Lakshmi with her mother before the operation

Lakshmi Tatma was joined at the pelvis to what was, in effect, a headless, undeveloped twin.

A team of surgeons in the southern city of Bangalore operated on Lakshmi for 27 hours to separate her spinal column and kidney from that of her twin.

It is hoped the procedure will allow her to survive beyond adolescence.

"Lakshmi is stable and sound," the doctor leading the operation, Sharan Patil, told a news conference which was shown live on television channels across India.

'Optimistic'

"She has withstood the operation, she is safe and doing well," he said.

X-RAY OF LAKSHMI 1. Spine cut from the front to remove extra limbs 2. Wide gap between pelvic bones closed using bone grafts 3. More operations may be needed to correct club feet and rebuild pelvic floor muscles

Lakshmi is still on ventilation.

"We will keep a close watch on her for the next 48 to 72 hours and won't move from the hospital until she stabilises," Dr Patil said.

More than 30 doctors "worked relentlessly through the night to make the operation successful," he said and added that there was "no setback at any stage of the surgery".

Dr Patil said he was "optimistic about the child's survival".

The surgery began at 0700 local time (0130 GMT) on Tuesday and ended at 1000 local time (0430 GMT) on Wednesday.

Lakshmi's parents, poor labourers from the northern Indian state of Bihar, would be allowed to see their daughter this afternoon.

The child has been hailed by some in her village in Bihar as the reincarnation of the multi-limbed Hindu goddess of wealth, Lakshmi.

Dr Patil says he's optimistic about the child's survival

Conjoined twins are rare, occurring in about one in every 200,000 births.

They originate from a single fertilised egg, so they are always identical and of the same sex.

The overall survival rate of conjoined twins is somewhere between 5% and 25%.

Historical records over the past 500 years detail about 600 surviving sets of conjoined twins - more than 70% of which have been female twins.