Regional anesthesia guided by ultrasound in the pudendal nerve territory

  • María Fernanda Rojas-Gómez Universidad Industrial de Santander, Anaesthetist, Universidad Militar Nueva Granada, Fellow in Ultrasound-guided regional anaesthesia of the CLASA-WFSA-SBA Program, Anaesthetist, Sociedad Especializada de Anestesiología SEA S.A. Clínica Carlos Ardila Lulle, Floridablanca, Colombia
  • Rafael Blanco-Dávila Anaesthesia Department, Corniche Hospital, Abu Dhabi, United Arab Emirates
  • Verónica Tobar-Roa Universidad Autónoma de Bucaramanga, Urologist, Pontificia Universidad Javeriana, Master in Clinica Research on Organ, Tissue and Cell Donation and Transplant, Universidad de Barcelona, Urologist, Centro Urológico Foscal CUF, Floridablanca, Colombia
  • Ana María Gómez-González Universidad Autónoma de Bucaramanga, First Year Resident of Urology, Universidad Autónoma de Bucaramanga, Floridablanca, Colombia
  • Ana María Ortiz-Zableh Intern, Pontificia Universidad Javeriana. Bogotá, D.C., Colombia
  • Alfredo Ortiz-Azuero Universidad del Rosario, Urologist, Fundación Puigvert Barcelona, Urologist, Centro Urológico Foscal CUF, Floridablanca, Colombia
Keywords: Ultrasonography, Ultrasonography interventional, Pudendal nerve, Anesthesia regional, Nerve block



Pudendal nerve blocks have a wide range of clinical applications for the management of acute post-operative pain in urologic, gynecological surgery, in coloproctology, as well as in pain medicine for differential diagnosis, and for the management of pudendal neuropathies. However, despite its benefits it is infrequently used.


To perform a detailed description of the most recent ultrasound-guided techniques with the aim of encouraging safe and reproducible learning.

Materials and methods:

We have performed a broad, non-systematic review of the literature through Medline, Embase and Science Direct between 1985 and 2016, to evaluate the most relevant articles, using the following key words: pudendal nerve anatomy, pudendal nerve, pudendal nerve blocks, pudendal nerve ultrasound, pudendal neuralgia, nerve entrapment, chronic pain, Alcock canal, and pelvic pain. The search was limited to articles published in Spanish, English and French.


Recent descriptions were found of a large number of anatomic variants, which are described in detail and shown in graphic documents in order to facilitate the sonoanatomic correlation of nerve location as a guide for the performance of the pudendal nerve block through the different approaches.


The deep and detailed knowledge of the anatomy of the pudendal nerve and its variations is essential for the realization of Regional Anesthesia techniques guided by images. These promising techniques should continue to be evaluated with clinical studies.


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How to Cite
Rojas-Gómez MF, Blanco-Dávila R, Tobar-Roa V, Gómez-González AM, Ortiz-Zableh AM, Ortiz-Azuero A. Regional anesthesia guided by ultrasound in the pudendal nerve territory. Colomb. J. Anesthesiol. [Internet]. 2017Jul.1 [cited 2022Aug.14];45(3):200–209. Available from:


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How to Cite
Rojas-Gómez MF, Blanco-Dávila R, Tobar-Roa V, Gómez-González AM, Ortiz-Zableh AM, Ortiz-Azuero A. Regional anesthesia guided by ultrasound in the pudendal nerve territory. Colomb. J. Anesthesiol. [Internet]. 2017Jul.1 [cited 2022Aug.14];45(3):200–209. Available from:

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