The more severe clinical stages, the lower success rate of hemodynamics (Hemodynamic success rate was 91.7%, 89.3%, 70.7%, 44.4% of Rutherford 3, Rutherford 4, Rutherford 5, Rutherford 6 respectively) and the higher infrapopliteal restenosis after 12 months rate (12 months restenosis rate of infrapopliteal PTA was 33.3%, 67.9%, 66.7%, 100% of Rutherford 3, Rutherford 4, Rutherford 5, Rutherford 6 respectively).