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“Spider twins” are born with 3 legs after their mother’s normal pregnancy

The phenomenon happened in Indonesia and the Siamese underwent surgery to improve mobility


A rare phenomenon of conjoined twins connected at the pelvis and sharing three legs, a penis and an anus has occurred in an Indonesian family. Three years after their birth, surgeons performed a risky operation, allowing them to sit down and eventually stand up.

A phenomenon that affects one in two million has affected a pair of twins born in Indonesia who are fused in the pelvic area and share three legs, a penis and an anus. They also share the bladder, rectum, and intestines.

The boys are the result of their parents’ third pregnancy with no family history of congenital anomalies and, according to the article published on The sunthe mother had no complications during pregnancy before giving birth to the twins.

“The mother reported that she had not consumed any supplements, medications or traditional herbal blends and that she had regularly monitored her pregnancy with a local midwife,” noted a report published in American Journal of Clinical Case Studies.

Although conjoined twins are rare, occurring in 50,000 out of 200,000 births, those joined in the pelvis – called ischiopagus – are even rarer, accounting for only 6% to 11% of all conjoined twins.

Due to the position of their bodies, the twins, born in 2018, spent the first three years of their lives lying on their backs, unable to stand or even sit without assistance.

After debating whether or not to try to separate the twins, surgeons at Bandung’s Hasan Sadikin Hospital decided to make the trunks more upright by reconstructing the pelvic bones to allow the twins to sit and possibly stand. The third leg was also removed.

Curiosities about twin brothers: probabilities and characteristics
Curiosities about twin brothers: probabilities and characteristics

The surgery was performed when the twins were still three years old and the boys had no complications after the operation.

“The last follow-up was three months after surgery and no complications were reported. An improvement in mobility was observed, as both patients were able to flex the upper torso,” wrote the doctors involved in the treatment.

Although the boys survived the high-risk surgery, doctors noted that there are few studies on the long-term prognosis of ischiopagus conjoined twins after surgery.

“Unfortunately, these twins tend to have a shorter lifespan than non-conjoined twins due to internal complications,” they noted.

Source: Terra

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