Long-term efficacy of percutaneous tibial nerve stimulation for faecal incontinence and a new approach for partial responders.

"Declarations Conflict of interestThe authors declare that they have no conflict of interest. Ethical approvalApproval was obtained from the ethics committee of University Hospital of Elche. The procedures used in this study adhere to the tenets of the Declaration of Helsinki. Informed consentWritten informed consent was obtained from all subjects including for ongoing use of medical records in future related research. Conflict of interest The authors declare that they have no conflict of interest."

"Funding Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature."

"This research did not receive grants from any funding agency in the public, commercial, or not-for-profit sectors. The manuscript has been prepared in accordance with the style of the journal, and all authors have approved of its contents. This manuscript is not being considered for publication elsewhere and the findings of this manuscript have not been previously published. This study had ethical approval from the local Ethics Committee (PI 66/2020) in 2020 and registered at ClinicalTrial (NCT05016453) in 2021, retrospectively registered. Written informed consent was obtained from all subjects."