Fernandez (2011) found that the multi-level arterial lesion group was higher than the single-level arterial lesion group with the wound healing rate after 6 months (87% vs 69%), the duration time of completely woung healing was faster (7.7 ± 6.6 months vs 11.5 ± 8.8 months) and the limb salvage after 12 months (95% vs 81%) 4.3.2.