The main types include: Intersphincteric anal fistula. Inside your rectum, two ring-like muscles control the opening and closing of your anus, called the internal and external sphincters.

While most patients with anal fistulas can be cured with a single surgery, approximately 20% of patients may develop complex ...

Obstetric fistula is a hole between the birth canal and bladder or rectum, caused by prolonged, obstructed labour without access to timely, high-quality medical treatment. It leaves women and ...