[ sŭb′ĭn-və-lōō′shən ] n. Failure of the uterus to return to its normal size following childbirth.

What causes involution of uterus?

This process is primarily due to the hormone oxytocin. The completion of this period is defined as when the diameter of the uterus returns to the size it is normally during a woman’s menstrual cycle.

How do you treat subinvolution?

Methods for treating patients with subinvolution of the placental site include conservative medical therapy, hysterectomy, and fertility-sparing percutaneous embolotherapy.