Radiofrequency Treatment for Pilonidal Disease : Clinical Investigation on Safety of Use, Efficacy and Patient Satisfaction at 6 Months

Inclusion Criteria: * Patient presenting an infected pilonidal sinus at the exception of acute abscess stage requiring an surgical procedure * Patient aged 18 or above * For Women Of Child Bearing Age, use of efficient contraceptive (less than 1% failure) * Patient with health insurance coverage * French-speaking patient * Patient who has given their free, informed and written consent Exclusion Criteria: * Patient already included in a type 1 interventional research protocol (RIPH1) * Patient with cardiac disease (including pacemaker) * Patient with skin infection * Patient with acute abcess * Patient with suppurated cavity requiring urgent drainage * Patient for whom local or general anesthesia is contraindicated, with an anal infectious disease, or an anal fissure or who have previously had a stapled hemorrhoidopexy (Longo procedure) with metallic staples * Patient treated by aspririn or anticoagulant * Patient with bleeding or coagulation disorder * Allergic patient to nickel and chromium * Pregnant or Breastfeeding women * Patient under guardianship or curatorship * Patient incarcerated * Patient under legal protection * Patient refusing follow-up * Patient for whom MRI is contraindicated