Table. 3 Radiographical outcomes

 Preoperative

10.81 (7.14)

12.21 (11.97)

14.04 (9.11)

0.412

 Postoperative immediately

12.93 (8.18)

15.89 (8.92)

15.84 (9.02)

0.283

 Last follow-up

11.68 (7.56)

12.75 (7.88)

13.78 (7.48)

0.560

 Preoperative

47.94 (13.11)

42.91 (16.14)

40.76 (14.79)

0.135

 Last follow-up

38.90 (7.20)*

36.28 (12.68)*

34.77 (10.83)*

0.267

 Preoperative

2.17 (− 0.58 to 5.56)

4.43 (1.42–7.17)

1.90 (− 2.01 to 6.84)

0.253

 Postoperative immediately

4.81 (2.39–10.20)*

5.74 (3.31–12.18)*

4.63 (1.18–11.95)*

0.647

 Last follow-up

3.55 (1.35–5.79)* ^#

4.31 (1.26–6.67) ^#

2.63 (1.06–5.12)*^#

0.703

 Preoperative

10.22 (5.61–17.13)

7.29 (4.12–15.85)

12.50 (8.77–14.83)

0.382

 Last follow-up

1.36 (1.11–1.84)*

1.33 (0.85–1.78)*

1.45 (0.93–2.04)*

0.605

 AFHR %

2.05 (0.46–2.97)

2.26 (1.04–3.68)

4.32 (0.79–6.79)

0.043

 PFHR %

1.41 (0.46–3.80)

1.94 (0.64–4.94)

2.84 (1.71–4.52)

0.187

Subsidence (%)

5.26 (2/38)

10.71 (3/28)

8.00 (2/25)

0.796

ASD (%)

7.89 (3/38)

16.00 (4/25)

25.00 (7/28)

0.072