Is it possible for a hard fall to cause both an anorectal abscess and an anal fistula?

Unusual. Trauma to the rectum may result in injury that would cause swelling and posinly a hematoma (blood clot) and this might become infected. In abscess would usually be the result of a penetrating injury.

Related Questions

Could a hard fall cause an anorectal abscess and anal fistula?

Yes. Trauma is a known and common cause of infections resulting in abscess and fistula. Consult with a surgeon for further evaluation. Read more...