Lateral Sphincterotomy

Lateral sphincterotomy is a procedure for the treatment of anal fissure (Fissure in ano). The internal anal sphincter is one of two muscles that comprise the anal sphincter which controls the passage of faeces. The procedure lowers the resting pressure of the internal anal sphincter, which improves blood supply to the fissure and allows faster healing. The procedure has been shown to be very effective, with >90% of fissures healing at a median of 4 weeks.