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A The femoral and tibial bone tunnel diameter change in all groups together. B The femoral and tibial bone tunnel diameter change in control group, PRP group and BMAC + PRP group. The red arrow indicates significant difference between three groups by one way ANOVA. *p < 0.05 versus 6 weeks; **p < 0.01 versus 6 weeks; #p < 0.05 between weeks; ##p < 0.01 between weeks; N.S: no significant difference versus 6 weeks or between weeks
