The relative position of the sapheno-femoral junction (SFJ) with respect to the origin of the arterial trunk from which the deep femoral artery arises was examined. Among 47 SFJ's,9 (19%) were located at a proximal level to the arterial trunk, another 9 (19%) were located at an equal level to the trunk, and the remaining 29 (62%) were located at a distal level to the trunk. “In situ” saphenous vein graft for occlusion of the femoral artery is best indicated when the SFJ is located proximal to the arterial trunk. Our results suggested that such cases are encountered in as few as 19% of patients.