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Argentina international Martinez's condition will be reassessed in the coming days, but Italian media suggested the 28-year-old is expected to be sidelined for around two weeks and is set to miss Inter's matches at Como onMonday (AEST) and home to Cagliari next weekend.

The injury is a blow for the Inter captain, who only returned from a similar problem last week after a six-week lay-off.

He scored twice in Inter's 5-2 home victory over Roma, taking his season's tally to 16 league goals, extending his lead at the top of the Serie A scoring charts.

The injury is also a worry for Argentina as it prepares for its FIFA World Cup defence, with Martinez being a key part of the team that qualified for this year's tournament in North America.

Inter has a seven-point advantage over Napoli in Serie A with seven rounds of the season remaining.