation. Chi2: chi-squared test. ANOVA: analysis of variance. ASA: American Society of Anesthesiologists.
