Abstract Background Fecal incontinence is a frequent and debilitating condition that may result from a multitude of different causes. It is defined as the uncontrolled passage of faeces or gas over at least 1 month’s duration, in an individual of at least 4 years of age, who had previously achieved control. Aim of Work to evaluate the outcome of overlap anal sphincter repair as regard the anal continence and postoperative complications. Patients and Methods this is a prospective clinical trial was conducted on thirty (30) patients presented to Ain-Shams University hospitals with anal sphincter injury that were operated upon by a modified overlap repair done by the same surgical team. Endoanal ultrasonography was done and Wexner continence score was estimated for all cases preoperatively and postoperatively. All patients sharing in the study were fully informed about the procedure they had with a written informed consent. Results In this study the mean preoperative Wexner score was 12.9 and the mean postoperative Wexner was 4.8; this reduction was found to be significant (p value=0.001). Also endoanal ultrasound showed that tear size significantly reduced among the studied cases(p value=0.001). Conclusion from this study that overlapping sphincter repair is an effective method in the treatment of faecal incontinence in patients with repairable sphincter defects. However, long term follow up is required to confirm its efficacy.