Tropis is a promising minimally invasive procedure for treating anal fistulas, showing high cure rates without compromising anal function.

• Initial success rate for anal fistulas is 80% (95% CI: 0.77-0.83).
• Cure rate for high fistulas is also 80%, with a 73% success rate for second operations.
• Overall cure rate is 88%, including 88% for fistulas with abscesses and 87% for horseshoe fistulas.

Intraoperative bleeding occurs in 3% of cases and infection in 5%.