Skip to main content

Table 2 Radiological outcomes

From: A novel nanohydroxyapatite/polyamide-66 cage for reducing the subsidence rate after single-level anterior cervical discectomy and fusion: a comparative study of 7-year follow-up

 

Group A

(n = 52)

Group B

(n = 55)

P

SA (°)

   

Pre-op

2.0 ± 3.6

1.6 ± 3.3

0.556

6 m post-op

8.6 ± 3.3*

8.2 ± 3.7*

0.563

Final follow-up

7.0 ± 3.3*#

6.6 ± 2.9*#

0.513

IH (mm)

   

Pre-op

35.4 ± 2.3

36.2 ± 2.8

0.119

6 m post-op

37.5 ± 2.1*

37.8 ± 2.5*

0.519

Final follow-up

36.7 ± 1.8*#

35.9 ± 1.9#

0.037

C2-7a (°)

   

Pre-op

12.8 ± 9.6

13.1 ± 10.0

0.863

6 m post-op

20.5 ± 11.5*

19.3 ± 11.8*

0.609

Final follow-up

19.8 ± 9.4*

18.9 ± 10.0*

0.623

Fusion rate

   

6 m post-op

57.6% (30/52)

56.3% (31/55)

0.890

Final follow-up

98.0% (51/52)

96.3 (53/55)

0.592

Subsidence rate

   

6 m post-op

0% (0/52)

0% (0/55)

–

Final follow-up

5.8% (3/52)

18.2 (10/55)

0.046

  1. SA, sagittal alignment; IH, intervertebral height; C2-7a, C2-7 angle; Pre-op, preoperative; 6 m post-op, 6-month postoperative
  2. *p < 0.05 compared with pre-op
  3. #p < 0.05 compared with 6 m post-op
Back to article page

Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X