Uterine prolapse occurs when pelvic floor muscles and ligaments stretch and weaken and no longer provide enough support for the uterus. Learn about symptoms and possible treatments, including surgical repair, for a weakened pelvic floor that causes the uterus to descend into the. Uterine prolapse is when the pelvic floor muscles are no longer strong enough to support the uterus correctly. Learn more from WebMD about the causes and treatments of a prolapsed uterus, a condition in which the pelvic ligaments, muscles and. Learn about uterine prolapse, a condition where the uterus slips out of position. The pelvic muscles and ligaments hold the uterus in place.