en Oncology Oncology Original Research Original Research <p> <strong> Background </strong>:This study was performed to evaluate the effect of Stoppa hernia repair on sexual function of the patients with bilateral inguinal hernia. </p><p> <strong> Methods: </strong>In a prospective follow-up study, 50 patients with bilateral inguinal hernia were investigated to assess sexual function before and 1 and 6 months after standardized Stoppahernioplasty using the International Index of Erectile Function (IIEF) questionnaire. The mean scores obtained on pre- and postoperative visits for all domains of sexual function were analyzed and compared with the Friedman and paired Wilcoxon tests. </p><p> <strong> Results: </strong>The mean score of IIEF at the first month after surgery was significantly declined compared to that before surgery and 6 months after surgery (P< 0.001), while the difference between preoperative score and the score at 6 months after surgery was not significant. </p><p> <strong> Conclusion: </strong>Bilateral inguinal mesh repair with Stoppa technique can decreased sexual activity of the patients at one month after surgery, nevertheless it returns to its initial condition at 6 months after surgery. This suggests that the Stoppa technique does not affect the sexual function of patients with bilateral inguinal hernia. </p><p> <strong> </strong></p> Hernia, Inguinal, Herniorrhaphy, Sexual Behavior. 296 300 http://mjiri.iums.ac.ir/browse.php?a_code=A-10-1-678&slc_lang=en&sid=1 Ali Jangjoo jangjooa@mums.ac.ir 200319475328460012824 200319475328460012824 No Surgical Oncology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. Mohammad Reza Darabi Mahboub darabimmr@mums.ac.ir 200319475328460012825 200319475328460012825 No Department of Urology, Imam Reza Hospital, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. Mostafa Mehrabi Bahar mehrabim@mums.ac.ir 200319475328460012826 200319475328460012826 No Surgical Oncology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. Monavvar Afzalaghaee afzalaghaeem1@mums.ac.ir 200319475328460012827 200319475328460012827 No Department of Biostatistics, Faculty of Health Sciences, Mashhad University of Medical Sciences, Mashhad, Iran. Ali Najib Jalali 200319475328460012828 200319475328460012828 No Surgical Oncology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran. Mohsen Aliakbarian aliakbarianm@mums.ac.ir 200319475328460012829 200319475328460012829 Yes Surgical Oncology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.