| New approach group(n = 21) | Traditional posterior surgery group(n = 29) | P |
---|---|---|---|
Operation time(min) | 128.3 ± 25.1 | 151 ± 32.2 | 0.01 |
Blood loss(ml) | 243.8 ± 135.5 | 437.8 ± 224.9 | 0.001 |
Drainage volume(ml) | 70.7 ± 57.2 | 271.7 ± 95.5 | <0.001 |
Hospitalization stay(d) | 6.6 ± 1.8 | 8.5 ± 2.4 | 0.004 |