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Sulcus nervi dorsalis penis/clitoridis: anatomical and clinical implications

Author(s): Sedy J

Journal: Neuroanatomy
ISSN 1303-1783

Volume: 6;
Issue: 1;
Start page: 58;
Date: 2007;
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Keywords: neuroanatomy | anatomy | dorsal nerve of penis | dorsal nerve of clitoris | pubis | ventral arc | vertical ridge | sex determination | Alcock’s syndrome

Sulcus nervi dorsalis penis/clitoridis is a distinct groove located on the inferior ramus of pubis and ventralsurface of the body of pubis. In male, it accomodates the dorsal nerve of penis whereas in female the dorsalnerve and artery of clitoris. Close relation of dorsal nerve of penis/clitoris and pubis, represented by the courseof sulcus nervi dorsalis penis/clitoridis has a major impact in surgical disciplines. Exact preparation of thedorsal nerve of penis is crucial in correct performance of conversion of genitalia in patients with transsexualismin reconstruction of posterior urethra, in hypospadia, during performance of penile blocade during circumcisionand in revascularization surgery of erectile dysfunction. The role of sulcus nervi dorsalis penis in the Alcock’s syndrome is discussed. Similarly, it is advisable to takecare of the dorsal nerve of clitoris inside sulcus nervi dorsalis clitoridis during reduction clitoridoplasty inpatients with adrenogenital syndrome and during the insertion of transobturator vaginal tape. Injury of dorsalnerve of penis/clitoris leads to hypestesia or anestesia of glans penis/clitoridis. The injury of dorsal artery ofclitoris leads to hematoma. It is possible to use sulcus nervi dorsalis penis/clitoridis for sexing of isolated pubis for antropological orforensic purposes. Lateral border of sulcus nervi dorsalis penis corresponds to vertical ridge and lateral borderof sulcus nervi dorsalis clitoridis to ventral arc – two parameters, which are parts of the Phenice’s method forsexing of isolated pubic bones.
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