Mutai, who was 29 seconds behind Kebede, blamed hip and thigh problems for conceding the lead.

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For years it required a second operation, in which bone was harvested from the hip or thigh so that it could be used to paste two vertebrae together.

FORBES: Medicine's Two-Headed Watchdog

The opposing sides, of five players each, take turns serving the four kilogram rubber ball and thereafter trying to move the ball up the field, hitting it only with the hip or upper thigh, which are protected by special garments.

ECONOMIST: Sports anthropology

Wales international Ledley needs an operation - and potentially three months on the sidelines - to cure a hip problem while Championship top-scorer Peter Whittingham is carrying a thigh injury.

BBC: Cardiff City target Wigan midfielder Ben Watson

Spain's fragility is one you know well: the leg bone of an economy in a recession estimated to last two years is connected to the knee bone of undercapitalised banks is connected to the thigh bone of regions with debts they can't repay is connected to the hip bone of a government which cannot borrow at affordable rates.

BBC: Spain moves nearer to full-scale rescue