The cervix is closed throughout the pregnancy to protect the fetus. In some cases, the cervical opening may be lax or open up later during pregnancy.
To correct this abnormality, cervical cerclage is performed. The cervix is closed or made tighter by stitching its opening with surgically designed thread or it is closed with a band.
For more information, you can consult Dr Kausha Shah, one of the best Gynecologist in Dahisar.