The last pelvic bone connecting Regina and Renata Salinas Fierros was cut at 7:20 p.m. after a long and complex surgery at Childrens Hospital Los Angeles.

Doctors planned to work through the night reconstructing the girls' chest walls and pelvis regions and sewing up surgical wounds. The girls remained sedated.

The identical twins were fused at the front, but had separate heads, necks, shoulders, hearts, lungs, arms and legs. Regina was born with one kidney.

The girls shared part of the small intestine and the entire large intestine. Doctors had debated about how to split the large intestine and it was not immediately clear how the organ was eventually divided.

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