Table 2 Sagittal parameters at different measurements: preoperatively, postoperatively, and at the last follow-up
Pre-op | Post-op | Last follow-up (LFU) | P-value (Pre-op VS. Post-op) | P-value (Post-op VS. LFU) | P-value (Pre-op VS. LFU) | â–³(PRE-OP TO LFU) | |
|---|---|---|---|---|---|---|---|
MTA(°) | 49.8 ± 18.0 | 15.0 ± 11.5 | 16.1 ± 11.4 | 0.000 | 0.301 | 0.000 | −33.7 ± 15.4 |
PI | 45.5 ± 12.8 | 43.4 ± 13.9 | 44.2 ± 13.2 | 0.176 | 0.718 | 0.140 | −3.4 ± 11.7 |
PT | 6.9 ± 12.6 | 8.7 ± 10.3 | 6.8 ± 10.1 | 0.217 | 0.067 | 0.669 | −0.4 ± 9.6 |
SS | 39.8 ± 9.1 | 34.7 ± 8.8 | 37.5 ± 8.4 | 0.000 | 0.015 | 0.010 | −3.0 ± 8.4 |
LL | − 56.1 ± 12.0 | −44.3 ± 12.5 | −53.2 ± 11.1 | 0.000 | 0.000 | 0.029 | 2.8 ± 9.9 |
TK | 30.4 ± 18.0 | 25.2 ± 11.8 | 28.8 ± 12.4 | 0.000 | 0.000 | 0.313 | −1.6 ± 12.4 |
GTK | 33.6 ± 17.6 | 28.6 ± 11.7 | 35.6 ± 12.6 | 0.029 | 0.000 | 0.138 | 2.4 ± 12.2 |
PrTK | 7.0 ± 9.1 | 8.1 ± 9.9 | 10.0 ± 10.1 | 0.309 | 0.180 | 0.041 | 3.0 ± 11.5 |
SVA | −18.8 ± 39.9 | 12.3 ± 33.9 | −15.1 ± 29.2 | 0.000 | 0.000 | 0.495 | 3.8 ± 42.3 |
cSVA | 21.4 ± 10.4 | 23.4 ± 10.7 | 21.2 ± 11.4 | 0.082 | 0.169 | 0.876 | −0.2 ± 10.5 |
T1-SLOPE | 16.7 ± 12.3 | 18.8 ± 8.0 | 19.7 ± 9.0 | 0.120 | 0.425 | 0.022 | 3.8 ± 10.8 |
CL | −3.1 ± 16.4 | −4.0 ± 12.1 | −5.1 ± 14.6 | 0.521 | 0.573 | 0.154 | −2.1 ± 13.5 |
McGS | 3.2 ± 8.6 | 5.2 ± 7.3 | 5.4 ± 21.6 | 0.045 | 0.977 | 0.502 | 2.4 ± 22.1 |