The family of toddler Chan Chu-sing, who lost his right hand in a meat mincer, will face huge medical bills for new artificial hands every year until he reaches 18. Specialist Pak Ka-yu of the Duchess of Kent Children's Hospital said youngsters needing artificial aids like a hand have to have new ones fitted every year as their bodies grow. 'We could keep the aid's components but the socket has to be re-sized every year until 18 or 19,' Mr Pak said. He said a mechanical hand cost about $5,000 but an electronic one ranged from $30,000 to $60,000. Chu-sing put his right hand into a mincer as his father served customers in his butcher's shop in Yuen Long's Tung Yik Market on Monday. Surgeons at Tuen Mun Hospital said the severed hand retrieved by firemen was so badly damaged it could not be reattached. But Mr Pak said as Chu-sing was only two years old, he could not be fitted with an artificial hand yet and he was too young to train in how to use one. 'He would probably be connected with a dummy one first as it takes time for him to get used to a hand not belonging to himself. An artificial one will be installed when he is five,' he said. Chu-sing's father, Chan Kam, 65, closed his store yesterday to stay with his son. A spokesman for the Social Welfare Department said a medical social worker at Tuen Mun Hospital would counsel the family. 'As for the fee for an artificial hand, we will monitor the family's financial conditions before deciding if to help,' the spokesman said.