Micah Richards underwent surgery on his injured knee at a Manchester hospital on Monday afternoon.
The City defender saw a specialist at lunchtime who recommended immediate surgery to mend a torn knee cartilage.
Richards suffered the injury near the end of Saturday's narrow win over Swansea in the Barclays Premier League.
There were fears that the England international had damaged knee ligaments, something that could have ruled him out until the end of the season.
However, those fears were allayed on Monday morning and Richards is hopeful that his lay-off will be weeks rather than months.
Monday afternoon’s surgery is likely to have been a key-hole operation, a procedure that reduces the recovery time.
Richards and City manager Roberto Mancini will not receive the full prognosis until later on Monday.
Meanwhile, City winger David Silva is back in England after spending a week in Spain having physio on a hamstring injury.
The Spanish international hopes to be back in training with his City team-mates towards the end of the week but will not play against West Ham on Sunday.
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