You are viewing the site in preview mode
Skip to main content
| |
Group 1a (n = 67)
|
Group 2b (n = 75)
|
P value
|
|---|
|
Age (years)
|
72.1 ± 7.4
|
69.1 ± 7.1
|
0.015c
|
|
Sex (male:female)
|
12:55
|
9:66
|
0.352d
|
|
Height (cm)
|
152.1 ± 8.6
|
151.1 ± 6.2
|
0.421c
|
|
Weight (kg)
|
59.9 ± 10.9
|
63.0 ± 8.5
|
0.061c
|
|
BMI (kg/m2)
|
25.4 ± 4.8
|
27.6 ± 3.3
|
0.002c
|
|
Preoperative flexion contracture (degrees)
|
4.3 ± 8.8
|
5.2 ± 8.6
|
0.551c
|
|
Preoperative further flexion (degrees)
|
137.0 ± 7.6
|
135.9 ± 9.4
|
0.427c
|
|
Preoperative mechanical axis (degrees)
|
Varus 8.4 ± 6.6
|
Varus 8.2 ± 5.9
|
0.855c
|
|
Postoperative mechanical axis (degrees)
|
0.5 ± 2.1
|
0.4 ± 2.0
|
0.752c
|
|
Preoperative patellar tilt (degrees)
|
3.7 ± 3.3
|
3.8 ± 3.6
|
0.876c
|
|
Postoperative patellar tilt (degrees)
|
2.3 ± 3.4
|
5.7 ± 4.5
|
0.017c
|
|
Preoperative patellar displacement (mm)
|
4.1 ± 2.6
|
6.0 ± 3.5
|
<0.001c
|
|
Postoperative patellar displacement (mm)
|
1.1 ± 1.5
|
4.0 ± 2.2
|
<0.001c
|
|
Preoperative Insall-Salvati ratio
|
0.9 ± 0.1
|
0.9 ± 0.1
|
0.520c
|
|
Preoperative Blackburne-Peel ratio
|
1.3 ± 0.1
|
1.5 ± 0.2
|
0.108c
|
|
Preoperative patellar thickness (mm)
|
21.5 ± 2.0
|
21.5 ± 1.5
|
0.832c
|
|
Postoperative patellar thickness (mm)
|
21.4 ± 1.5
|
21.3 ± 1.2
|
0.711c
|
|
MCL release (yes:no)
|
3:64
|
24:51
|
<0.001d
|
|
PCL release (yes:no)
|
10:57
|
15:60
|
0.511d
|
|
Femoral valgus cut angle (degrees)
|
6.3 ± 0.8
|
6.0 ± 0.8
|
0.034c
|
|
Distal femoral cut rotation (degrees)
|
4.6 ± 1.4
|
4.5 ± 1.6
|
0.686c
|
- aGroup 1: normal patellar tracking intraoperatively and postoperatively
- bGroup 2: patellar maltracking intraoperatively or postoperatively
- cStudent t test
- dChi-square test
