Lateral internal sphincterotomy

Lateral internal sphincterotomy is an operation performed on the internal anal sphincter muscle for the treatment of chronic anal fissure. The internal anal sphincter is one of two muscles that comprise the anal sphincter which controls the passage of feces. The procedure helps by lowering 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 96% of fissures healing at a median of 3 weeks in one trial.

Related Links:

Lithotripsy | The National Kidney Foundation

Lithotripsy: Purpose, Procedure, and Risks

Lithotripsy: MedlinePlus Medical Encyclopedia

Extracorporeal Shock Wave Lithotripsy (ESWL) for Kidney Stones

Lithotripsy | Johns Hopkins Medicine Health Library

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