Can you get pregnant after a tubal ligation?

WebMD explains that although a tubal ligation is a permanent form of birth control, pregnancy occurs in less than 2% of women who have had this procedure. The procedure is thus not a perfect preventive measure to stop pregnancy.

Tubal ligation, or "having one's tubes tied," is a procedure where an ob/gyn or surgeon cuts and ties or cauterizes a woman's Fallopian tubes, thereby preventing eggs from entering the uterus. Sperm have no access to the eggs, and pregnancy is thereby prevented. A woman's hormone production and menstrual cycle should not be affected by a tubal ligation. WebMD states that a tubal ligation is reversible and has a higher success rate than male vasectomy reversals.