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Biomechanical results at 4 and 12 weeks postoperatively. (A) Failure load and (B) stiffness of the femur-graft-tibia complex after ACL reconstruction at 4 and 12 weeks postoperatively in the PET and ATE-PET groups. *P<0.05; **P<0.01. PET, polyethylene terephthalate. ATE, autologous tissue-engineered.
