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

Table 4

Median % change from baseline		𝑁	Mean	Mean standard error	𝑃 value
3 months	Graft A	20	−53.9518	4.42350	0.025
	Graft B	20	−68.9266	4.65002
6 months	Graft A	20	−55.2217	4.54732	0.009
	Graft B	20	−73.2599	4.78314
12 months	Graft A	20	−58.3050	4.54709	0.029
	Graft B	20	−73.2599	4.78314