Inclusion Criteria:  aged between 55 and 85 years inclusive, Patients with BMI ≥ 30 + ASA 3 + Diabetes mellitus Patients suffering from coxarthrosis candidates for hip arthroplasty surgery or revision of hip arthroplasty  Exclusion Criteria:  Age> 85 years, <55 years Patients who are unable to understand and want. Patients with severe neurological disorders or with severe disabilities. Oncological patients and patients with malignant tumor at the edge of the wound Patients who have undergone radiotherapy treatment Patients with bleeding disorders Patients on anticoagulant treatment with warfarin or NAO Previously confirmed osteomyelitis Patients with liver cirrhosis Patients with non-enteric fistulas Patients with necrotic tissue with the presence of eschar at the intervention site Patients with autoimmune thrombocytopenia.