From: Proximal junctional kyphosis in Lenke 5 AIS patients: the important factor of pelvic incidence
Total (n = 70) | Non-PJK Group (n = 57) | PJK Group (n = 13) | P# | |
---|---|---|---|---|
TL/L Cobb angle | ||||
Preoperative | 53.4 ± 8.6 | 53.9 ± 8.8 | 51.5 ± 7.9 | 0.374 |
Postoperative | 6.5 ± 5.9 | 6.3 ± 6.1 | 7.5 ± 5.4 | 0.507 |
Final | 7.3 ± 6.8 | 7.1 ± 6.9 | 8.4 ± 6.3 | 0.515 |
PI | 45.5 ± 10.2 | 46.1 ± 10.1 | 43.1 ± 10.8 | 0.352 |
SS | ||||
Preoperative | 38.0 ± 7.7 | 37.8 ± 7.6 | 38.7 ± 8.4 | 0.724 |
Postoperative | 36.2 ± 6.9 | 36.3 ± 7.0 | 35.7 ± 6.4 | 0.761 |
Final | 36.9 ± 7.5 | 37.0 ± 7.7 | 37.3 ± 6.5 | 0.827 |
PT | ||||
Preoperative | 7.5 ± 6.9 | 8.2 ± 6.6 | 4.4 ± 7.9 | 0.077 |
Postoperative | 9.3 ± 7.7 | 9.8 ± 7.0 | 7.1 ± 10.3 | 0.247 |
Final | 8.7 ± 7.4 | 9.3 ± 7.0 | 5.9 ± 8.4 | 0.132 |
LL | ||||
Preoperative | 52.0 ± 10.7 | 50.7 ± 10.5 | 57.7 ± 10.2 | 0.031 |
Postoperative | 50.9 ± 9.0 | 50.1 ± 8.6 | 56.4 ± 8.9 | 0.015 |
Final | 52.6 ± 9.5 | 51.1 ± 9.1 | 58.8 ± 8.9 | 0.006 |
GTK (T1-12) | ||||
Preoperative | 28.3 ± 12.9 | 26.2 ± 12.0 | 37.6 ± 12.9 | 0.003 |
Postoperative | 27.1 ± 11.3 | 25.3 ± 11.4 | 37.2 ± 6.3 | 0.004 |
Final | 32.1 ± 12.9 | 29.6 ± 12.1 | 42.8 ± 10.8 | < 0.001 |
TK (T5-12) | ||||
Preoperative | 21.1 ± 10.7 | 18.9 ± 8.7 | 30.7 ± 13.4 | 0.001 |
Postoperative | 20.4 ± 8.9 | 17.7 ± 8.5 | 29.3 ± 5.7 | 0.001 |
Final | 24.3 ± 11.9 | 21.6 ± 9.4 | 36.0 ± 14.8 | < 0.001 |
SVA (mm) | ||||
Preoperative | -6.9 ± 27.7 | -6.5 ± 26.4 | -8.5 ± 34.5 | 0.825 |
Postoperative | -9.1 ± 23.2 | -10.3 ± 22.6 | -3.8 ± 26.1 | 0.371 |
Final | -10.7 ± 24.7 | -10.9 ± 24.7 | -9.5 ± 25.4 | 0.844 |
PJA | ||||
Preoperative | 9.3 ± 4.0 | 9.3 ± 4.3 | 8.8 ± 2.4 | 0.636 |
Postoperative | 11.1 ± 5.7 | 9.9 ± 5.1 | 16.2 ± 5.2 | < 0.001 |
Final | 14.9 ± 8.0 | 12.3 ± 5.3 | 26.3 ± 7.6 | < 0.001 |
PI-LL | ||||
Preoperative | -6.5 ± 11.9 | -4.6 ± 10.9 | -14.6 ± 13.1 | 0.005 |
Postoperative | -5.4 ± 10.3 | -3.6 ± 8.8 | -13.6 ± 12.4 | 0.001 |
Final | -7.0 ± 10.0 | -5.0 ± 8.8 | -15.7 ± 10.3 | < 0.001 |