Background: One of the complications of Cesarean sec-tion, cesarean scar defect, has been shown to be associated with various gynecological and obstetric problems. Addi-tionally, cesarean scar defect may increase the risk for com-plications in gynecological procedures such as intrauterine device placement, evacuation, and embryo transfer.
Objective: to investigate the effect of hysteroscopic cor-rection of symptomatic caesarian scar defect in women with an explained secondary infertility.  
Patients and methods: A prospective, randomized study was conducted on women suffered from secondary delayed pregnancy after caesarean section with a scar at the site of the caesarean wound, who attended at the Obstetrics and Gyne-cology department, Menoufia University Hospitals, during the period between January 2021 and April 2022. 
Results: most patients in group A had positive pregnancy rate (53.33%) than patients in group B (23.33%) with a sig-nificant difference (P=0.017). 
Conclusion: In women with secondary infertility and a re-sidual myometrial thickness of less than 3 mm, hysteroscop-ic correction of a caesarean scar defect offers a minimally invasive method with a high success rate and no risks.