Conjoined twins with fused brains separated. 7 surgeries, over 100 medical staff involved, 33 hours of operations time in Rio de Janiero. Twins were 3-year-olds Bernardo and Arthur Lima. Another twist in this story is that the medical staff practiced the operation in virtual reality for 6 months before the operations. No only that but the VR wasn't done in one place -- it was done over the internet between Brazil and the UK.
Conjoined twins separated with the help of virtual reality - BBC News
