Difference Between Monofilament Versus Multifilament Suture Material in Isthmocele Formation

Inclusion Criteria: * Age: 20-45 years old * Singleton pregnancy. * Gestational age between 37 completed weeks to 42 weeks. * Patients undergoing elective primary caesarean section Exclusion Criteria: * History of uterine surgery (e.g. hysterotomy, myomectomy, perforation, caesarean section). (to be able to differentiate between the recent CS scar and the old scar) * Abnormal placental invasion (placenta previa and accrete ) ( more liable to undergo Cesarean hysterectomy) * Uterine anomalies (e.g., septum, Mullerian anomalies or fibroids). (may be localized at the suture line and therefore affect the scar) * Drugs intake that affects bleeding or tissue healing e.g., anti-coagulants, immunosuppressive drugs and chronic use of steroids (more than 14 days pre-operative) * Any medical Co-morbidity (diabetes mellitus, Hypertension and Thyroid abnormalities) (more liable to affect the healing)