Inclusion Criteria:  Major, Having signed the informed consent to participate in the clinical study Compulsory affiliation to a social security scheme  Presenting at least one of the following two criteria:  Presence of a PAD at the stage of Chronic Critical Ischemia (CHF) of stage III or IV according to the classification of Leriche and Fontaine, Presence of one (or more) chronic wound (s) of the lower limbs of the pressure sore or ulcer type.  Exclusion Criteria:  Person referred to in Articles L. 1121-5, L1121-6, L. 1121-7 and L1121-8 of the Public Health Code. Pregnant woman, parturient or nursing mother Minor (non-emancipated) Adult person subject to a legal protection measure (guardianship, curatorship, safeguard of justice) Person of full age unable to express consent Persons deprived of their liberty by a judicial or administrative decision, persons undergoing psychiatric treatment under Articles L.3212-1 and L. 3213-1.