Time is of the essence when operating on a torn Achilles tendon, Chen Xiangfeng reports.

Injured Chinese star hurdler Liu Xiang will undergo surgery in Britain on Thursday - two days after he crashed out of his 110m hurdles heat at the London Olympics and tore his Achilles tendon - although there had been some dispute about when he should undergo treatment.

Reports said Liu should have had the surgery on Wednesday in London because Achilles tendon injuries should be treated immediately. The reasons for the one-day postponement have not been made public.