Study Comparing Negative Pressure Dressing vs Conventional in Patients With Resected STS After Radiotherapy

Inclusion Criteria: * Age ≥ 18 years at the day of consenting to the study * Patients with primary STS of the limb or trunk treated with preoperative external radiation therapy (decided in multidisciplinary board) * Intent to cure resection required for STS planned between 3 to 8 weeks after the end of RT * Planned primary wound closure, including local or distant jambeau * Ability to understand and willingness for follow-up visits * Covered by a medical insurance * Signed and dated informed consent document indicating that the patient has been informed of all aspects of the trial prior to enrolment. Exclusion Criteria: * Known hypersensibility to silver * Patients with a diagnosis of Ewing's sarcoma, chondrosarcoma, osteosarcoma, or desmoid tumor. Nota bene: Only patients with bone tumors are affected; patients with soft tissue tumors can be included in the study. * Patient in relapse setting; * Patient requiring a surgical revision after R1 or R2 resection; * Planned blade drainage; * Planned no wound-closure and skin graft after resection * Patient requiring authorship or curators or patient deprived of liberty.