Table 2. The anteroposterior and rotational stability of involved knees from DB and SBL Stabilityreconstruction groups.

	Group	3 months	Statistical test	6 months	Statistical test	12 months	Statistical test
Anterior drawer test Positive-Rate	DB	20%	χ²= 0.254 P= 0.613	20%	χ²= 0.254 P= 0.613	20%	χ²= 0.254 P= 0.613
	SBL	25%		25%		25%
Lachman test Positive-Rate	DB	20%	χ²= 0.284 P= 0.593	20%	χ²= 0.284 P= 0.593	20%	χ²= 0.284 P= 0.593
	SBL	25%		25%		25%
Stress radiography D-Value (I/N)	DB	4.4 ± 0.3 mm	Duncan n.s.	4.8 ± 0.4 mm	Duncan n.s.	5.1 ± 0.3 mm	Duncan n.s.
	SBL	4.6 ± 0. 3 mm		5.0 ± 0.3 mm		5.3 ± 0.4 mm
KT-2000 D-Value (I/N)	DB	3.8 ± 0.2 mm	Duncan n.s.	3.9 ± 0.2 mm	Duncan n.s.	3.2 ± 0.2 mm	Duncan n.s.
	SBL	4.0 ± 0.2 mm		3.9 ± 0.2 mm		3.4 ± 0.2 mm
Pivot-shift test Positive-Rate	DB	20%	χ²= 0 P= 1	20%	χ²= 0 P= 1	20%	χ²= 0 P= 1
	SBL	20%		20%		20%
Rotameter D-Value (I/N)	DB	1.1 ± 0.2 mm	Duncan n.s.	1.1 ± 0.2 mm	Duncan n.s.	1.2 ± 0.2 mm	Duncan n.s.
	SBL	1.0 ± 0.2 mm		1.0 ± 0.2 mm		1.1 ± 0.2 mm

DB: anatomic double-bundle ACL reconstruction group, SBL: anatomic single-bundle ACL reconstruction + ALL reconstruction group, D-Value: Difference-Value, I/N: Involved vs Normal, n.s.: no significance