A  retroverted uterus (tilted uterus, tipped uterus) is a uterus that is oriented posteriorly, towards the back of the body. This is in contrast to the typical uterus, which is oriented forward (slightly "anteverted") toward the bladder, with the anterior part slightly concave. Depending on the source, one in three to five uteruses are retroverted, or oriented backwards towards the spine. Related terms
The following table distinguishes among some of the terms used for the position of the uterus:
A retroverted uterus should be distinguished from the following:

Additional terms include:

retrocessed uterus: both the superior and inferior ends of the uterus are pushed posteriorly
severely anteflexed uterus: a pronounced forward bend in an anteflexed uterus
vertical uterus: the fundus (top of the uterus) is straight up

Causes
In most cases, a retroverted uterus is a normal variation present from birth. There are other factors, however, that can cause the uterus to become retroverted. Pelvic surgery, pelvic adhesions, endometriosis, fibroids, pelvic inflammatory disease, or the labor of childbirth can change the position of the uterus to retroverted. Diagnosis
A retroverted uterus is usually noted during a routine pelvic examination or with an internal ultrasound.It usually does not pose any medical problems, though it can be associated with dyspareunia (pain during sexual intercourse) and dysmenorrhea (pain during menstruation). Fertility and pregnancy
Rarely, a retroverted uterus is due to a disease such as endometriosis, an infection or prior surgery. Those conditions, but not the position of the uterus itself, can reduce fertility in some cases.
It can include such acts as masturbation, inappropriate fondling themselves or others, having sex with another person; and in more extreme cases, sexual assault. These behaviors are unconscious, occur frequently without dreaming, and bring along clinical, social, and legal implications. It has a lifetime prevalence of 7.1% and an annual prevalence of 2.7%. Sleepwalking (somnambulism)
Sleepwalking has a prevalence of 1–17% in childhood, with the most frequent occurrences around the age of eleven to twelve. About 4% of adults experience somnambulism. Normal sleep cycles include states varying from drowsiness all the way to deep sleep. Every time an individual sleeps, he or she goes through various sequences of non-REM and REM sleep. Anxiety and fatigue are often connected with sleepwalking. For adults, alcohol, sedatives, medications, medical conditions and mental disorders are all associated with sleepwalking. Sleep walking may involve sitting up and looking awake when the individual is actually asleep, and getting up and walking around, moving items or undressing themselves. They will also be confused when waking up or opening their eyes during sleep. Sleep walking can be associated with sleeptalking. Sleep terrors (night terrors/ pavor nocturnus)
Sleep terror is the most disruptive arousal disorder since it may involve loud screams and panic; in extreme cases, it may result in bodily harm or property damage by running about or hitting walls. All attempts to console the individual are futile and may prolong or intensify their confused state. Usually they experience amnesia after the event but it may not be complete amnesia.