(A) Membranes herniating through effaced and widely dilated cervix. (B) Replacement of membranes into the uterus by gentle traction on stay sutures. (C) Placement of 2 rows of encircling sutures. (D) Final appearance of the cervix.
Reproduced with permission from Olatunbosun, OA, Dyck, F. Cervical cerclage operation for a dilated cerfix. Obstet Gynecol 1981; 57:166. Reprinted with permission from the American College of Obstetricians and Gynecologists.