The clinical outcomes of anterior cruciate ligament reconstruction using free tendon Achilles allograft are comparable to those using Achilles allograft with bone block on its end.

Inclusion Criteria:

• male subjects
• subjects who had concomitant medial collateral ligament injury which was managed conservatively
• subjects who had meniscus tear which was managed by partial meniscectomy

Exclusion Criteria:

• subjects who underwent a subtotal or total meniscectomy, meniscal repair, or meniscal transplantation due to meniscus injury
• subjects who underwent an operation due to any concomitant ipsilateral ligament injuries
• subjects who underwent microfracture or cartilage transplantation due to full thickness cartilage injury
• female
• subjects who were older than 45
• subjects who had histories of injuries on either knee