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Intersphincteric groove

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Title: Intersphincteric groove  
Author: World Heritage Encyclopedia
Language: English
Subject: Anal canal
Publisher: World Heritage Encyclopedia

Intersphincteric groove

intersphincteric groove
The interior of the anal canal and lower part of the rectum. (Line not shown but region is visible.)
Latin sulcus intersphinctericus

Hilton's white line is a boundary in the anal canal.[1]

Below it, lymphatic drainage is to the superficial inguinal nodes.[2]

Hilton's white line is slightly below the pectinate line, a landmark for the intermuscular border between internal and external anal sphincter muscles.

This line represents the transition point from non-keratinized stratified squamous epithelium of the anal canal to keratinized stratified squamous epithelium of the anus & perianal skin.[3]

In live persons the color of the line is white, hence the name.

It is named for John Hilton.[4]

See also


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