Anterior-Posterior Instability of the Knee Following ACL Reconstruction with Bone-Patellar Tendon-Bone Ligament in Comparison with Four-Strand Hamstrings Autograft

Table 2

Time of evaluation (months)	Group A
	𝑁	Mean	SD	Pairwise comparisons
				Baseline	3 months	6 months	12 months
Baseline	20	6.7000	1.94	—	P < 0.0005	P < 0.0005	P < 0.0005
3	20	3.1000	1.29	—	—	N.S	N.S
6	20	3.0000	1.29	—	—	—	N.S
12	20	2.8000	1.28	—	—	—	—
Overall Sig.	P < 0.0005

SD: standard deviation; overall sig: overall significance.