They are defined as those who are connected by the lower half of their body instead of the upper torso. In over 60 per cent of such cases, one of the twins dies or is stillborn. But these toddlers survived all the odds. The brothers, however, had to lie flat for their first three years as their unique body structure prevented them from sitting up. The case report says that surgeons amputated their third leg - which is often two fused legs - and stabilised their hips and legs so the brothers could sit upright independently. A follow-up appointment three months after the surgery revealed that the twins didn't suffer any complications.