Relationship Between Chronic Renal Disease and Risk Stratification for Chronic Ulcer on the on the Diabetic Foot

A simple standardization of the clinical examination (Foot Risk Grading), history collection and biological data will be organized by the study sponsors. List of collected data, origin and circuit of the data: Entry of patient data (clinical, biological and additional examinations) on a database registered at the University Hospital of Montpellier on a secure server. Data from : * Computerized medical records and consultation letters. * The question form completed by the physician- The results of biological examinations carried out outside or inside the university hospital vested with a standardized standard prescription form All the data corresponds to the current annual or infra-annual follow-up of patients consulting for the pathologies studied: Diabetes and renal failure. The data will be anonymized by a chronic search entry number and 1st letter of the surname and first name. The statistical analysis of the data will be carried out internally at the Montpellier University Hospital, in collaboration with the Medical Information Department, in accordance with the partnerships already in place between our teams. Data : Simple demographic characteristics: Age, gender Clinical history: Longstanding diabetes, diabetic retinopathy, diabetic maculopathy, ischemic heart disease, history of stroke, lower limb arteriopathy, known gastroparesis, high blood pressure, hypercholesterolemia, microalbuminuria or known proteinuria. Clinical features: BMI, lower limb neuropathy - monofilament test error, pulse abolition . Treatments: diabetes, type of kidney substitution, other treatments Toxic: Tobacco, Alcohol Quality of patient follow-up: date of last ophthalmic consultation (For each diabetic person: one consultation per year is recommended - this criterion is monitored by health insurance as a quality criterion for follow-up) Biological assessment: Creatinemia, Calcaemia, Phosphatemia, Magnesemia, 1.25OHVitD, 25OHVitD, 25OHVitD, Natremia, Kalemia, Albuminaemia, PTH, CRP, Uric acid, HbA1C, Hemoglobinaemia, HDL, LDL, Triglyceridaemia, Cholesterol, Albuminuria/Creatinuria ratio, Proteinuria/Creatinuria ratio