Man Utd defender Martinez out for remainder of season
Martinez was carried off during United's 2-2 draw with Sevilla in the Europa League on Thursday after he fell to the ground clutching his right foot with no opponents nearby.
Fellow centre-back Raphael Varane, who was also injured and substituted at half-time during the quarter-final first leg at Old Trafford, is expected to be out for a few weeks.
United said Argentine World Cup winner Martinez would make a full recovery in time for the start of next season.
"Everyone at Manchester United sends Lisandro and Rapha our best wishes for a speedy recovery," the club said in a statement.
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