Introduction Fistula-in-ano is a track lined by granulation tissue is an abnormal connection between the epithelised surface of the anal canal (usually); anorectum or rectum deeply to the perianal skin. Anal fistula originates from the anal glands, which are located between the two layers of the anal sphincter and which drains into the anal canal. If the outlet of these glands become blocked, an abscess form which is drained and doesn’t heal completely. Abscess recur if the fistula seals, allowing accumulation of pus.
It then points to surface again and the process repeats. Fistula-in –ano is one of the common ano rectal problems with prevalence as high as 1.2 to 2.8 /10000 (1). Park’s Classification of fistula is based on the location of its tract in relation to the anal sphincter muscles: Intersphincteric, transsphincteric, suprasphincteric or extrasphincteric (2). Intersphincteric…
