The site of female ligation is usually in the isthmus of the fallopian tubes bilaterally.
The fallopian tubes are located on both sides of the uterus, one on each side, and are divided into four parts starting from the uterus: the intertubal part, the isthmus of the fallopian tube, the jugular part of the fallopian tube, and the umbilical end of the fallopian tube. The isthmus of the fallopian tube is a narrower part of the fallopian tube with relatively less blood supply, so when women are ligated, the isthmus of the fallopian tube is usually chosen bilaterally.
Tubal ligation involves ligating both fallopian tubes at the same time, so as not to prevent one side from being open and effective as a contraceptive. Tubal ligation is a common and effective form of contraception, and can be performed by a specialized doctor according to the patient’s specific situation. It is advisable to consult a medical professional for details.