Introduction: We live in a society with a growing number of diabetics. That is why the number of diabetic patients with peripheral arterial disease is expanding, as is the number of cases of chronic ischemia, which threatens limb viability, or chronic limb-threatening ischemia (CLTI). The appearance of diabetic foot ulcers with an ischemic component represents the maximum risk of amputation in the absence of a firm and rapid revascularization intervention. In our study, we aim at early detection of patients who need infusion treatment immediately after surgical revascularization. Materials and methods: This is a six-year retrospective study of 115 patients with infrainguinal occlusive disease and CLTI. All subjects were classified according to the WIfI system before and after revascularization. We made a score based on the postoperative clinical evolution in the first three days in order to have an objective image of patients who received infusion treatment with PG E1. Results: All patients included in our study had diabetes. They were divided into two groups, one comprising 86 patients who underwent exclusively surgical treatment, and the other comprising 29 patients, who received a combined surgical and medical treatment. We showed that subjects who had a low postoperative score and received infusion treatment had a higher rate of limb rescue in the first year. Conclusions: In diabetic patients with infrainguinal occlusive disease who were treated in the Clinic, without the possibility of endovascular or hybrid interventions, the combination of infusion treatment with PG E1 after surgical revascularization led to a higher rate of limb rescue and healing of ischemic trophic lesions after one year.