Sinus pilonidal concern 26/100 000 young adults. It manifests after puberty, presenting as an acute abscess in approximately 50% of patients or as a discharging painful sinus. Patients may experience lengthy healing times resulting in considerable morbidity and disruption to a young adult's life. Eradication of pilonidal sinus is based on a wide surgical excision and at the end of the procedure, the wound is dressed with an alginate dressing (Algosteril®).

The objective is to show a better efficiency of Sorbact TM (trademark) dressings compared to Alginates that are standardized dressings after pilonidal sinus excision during a period of 75 days. The main objective is to show a difference of 20% of wounds completely healed in 75 days between the two types of dressing: 50% of wounds healed with Algosteril TM compared to 70% of wounds healed with Sorbact TM.

Inclusion Criteria:

• Man or woman over 18 years old

• Informed consent signed by the participant

• Affiliation to social security system

• Having a pilonidal sinus:

  • Asymptomatic or discovered by the patient during a routine examination
  • With chronic recurrent infection and skin rupture

Exclusion Criteria:

• Patients with concomitant pathology:

  • cancer treated by chemotherapy
  • Hypertension uncontrolled systolic blood pressure>180 mmHg or diastolic> 110 mmHg
  • Severe comorbidity with reduced life expectancy less than 12 months
  • Acute cardiovascular disease (myocardial infarction, stroke, recent heart surgery) within 3 months before inclusion

• Patients participating in another clinical trial

• Known for intolerance to one of the dressings

• Known pregnancy

• Uncontrolled diabetes (fasting glucose >2g/l)