Endoscopic quadruple hamstring graft. A, A 3-cm incision is made over the pes anserinus tendon. B, Inferior retraction of the sartorius tendon, exposing the gracilis and semitendinosus tendons. C, Placement of Penrose drain around the hamstring tendon to be harvested. D, Two running, interlocking (Krackow) sutures. SEE TECHNIQUE 51.18.