Table 3. The clinical outcomes of anteroposterior and rotational stability of involved knee from three groups.
Stability Group 3 months Statistical test 6 months Statistical test 12 months Statistical test
Anterior drawer testPositive-Rate SB 40% χ²=6.050
P=0.049
40% χ²=6.050
P=0.049
45% χ²=9.251
P=0.010
DB 20% 20% 20%
SBL 25% 25% 25%
Lachman testPositive-Rate SB 45% χ²=7.741
P=0.021
45% χ²=7.741
P=0.021
50% χ²=10.622
P=0.005
DB 20% 20% 20%
SBL 25% 25% 25%
Stress radiographyDifference-Value(Involved vs Normal) SB 7.0 ± 0.4 mm F=337.29
P<0.001
7.6 ± 0.4 mm F=392.04
P<0.001
8.5 ± 0.4 mm F=581.10
P<0.001
DB 4.4 ± 0.3 mm 4.8 ± 0.4 mm 5.1 ± 0.3 mm
SBL 4.6 ± 0.3 mm 5.0 ± 0.3 mm 5.3 ± 0.4 mm
KT-2000Difference-Value(Involved vs Normal) SB 6.0 ± 0.3 mm F=454.02
P<0.001
6.5 ± 0.3 mm F=593.4
P<0.001
7.1 ± 0.3 mm F=1500.96
P<0.001
DB 3.8 ± 0.2 mm 3.9 ± 0.2 mm 3.2 ± 0.2 mm
SBL 4.0 ± 0.2 mm 3.9 ± 0.2 mm 3.4 ± 0.2 mm
Pivot-shift testPositive-Rate SB 50% χ²=12.224
P=0.002
50% χ²=12.224
P=0.002
55% χ²=16.396
P=0.001
DB 20% 20% 20%
SBL 20% 20% 20%
RotameterDifference-Value(Involved vs Normal) SB 5.2 ± 0.3 mm F=1985.1
P<0.001
4.9 ± 0.3 mm F=1941.2
P<0.001
6.1 ± 0.3 mm F=3233.3
P<0.001
DB 1.1 ± 0.2 mm 1.1 ± 0.2 mm 1.2 ± 0.2 mm
SBL 1.0 ± 0.2 mm 1.0 ± 0.2 mm 1.1 ± 0.2 mm
DB: anatomic double-bundle ACL reconstruction group, SB: anatomic single-bundle ACL reconstruction, SBL: anatomic single-bundle ACL reconstruction + ALL reconstruction group.