[Operative therapy of the pilonidal sinus; 115 controlled patients (author's transl)].

The operative results of 115 patients with pilonidal sinus are described. The patients were controlled in 1977, 2 to 11 years after surgery. Only small, non-infected pilonidal sinuses should be radically excised followed by primary suture and Redon-drainage. For extended sinuses and for recurrences the best results are obtained when the wound is left open or marsupialisation is applied. Pilonidal sinus-abscesses should be incised. This simple procedure resulted in primary healing in 23% of our patients.