This 16-year-old woman, an avid basketball player, suffered a noncontact injury resulting in rupture of the ACL of her left knee. This was repaired using a bone-patellar tendon bone (BPTB) autograft harvested from the same knee. The graft was attached firmly to a metal endobutton and pulled up through the tibial and femoral tunnels. The endobutton was then positioned securely across the upper opening of the femoral tunnel. The distal end of the graft was secured to the tibial tunnel using a bio-asbsorble interference screw.
The patient was seen for followup 18 days following the surgery, and radiographs of the left knee were obtained (Fig. 1). These radiographs demonstrated detachment of the femoral bone plug from the endobutton, and migration inferiorly into the femoral notch.