Efficacy and Safety of Transcutaneous Posterior Tibial Nerve Stimulation on Fecal Continence in Patients Undergoing Surgery for Rectal Neoplasia

Rectal neoplasia is one of the most prevalent cancers in Spain, and the treatment ofchoice is total mesorectal excision (TME), as it has demonstrated significant oncologicalimprovements. However, mesorectal excision is not without complications, and patientsoften experience altered bowel function in the form of low anterior resection syndrome(LARS), as well as erectile dysfunction. However, few studies evaluate faecalincontinence, as most focus on oncological outcomes.The aim of our study is to evaluate the efficacy and safety of posterior tibial nervestimulation on fecal incontinence, sexual dysfunction, and quality of life in patientswho underwent to rectal surgery for rectal neoplasia.It will be conducted a randomized clinical trial (1:1) with two arms: half of thepatients will receive posterior tibial nerve stimulation, while the other half willundergo stimulation with subtherapeutic doses. Faecal incontinence will be assessed usingthe LARS and Wexner questionnaires, and quality of life and sexual function will beassessed using the Fecal Incontinence Quality of Life Scale (FIQLS) and the ColorectalCancer Quality of Life Questionnaire (QLQ‐CR38), at one month, six months and one yearafter surgery.