ENVELOP: Wound Care Following Pilonidal Sinus Surgery

This is a single-blinded, multicentre, prospective randomised controlled trial (RCT) comparing post-operative and patient-reported outcomes for patients undergoing application of negative-pressure wound therapy (NPWT) after sinus tract excision as compared to excision and standard open wound care in chronic pilonidal sinus disease (PSD).

Inclusion Criteria: i) They are aged 18 years or older ii) They are undergoing elective pilonidal sinus excision without primary closure Exclusion Criteria: i) They are unable to adhere to protocol requirements e.g. questionnaire completion ii) They are undergoing emergency drainage for a pilonidal abscess iii) They are undergoing surgery for pilonidal sinus disease in locations other than the natal cleft iv) They have underlying osteomyelitis v) They have underlying fistulating disease e.g. Crohn's