Capello has spoken to Beckham and said "it looks like he is out of the World Cup."
The 34-year-old's career has also been called into question, but surgeon Sakari Orava is optimistic David Beckham will make a full recovery from an operation on his injured Achilles tendon.
Orava said: "Top athletes usually heal well but it's a few months until you are back at the same level as you were before.
"I don't think it is a big difference to be 25 or 35, it will be three, four, five months.
"Most of these patients come back at the same level, even in a top soccer player."