Hello and thanks for writing in
If medical treatment fails than surgery is the choice of treatment. A small surgical procedure is done to release the fissure in ano
1. Dilation: Dilation of the fissure with proctoscope under anesthesia
can be done and it may need multiple sitting.
2. Surgery: The tendon causing the fissure is released by small incision and it is a best cure for the diseases. The recovery time is about a week.
Your surgeon can decide better which procedure is best for you.
Best Wishes and get well soon