Which of the following is a conservative treatment for anal fistulae?

Anal fistula plugs represent a conservative treatment option for anal fistulae. This methodology involves the use of a biocompatible plug that is designed to fill the tract of the fistula, promoting healing by sealing the abnormal channel and facilitating tissue regeneration. This approach aims to minimize damage to the surrounding sphincter muscles, which can preserve continence—a critical concern in the management of anal fistulae. The plug is inserted during a minimally invasive procedure, making it an appealing option for patients who may not be candidates for more invasive surgical interventions.

In contrast, the other methods mentioned—such as a seton to drain sepsis, ligation of intrasphincteric fistulae, and fistulotomy—are surgical treatments. These procedures often involve manipulating the surrounding tissues and may carry risks of complications, including potential effects on continence. Therefore, while these approaches may be necessary in certain scenarios, they do not fall under the category of conservative treatments like anal fistula plugs.