If you are pregnant and have a short cervical canal, you may have cervical insufficiency. If it is true that the cervical canal is not functioning properly, surgery is required, which is called cervical cerclage. If the operation is not possible, the shortened cervical canal may lead to miscarriage at a later stage. There are two main types of cervical cerclage, one is laparoscopic endocervical cerclage and the other is transvaginal cerclage. Transvaginal cervical cerclage is more commonly used nowadays, and it is not too difficult and does not cause complications. After cervical cerclage, the cervical canal may not continue to shorten and the pregnancy may continue until full term, usually at 36-37 weeks of pregnancy.