What is side incision during labor? Side incision during labor refers to using a scalpel to make an incision on the left and right sides of the vagina during labor to increase the size of the vaginal opening to facilitate the smooth passage of the fetus. Lateral incision is a relatively common delivery operation. Some women are unable to give birth on their own during delivery and need to undergo an incision in order to give birth smoothly. Possible risks of side-to-partum incision Although side-to-partum incision can help the fetus pass through the birth canal smoothly, it may also bring certain risks. First, the scalpel may cut the perineal sphincter, resulting in longer wound healing time; second, the hand