Sphincterotomy
Anal sphincterotomy is a surgical procedure that involves treating mucosal fissures from the anal canal/sphincter. The word is formed from sphincter + otomy (to cut, to separate).
Related Links:
What Does the Spleen Do? | Children’s Pittsburgh
Transplantation of the Spleen | Annals of Internal Medicine | American College of Physicians
Related Videos:

Closed Lateral Internal Sphincterotomy in Fissure in Ano

Posterior Internal Sphincterotomy and mucopexy in fissure in ano

Sphincterotomy

Rectal Surgery - Chronic Anal Fissure - Lateral Internal Sphincterotomy ( LIS)

Sphincterotomy + Band ligation of hemorrhoids
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Closed Lateral Internal Sphincterotomy in Fissure in Ano
Source: Dr Praveen Choudhary
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Posterior Internal Sphincterotomy and mucopexy in fissure in ano
Source: Piles and Fistula cure
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Sphincterotomy
Source: DigestiveDiseaseMUSC
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Rectal Surgery - Chronic Anal Fissure - Lateral Internal Sphincterotomy ( LIS)
Source: PP ( Pistol Pete)
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Sphincterotomy + Band ligation of hemorrhoids
Source: Operation Videos for Surgeons