Cervical cerclage, also known as cervical stitch, is a medical procedure used to reinforce and close the cervix during pregnancy to prevent premature birth or miscarriage. The cervix is the lower part of the uterus that opens and allows the baby to pass through during delivery. Sometimes, the cervix may become weakened or incompetent, leading to its premature opening and the risk of miscarriage or preterm labor.

The cerclage procedure involves the placement of sutures or stitches around the cervix to provide support and keep it closed. The aim is to reduce the pressure on the cervix from the growing baby and to prevent its early dilation. Cervical cerclage is usually performed during the first or early second trimester of pregnancy and is removed before delivery or during the onset of labor.