Report of an inferior rectal nerve variant arising from the S3 ventral ramus
10.5115/acb.2019.52.1.100
- Author:
Graham DUPONT
1
;
Joe IWANAGA
;
Rod J OSKOUIAN
;
R Shane TUBBS
Author Information
1. Seattle Science Foundation, Seattle, WA, USA. joei@seattlesciencefoundation.org
- Publication Type:Case Report
- Keywords:
Pudendal nerve block;
Inferior rectal nerve variations;
Anal canal;
Perineum
- MeSH:
Anal Canal;
Lumbosacral Plexus;
Perineum;
Pudendal Nerve
- From:Anatomy & Cell Biology
2019;52(1):100-101
- CountryRepublic of Korea
- Language:English
-
Abstract:
In surgical approaches to the perineum in general and anal region specifically, considering the possible variations of the inferior rectal nerve is important for the surgeon. Normally, the inferior rectal nerve originates as a branch of the pudendal nerve. However, during routine dissection, a variant of the inferior rectal nerve was found where it arose directly from the third sacral nerve ventral ramus (S3). Many cases have described the inferior rectal nerve arising independently from the sacral plexus, most commonly from the fourth sacral nerve root (S4); however, few cases have reported the inferior rectal nerve arising from S3. Herein, we describe a variant of the inferior rectal nerve in which the nerve arises independently from the sacral plexus.
