The rarity of the condition as well as the challenge it presents in separating the twins has been difficult to understand. In recent years, with advancing medical technology, physicians have been able to successfully separate Ischiopagus twins. However, it depends on the organs shared, how closely joined the twins are, and what risks could rise from separating the twins during surgery. Since Ischiopagus twins usually share a gastrointestinal tract and other organs in the pelvic region, it takes months of planning to decide whether or not separation of the twins outweighs the complications and risks associated with surgery and reconstruction of organs. Surgery to separate conjoined twins has allowed surgeons to be able to study the mechanisms of embryogenesis as well as the physiological consequences of parabiosis.Separating ischiopagus tripus conjoined twins usually leaves the twins with one leg each. Prognosis
Depending upon what organs are shared among the twins and if they are surgically separable, usually only one of the twins makes it through the surgery or they both die due to complications either before or during the surgery. Now that successful surgery has been reported and more findings are becoming available due to research and pre-surgery evaluation, better surgery techniques and procedures will be available in the future to help increase the survival rate of ischiopagus twins as well as other conjoined twins. Epidemiology
Ischiopagus is a rare anomaly occurring in about 1 in every 100,000 live births and occurring in 1 out of 10 conjoined twin births.
Urinary bladder disease includes urinary bladder inflammation such as cystitis, bladder rupture and bladder obstruction (tamponade). Cystitis is common, sometimes referred to as urinary tract infection (UTI) caused by bacteria, bladder rupture occurs when the bladder is overfilled and not emptied while bladder tamponade is a result of blood clot formation near the bladder outlet. Cystitis
Cystitis is a urinary bladder inflammation that results from any one of a number of distinct syndromes. It is most commonly caused by a bacterial infection in which case it is referred to as a urinary tract infection. Bladder trauma
Bladder rupture (rupture of bladder, N32.4) may occur if the bladder is overfilled and not emptied. This can occur in the case of binge drinkers who have consumed large quantities of fluids, but are not conscious of the need to urinate due to stupor. This condition is very rare in women, but does occur. Signs and symptoms include localized pain and uraemia (poisoning due to reabsorbed waste). Intra- and extraperitoneal rupture
Bladder rupture is divided into intraperitoneal and extraperitoneal rupture, with the latter encompassing 85% of post-traumatic bladder rupture. Intraperitoneal rupture is both more rare and associated with greater morbidity, requiring surgical repair due to the risk of non-healing and gram negative sepsis. Bladder tamponade
Bladder tamponade is obstruction of the bladder outlet due to heavy blood clot formation within it. It generally requires surgery. Such heavy bleeding is usually due to bladder cancer. See also
Underactive bladder
Overactive bladder

References
External links

http://kidney.niddk.nih.gov/kudiseases/topics/bladder.asp