|
USSRO
|
BSSRO
|
---|
T0
|
T1
|
T2
|
T0
|
T1
|
T2
|
---|
Mean ± SD (mm)
|
48.1 ± 6.2
|
24.8 ± 8.3
|
45.4 ± 5.5
|
49.2 ± 7.1
|
21.6 ± 8.1
|
48.4 ± 8.8
|
P (T0-T1)
|
0.038*
|
0.001**
|
P (T0-T2)
|
0.468
|
0.078
|
P (T1-T2)
|
0.005**
|
0.001**
|
- T0: preoperative, T1: immediately after surgery, T2: 1 year after surgery, *: P < 0.05, **: P < 0.01