Final answer:
Uterine inversion is a rare complication during childbirth where the uterus turns inside out. It is usually caused by forceful fundal pressure and is treated by manually pushing the uterus back into its normal position.
Step-by-step explanation:
Uterine inversion is a rare but serious complication that can occur during childbirth. It happens when the uterus turns inside out and protrudes through the cervix. The most common cause of uterine inversion is forceful fundal pressure, which is excessive pressure applied to the top of the uterus. The treatment for uterine inversion is manual replacement, where the uterus is carefully pushed back into its normal position by a healthcare provider.