In this report, an original technique for augmentation of chronic biceps femoris tendon avulsion is described. The procedure is developed using a reverse fascia flap of biceps femoris to be a single-tailed graft. Then, a suture anchor is inserted on the fibular head to approximate and fix the retracted the biceps femoris. Finally, a tunnel is drilled at the proximal fibula to let the graft pass through, and the end of the graft loop is sutured to itself. This technique confers effective, firm fixation of chronic biceps femoris tendon avulsion.