*Images granted by Dr. Teresa Segovia Gómez, Management Committee GNEAUPP.
**Images granted by Dr. José Luís Lázaro-Martínez, Diabetic Foot Unit. Universidad Complutense de Madrid, Spain.
***Images granted by Dr. María Teresa Cacua Sánchez. Vascular Surgery. Centro Médico Juan Pablo II. Bogotá, Colombia.
****Images granted by Dr. Antonio de la Cuesta, Diabetic Foot Unit. Hospital San Lázaro. Seville, Spain.