Dr. Muñoz

Dr. Muñoz


Name: Arantxa Muñoz Duyos


  • Medical doctor in Universitat Autònoma de Barcelona. Licence in 1996.
  • Training in General Surgery: Hospital Universitari MútuaTerrassa 1998-2003.
  • PhD Thesis, in General Surgery: Universitat Autònoma de Barcelona. 2008. Cum laude. Project: “Sacral nerve Stimulation in fecal incontinence. Clinical results and Cost-effectiveness”.
  • Stage in Aarhus Anal Physiology Department. Aarhus Universitary Hospital. Aarhus (Denmark). April 2011.
  • Colorectal Fellow in Pelvic Floor Surgery. Colorectal Surgical Department. Oxford (UK). February-July 2012.

Current job and Degree

Consultant Colorectal Surgeon at Colorectal Unit in General Surgical Department. Hospital Universitari MútuaTerrassa. Terrassa. (Barcelona). Spain.


  • 2003-2004. Fellowship in Colorectal Surgery at Hospital Universitari de Bellvitge. (Barcelona)
  • Since 2004. Consultant Colorectal Surgeon at Colorectal Unit. Hospital Universitari MútuaTerrassa. Terrassa (Barcelona). Spain.
  • Since 1998. Member of the Spanish Society of Surgery (AEC).
  • Since 2002. Member of the Spanish Society in Coloproctology (AECP).
  • 2004-2008: Member of the Director group at the Colorectal Section in the Spanish Society of Surgeons.
  • 2008-2010: Member of the Director group at the Spanish Society in Coloproctology (AECP).
  • 2012. Foundational member of the first Spanish Patient’s Association in Anal Incontinence (Asociación de pacientes con Incontinencia Anal: ASIA).

Multicentric studies and working groups

  • 1999-2002: Multicentric European feasability study in Sacral Neuromodulation for Fecal Incontinence. Study MDT-301.
  • 2006. Working Spanigh Group in Botulinic Toxin in the treatment of anal fissure.
  • Since 2008. Working Spanish Group in Stem Cells in the treatment of anal fistula.
  • 2011-2016. Multicentric spanish study in Sacral Neuromodulation for Slow Transit Constipation.
  • Since 2012. Working Spanish Group in Fast Track Surgery (GERM).
  • 2014. Working Spanish group in Technical Details in Sacral Neuromodulation. Elaboration of the Spanish Guideline in Sacral Neuromodulation.
  • Since september 2015. Multicentric study: The effect of fiber in fecal incontinence.
  • Since november 2016. Multicentric study: Functional outcome in patients treated of Rectal Cancer. Urinary, sexual and defecatory disorders.

Educational Activities

  • Since 2009. Universitary teacher in Master Online in Colorectal Surgery. Zaragoza University.
  • Since 2012. Course director and teacher in the National Course in Sacral Neuromodulation: 4 to 5 annual Workshops in Sacral Neuromodulation in our Hospital. More than 300 doctors trained.
  • Since 2015. Course director and teacher in the Universitary Course in Pelvic Floor Diseases for Colorrectal surgeons. Miguel Hernández University. Alicante.
  • Referee in these journals: Cirugía Española, Disease of Colon and Rectum, Colorectal Diseases, Techniques in Coloproctology.

Scientific presentations

More than 80 scientific presentations at national and international scientific meetings (round table moderations, invited lectures, oral presentations and posters).

Supervisor or member of PhD evaluation team

  • Co-supervisor for 2 doctors on their PhD projects.
  • Judith Camps, MD. Pre-doctoral project to get the Investigational initial degree to access to the PhD program. June 2008
  • Laura Lázaro, MD. PhD project: “Bi-root sacral nerve stimulation in fecal incontinence”. June 2018
  • PhD evaluation team.
  • Marta Jiménez Toscano. “Transcutaneal posterior tibial neuromodulation in the treatment of fecal incontinence). University Rey Juan Carlos. Madrid, June 2013.
  • María Lluïsa Surrallés Calonge. “Prognosis significantce of K-Ras in colonic cancer”. Univesitat Autònoma de Barcelona. Barcelona, September 2013.

Publications on defecatory disorders and proctology diseases

Montero J, Muñoz –Duyos A, Del Río C. Transtornos de la función esfinteriana. Fisiopatología y estudio neurofisiológico. Revista de Neurología 2003;36(11):1065-1072.

Muñoz-Duyos A, Montero J, Navarro A, Del Río C, Marco C. Incontinencia fecal: neurofisiología y neuromodulación. Cir Esp 2004;76(2):65-70.

Muñoz-Duyos A, Navarro A, Rius J, Martí-Gallostra M, Marco C. Estimulación de raíces sacras como tratamiento de la incontinencia fecal. Resultados preliminares. Cir Esp 2004;76(3):169-176.

Muñoz-Duyos A, Navarro-Luna A, Marco-Molina C. Propuesta de una nueva clasificación de consenso para la incontinencia fecal. Cir Esp. 2008 May;83(5):235-41. Review.

Camps Lasa J, Navarro Luna A, Muñoz Duyos A, García Domingo MI, Marco Molina C. Aggressiv pelvic perineal angiomyxoma in males. Cir Esp. 2008 Aug;84(2):102-3.

Muñoz Duyos A, Navarro Luna A. Estimulación de raíces sacras en el tratamiento de la incontinencia fecal. Diez años de experiencia. EditoriaL. Cirugía Española. Marzo 2010.

Matzel K, Kamm MA, Stosser M, Baeten CG, Christiansen J, Madoff R, Mellgren A, Nicholls RJ, Rius J, Rosen H and MDT 301 Study Group (Muñoz-Duyos). Sacral Nerve Stimulation in fecal incontinence. Lancet 2004;363:1270-76.

Brosa M, Muñoz-Duyos A, Navarro-Luna A, Rodriguez JM, Serrano D, Gisbert R, Dziekan K, Segú JL. Cost-effectiveness analysis of sacral neuromodulation (SNM) with Interstim for fecal incontinence patients in Spain. Curr Med Res Opin. 2008 Mar;24(3):907-18.

Muñoz-Duyos A, Navarro-Luna A, Brosa M, Pando JA, Sitges-Serra A and Marco-Molina C. Clinical and cost effectiveness of sacral nerve stimulation for faecal incontinence. British Journal of Surgery, 2008 Aug;95(8):1037-43.

Herreros MD, Garcia-Arranz M, Guadalajara H, De-La-Quintana P, Garcia-Olmo D; FATT Collaborative Group (Muñoz-Duyos A) . Autologous expanded adipose-derived stem cells for the treatment of complex cryptoglandular perianal fistulas: a phase III randomized clinical trial (FATT 1: fistula Advanced Therapy Trial 1) and long-term evaluation. Dis Colon Rectum. 2012 Jul;55(7):762-72.

Ribas Y, Hotouras A, Muñoz Duyos A. Letter to the Editor. Comment on Ribaric et al: STARR with CONTOUR TRANSTAR device for obstructed defecation síndrome: one-year real-world outcome of the European TRANSTAR registry. Internationa Joural of Colorectal Disease, July 2014.

Ribas Y, Hotouras A, Muñoz-Duyos A, Chan CL. Shincterotomy in women with chronic anal fissure? Are we asking for trouble? Dis Colon Rectum 2014, 57:e404.

Ribas Y, Muñoz-Duyos A, Navarro-Luna A. Pelvic organ prolapse - a tailored approach. Dis Colon Rectum. 2015 Jun;58(6)

Altomare D, Giuratrabocchetta S, Knowles C, Muñoz-Duyos A, Robert-Yan J, Matzel K. Long-term outcome of Sacral Nerve Stimulation for fecal incontinence in Europe. Br J Surg. 2015 Mar;102(4):407-15.

Muñoz-Duyos A, Navarro-Luna A. The European Consensus Statement on sacral neuromodulation. Colorectal Dis. 2015 Jul;17(7):644-6.

Ribas Y, Muñoz-Duyos A, Navarro-Luna A. Bilateral partial miotomy of the puborectalis for dyssynergic defecation: an unaffordable risk. Int J Colorectal Dis. 2016 Aug;31(8):1515-6.

Ribas Y, Aguilar F, Jovell-Fernández E, Cayetano L, Navarro-Luna A, Muñoz-Duyos A. Clinical application of the LARS score: results from a pilot study. Int J Colorectal Dis. 2016 Oct 29. [Epub ahead of print]

Muñoz-Duyos A, Navarro-Luna A, et al. Gracilis muscle interposition for rectourethral fistula after laparoscopic prostatectomy. A prospective evaluation and long-term follow-up. Diseases of the colon and rectum. Accepted Set 2016. [Epub ahead of print]

Lagares-Tena L, Corbella-Sala Cristina, Navarro-Luna Albert, Muñoz-Duyos A. Sacral neuromodulation in a fecal incontinence patient with unknown sacral partial agenesis. Colorectal Diseases. Colorectal Dis. 2017 May;19(5):502-504.

Muñoz-Duyos A, Lagares-Tena L, Vargas-Pierola H, Navarro-Luna A. High-Resolution circuit in the diagnosis of faecal incontinence. Patient satisfaction. Cirugía Española. Cir Esp. 2017 May;95(5):276-282.

Muñoz-Duyos A, Lagares-Tena L, Delgado-Rivilla S. Treatment of chronic anal fissure with sacral neuromodulation: a pilot study. Tech Coloproctol. 2017 Sep;21(9):761-762. doi: 10.1007/s10151-017-1683-z. Epub 2017 Sep 11.

Matzel KE, Chartier-Kastler E, Knowles CH, Lehur PA, Muñoz-Duyos A, Ratto C,Rydningen MB, Sørensen M, van Kerrebroeck P, de Wachter S. Sacral Neuromodulation: Standardized Electrode Placement Technique. Neuromodulation.2017 Dec;20(8):816-824. doi: 10.1111/ner.12695. Epub 2017 Oct 4.

Lagares-Tena L, Millán-Paredes L, Lázaro-García L, Navarro-Luna A, Delgado-Rivilla S, Muñoz-Duyos A. Sacral neuromodulation in patients with congenital faecal incontinence. Special issues and review of the literature. Tech Coloproctol. 2018 Feb;22(2):89-95.

Book chapters (first Author)

A Muñoz-Duyos, J Rius, A Navarro, C Marco. Neuromodulación en la incontinencia fecal. En: Disfunciones del suelo pelviano. Ediciones Mayo. Barcelona, Noviembre 2003.

A Muñoz-Duyos. Estimulación de raíces sacras en el tratamiento de la incontinencia fecal. “Actualización en la rehabilitación de la patología del suelo pélvico". ISBN-13:693-8985-0, 2011. Capítulo 5.1.6. P:93-97.

A Muñoz-Duyos, Y Ribas, A Navarro. Quality of life Considerations. In: Managing Anal Incontinence. By M Devesa. Pertinax Publishing. In press (2014).

A Muñoz-Duyos, A Rada-Palomino, L Hernández-Giménez. "Rubber band ligation, Sclerotherapy, Infrared coagulation and others: techniques and results in the treatment of hemorrhoids" in 2nd Coloproctology-volume “Hemorrhoids”. In press (2017).