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 test Positive-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 test Positive-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 radiography Difference-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-2000 Difference-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 test Positive-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% Rotameter Difference-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.