The aim of this chapter is to provide an overview of patients with arteriopathy, especially in the infrapatellar segment, which is the most affected in diabetic patients. In this sense, we always try to analyze the degree of disease of the patient and, if limb salvage intervention is necessary, to evaluate the new technologies that promote higher rates of technical success with less tissue aggression. In addition to the TASK classification, which provides an idea of the degree of obstruction and thus facilitates therapeutic decision-making, the use of various classifications has been demonstrated, which aims to promote better communication between physicians about the state of ischemia and the degree of injury. The different techniques used were presented, thanks to the development of new materials, with more and more possibilities for saving limbs

Leonardo da Cruz Renó was born in Santos, Brazil. He has dedicated his career to the field of medicine, specializing in vascular surgery and angiology. He began his medical journey at the age of 18, enrolling in medical school in Volta Redonda, Rio de Janeiro. After six years of rigorous education, he completed a three-year general surgery residency, followed by a three-year residency in vascular surgery, where he trained in endovascular techniques and vascular ultrasound using Doppler technology. Leonardo has extensive experience in both conventional and innovative treatments, focusing on varicose vein surgery, including laser and echoguided foam treatments, as well as conventional arterial surgery. He has pursued additional training in endovascular surgery, enabling him to perform advanced procedures in this specialty. He holds certifications from the Brazilian specialty societies in vascular surgery, endovascular surgery, and vascular Doppler ultrasound. Last year, he earned his doctorate from the University of São Paulo's Faculty of Medicine, during which he published two papers: a systematic review and a review article. He has also contributed a chapter on the treatment of peripheral arterial disease to a medical publication and is in the process of publishing another chapter on venous disease. Currently, Leonardo is expanding his expertise in interventional radiology through specialized training. Beyond his professional pursuits, he cherishes family life with his wife and three children.