Table 2 Surgical data
Variable | Two-stage PAP surgery (N = 12) | Single-stage AP surgery (N = 16) | P value* |
|---|---|---|---|
UIV level | 0.090 | ||
T4 | 2 (17) | 0 | |
T9 | 10 (83) | 16 (100) | |
UIV instrumentation | 0.090 | ||
Hook | 10 (83) | 16 (100) | |
Screw | 2 (17) | 0 | |
LIV instrumentation | 1.000 | ||
S2 alar-iliac screw | 12 (100) | 16 (100) | |
LLIF level | 0.241 | ||
L1/2-L4/5 | 11 (92) | 14 (87) | |
L2/3–L4/5 | 0 (0) | 2 (13) | |
T12/L1–L3/4 | 1 (8) | 0 (0) | |
Ponte osteotomy level | 0.241 | ||
L1/2-L4/5 | 11 (92) | 14 (87) | |
L2/3–L4/5 | 0 (0) | 2 (13) | |
T12/L1–L4/5 | 1 (8) | 0 (0) | |
Operation time (min) | |||
First stage | 223.3 ± 47.8 | 449.1 ± 56.3 | |
Second stage | 279.3 ± 47.5 | N/A | |
Total time | 491.3 ± 42.0 | 449.1 ± 56.3 | 0.039 |
EBL (ml) | |||
First stage | 706.7 ± 346.5 | 1681.1 ± 779.4 | |
Second stage | 435.0 ± 195.3 | N/A | |
Total EBL | 1141.7 ± 390.7 | 1681.1 ± 779.4 | 0.038 |
Hospital stay (days) | 33.9 ± 6.7 | 31.7 ± 11.5 | 0.555 |