|
Preoperative
|
Postoperative follow-up
|
---|
1 month
|
3 months
|
6 months
|
12 months
|
Last follow-up
|
---|
C2-C7 ROM (°C)
|
46.39 ± 2.41
|
27.58 ± 4.27*
|
31.78 ± 5.82*
|
36.03 ± 4.93*
|
46.03 ± 4.64
|
47.50 ± 4.59
|
SAS ROM (°C)
|
14.25 ± 1.81
|
6.56 ± 1.86*
|
9.67 ± 2.74*
|
14.03 ± 1.46
|
14.58 ± 1.34
|
15.00 ± 1.15
|
IAS ROM (°C)
|
10.89 ± 1.65
|
6.75 ± 1.70*
|
8.81 ± 2.16*
|
10.75 ± 2.37
|
11.06 ± 1.91
|
11.47 ± 1.84
|
- Data are displayed as means ± standard deviation
-
ROM range of motion, SAS superior adjacent segment, IAS inferior adjacent segment
- *Comparison between pre- and postoperative: P < 0.05