“…Most current percutaneous trans-luminal angioplasty balloons and stents targeted for infrainguinal regions require only 6 Fr sheaths. The 3.4 Fr, 3.2 Fr, or 2.9 Fr catheters, using 0.018-inch and 0.014-inch guide wires, are more suitable for the typical retrograde common femoral artery puncture and access to the contra-lateral femoral-popliteal segments (Hiro et al, 1998;Saketkhoo et al, 2004). In some case, especially with tortuous vessels and when antegrade puncture of the common femoral vessel is required, the 3 Fr catheters are also useful.…”