Several factors can contribute to an incompetent cervix, including:
Previous cervical surgery, such as a LEEP procedure or cone biopsy. Congenital cervical anomalies, which might be genetic or due to exposure to certain substances like DES (diethylstilbestrol). Trauma to the cervix from previous difficult deliveries or multiple dilation and curettage (D&C) procedures. Structural abnormalities such as a bicornuate uterus.
