| Stratification by change in SVA | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Baseline | Post-OP | Change (Δ) | ||||||||||
Decrease | Stable | Increase | p | Decrease | Stable | Increase | p | Decrease | Stable | Increase | p | |
SS | 40.6 ± 10.4 | 43.7 ± 9.0 | 37.9 ± 11.9 | 0.131 | 40.6 ± 10.6 | 43.6 ± 10.4 | 39.1 ± 12.3 | 0.344 | 0.1 ± 6.4 | −0.2 ± 5.8 | 1.2 ± 7.8 | 0.739 |
PT | 9.5 ± 8.2 | 12.4 ± 9.0 | 14.3 ± 7.0 | 0.072 | 9.2 ± 10.2 | 12.0 ± 8.3 | 13.5 ± 8.2 | 0.195 | −0.2 ± 6.6 | − 0.5 ± 5.7 | − 0.8 ± 7.1 | 0.940 |
PI | 50.0 ± 12.9 | 56.2 ± 13.4 | 52.2 ± 14.5 | 0.287 | 49.9 ± 12.4 | 55.6 ± 12.6 | 52.6 ± 14.8 | 0.334 | −0.2 ± 1.9 | −0.6 ± 1.9 | 0.3 ± 2.0 | 0.198 |
PI-LL | −7.2 ± 17.0 | −3.8 ± 9.6 | −3.6 ± 10.6 | 0.512 | −10.5 ± 13.3 | −5.1 ± 11.5 | 1.7 ± 11.8 | 0.001 | −3.3 ± 10.4 | − 1.3 ± 8.5 | 5.3 ± 10.7 | 0.004 |
LL | 57.3 ± 13.8 | 60.0 ± 9.7 | 55.8 ± 14.3 | 0.504 | 60.4 ± 10.9 | 60.7 ± 11.8 | 50.8 ± 15.0 | 0.006 | 3.1 ± 10.1 | 0.7 ± 8.2 | −5.0 ± 10.9 | 0.008 |
TK | −43.5 ± 22.5 | −37.2 ± 9.7 | −30.5 ± 13.5 | 0.012 | −45.6 ± 18.5 | −41.6 ± 10.1 | −33.8 ± 11.9 | 0.007 | −2.0 ± 14.1 | −4.4 ± 10.9 | −3.4 ± 10.1 | 0.766 |
SVA | 32.6 ± 44.9 | 1.4 ± 33.0 | −26.3 ± 39.0 | 0.000 | −19.9 ± 36.5 | −5.1 ± 36.0 | 19.6 ± 51.4 | 0.003 | −52.4 ± 25.8 | −6.6 ± 7.8 | 45.9 ± 34.2 | 0.000 |
T1SPI | −1.1 ± 4.3 | −4.2 ± 3.2 | − 6.9 ± 3.1 | 0.000 | −5.7 ± 4.1 | − 4.7 ± 3.2 | −2.8 ± 4.1 | 0.022 | − 4.6 ± 3.5 | −0.5 ± 1.5 | 4.0 ± 2.9 | 0.000 |
TPA | 8.4 ± 7.8 | 8.3 ± 7.8 | 7.5 ± 7.1 | 0.897 | 3.6 ± 8.9 | 7.3 ± 7.5 | 10.7 ± 8.5 | 0.007 | −4.8 ± 4.6 | −0.9 ± 4.4 | 3.2 ± 6.2 | 0.000 |
T1Slope | 26.5 ± 12.9 | 21.6 ± 8.9 | 14.6 ± 10.7 | 0.000 | 24.7 ± 14.3 | 25.1 ± 7.5 | 20.9 ± 10.6 | 0.311 | −1.7 ± 7.9 | 3.5 ± 6.8 | 6.3 ± 6.6 | 0.000 |
C2-C7 | 4.0 ± 22.0 | −1.7 ± 9.8 | −7.0 ± 13.8 | 0.050 | 5.5 ± 17.7 | 4.3 ± 12.4 | −0.6 ± 13.5 | 0.280 | 2.9 ± 14.1 | 5.9 ± 14.5 | 7.6 ± 12.3 | 0.444 |
C2-C7 SVA | 36.7 ± 13.9 | 36.1 ± 14.6 | 25.0 ± 18.2 | 0.013 | 35.1 ± 19.0 | 35.9 ± 12.7 | 31.7 ± 17.6 | 0.635 | −1.5 ± 13.6 | −0.5 ± 14.2 | 7.6 ± 12.9 | 0.034 |
C2-T3 | 2.0 ± 27.2 | −6.8 ± 10.8 | −11.1 ± 14.7 | 0.044 | −3.7 ± 22.1 | −5.0 ± 12.0 | −4.9 ± 13.0 | 0.954 | −4.2 ± 17.7 | 2.7 ± 14.7 | 7.1 ± 11.2 | 0.023 |
C2-T3 SVA | 62.2 ± 23.3 | 57.3 ± 21.9 | 40.9 ± 21.2 | 0.002 | 61.4 ± 32.7 | 63.0 ± 17.5 | 54.5 ± 23.4 | 0.445 | −0.8 ± 18.3 | 4.8 ± 12.5 | 14.9 ± 13.0 | 0.001 |
C2-T1 – H | 13.2 ± 26.8 | 7.0 ± 10.0 | 2.1 ± 15.3 | 0.117 | 14.5 ± 22.4 | 16.6 ± 14.0 | 7.8 ± 14.7 | 0.189 | 2.6 ± 17.6 | 11.0 ± 12.6 | 6.2 ± 13.1 | 0.219 |
C2Slope | 21.6 ± 14.8 | 23.7 ± 9.3 | 21.0 ± 10.2 | 0.737 | 19.7 ± 13.6 | 20.7 ± 8.4 | 21.4 ± 11.2 | 0.860 | −3.0 ± 10.5 | −3.3 ± 13.1 | 0.0 ± 10.6 | 0.515 |
C0Slope | −1.4 ± 7.6 | 3.0 ± 6.9 | −3.1 ± 5.1 | 0.054 | −1.3 ± 6.8 | −1.7 ± 4.5 | −4.0 ± 13.2 | 0.672 | −1.0 ± 7.7 | −7.3 ± 8.4 | −6.8 ± 9.0 | 0.200 |
C0-C2 | 19.1 ± 11.7 | 24.1 ± 7.4 | 24.3 ± 6.7 | 0.238 | 18.8 ± 11.3 | 20.8 ± 7.1 | 24.9 ± 7.4 | 0.183 | −3.6 ± 8.2 | −3.8 ± 9.5 | 1.6 ± 5.5 | 0.351 |
MGSlope | 2.7 ± 6.4 | 9.3 ± 6.8 | 2.1 ± 4.2 | 0.011 | 4.3 ± 6.0 | 4.0 ± 5.2 | 1.1 ± 13.3 | 0.593 | −0.8 ± 7.6 | −8.6 ± 9.0 | −8.1 ± 8.7 | 0.123 |