Table 3 Comparison of postoperative local alignment between postoperative and last follow-up

Age (years)

62.5 ± 9.0

60.9 ± 10.2

0.332^a

T1 slope (°)

18.7 ± 5.3

11.3 ± 4.2

< 0.001^b

Preoperative C2–7 SVA (mm)

10.6 ± 8.8

24.9 ± 12.6

< 0.001^a

ASD, n (%)

7 (10.1%)

6 (35.3%)

0.01^c

Implant subsidence > 3 mm, n (%)

4 (5.8%)

4 (23.5%)

0.024^c

Involved levels, n (%)

0.921^c

 C2–5

14

3

 C3–6

34

8

 C4–7

21

6