The rare operation brought together surgeons, hospitals and charities across two countries, with doctors saying the girls now have opportunities that would not have been possible before
A miracle 24-hour surgery and a team of specialists successfully separated conjoined twin girls in an extraordinary operation.
Hiyab and Wuhbto travelled from their home in Ethiopia to Missouri in February 2025 for one of the rarest and most complex procedures carried out in the United States. The two-year-old sisters were joined at the crown of their heads and required months of painstaking preparation before doctors could attempt to separate them.
More than 300 hours of planning went into the operation at SSM Health Cardinal Glennon Children’s Hospital, with the surgery itself lasting more than 24 hours. Doctors said the procedure demanded “sublime precision” and close coordination between multiple specialist teams.
Since their separation, Wuhbto has undergone a further cranioplasty to complete the repair of her skull, while Hiyab is preparing for the same procedure later this autumn. The girls turned two in March, shortly after their separation surgery.
Dr. Andrew J. White, the hospital’s chief medical officer said: “Partnership, collaboration and expertise were the building blocks of this incredible feat.”
The hospital described the operation as “one of the most complex and rare paediatric procedures performed in the United States.”
Twins joined at the head are exceptionally rare, occurring in around one in 2.5million live births and accounting for fewer than 6% of conjoined twins, according to the National Library of Medicine. Only 62 separation attempts have been documented among 69 well-recorded cases of craniopagus twins worldwide.
The girls’ treatment involved a huge international effort, bringing together hospitals, charities and organisations in both the US and Ethiopia. Among those involved were SSM Health Cardinal Glennon Children’s Hospital, Ranken Jordan Pediatric Bridge Hospital, World Pediatrics, Lola Children’s Home in Ethiopia, Ronald McDonald House Charities and Ethiopian Airlines.
Dr. Hossain Marandi, president of SSM Health Cardinal Glennon Children’s Hospital, said: “This story reflects the very best of who we are, bringing hope, healing, and opportunities once thought impossible to children and families when they need it most. From our caregivers and clinical teams to our community and global partners, countless individuals united around a shared mission to create new possibilities for these two young girls and their future.”
The twins continue to receive care in the United States as doctors monitor their recovery and development.
Dr. Joanna Kemp, head neurological surgeon at the hospital, said: “It is still too soon to know exactly what their long-term development will look like but what we do know is that they now have opportunities that would not have been possible without this intervention.”

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