Table 2 Comparison of spinopelvic parameters preoperatively, postoperatively and at the final follow-up

GK (°)

74.1 (69.5, 85.5)

40.0 (33.4, 44.4)

44.7 (35.2, 47.1)

< 0.001*

TK (°)

57.0 (40.8, 70.5)

30.4 (25.0, 38.5)

38.4 (34.2, 43.1)

0.002*

TL (°)

49.5 (40.1, 62.9)

8.7 (2.9, 21.1)

8.5 (3.5, 18.5)

< 0.001*

LL (°)

60.9 (56.4, 78.7)

40.8 (34.9, 48.1)

45.1 (39.5, 55.5)

< 0.001*

SVA (mm)

5.0 (−15.9, 10.7)

−10.5 (−27.9, 13.9)

−20.9 (−27.6, 17.0)

0.097

PI

40.1 (36.0, 43.5)

40.1 (37.5, 43.3)

42.3 (35.7, 44.9)

0.136

PT

13.7 (−1.0, 20.7)

8.1 (5.1, 14.5)

8.2 (2.3, 13.6)

0.258

SS

30.3 (26.6, 37.8)

33.7 (25.3, 38.9)

32.7 (29.1, 39.6)

0.165

Absolute value of LL- PI

26.5 (16.8, 33.5)

6.2 (4.5, 10.0)

6.1 (1.8, 13.7)

< 0.001*