Marquez was forced out of Mexico's 3-1 win over Ecuador on Saturday in Dallas.
A tempestuous affair also saw Segundo Castillo of Ecuador limp off after a heavy tackle with Luis Montes - the Mexico midfielder himself sustaining a broken leg, shattering his World Cup hopes.
Mexico will face Croatia and Cameroon in Group A as well as hosts Brazil, with Marquez's experience likely to be crucial if they are to progress.
And he provided a boost to Mexican fans after the game, revealing that initial tests showed he should be fine to make the trip, ahead of X-rays.
He posted on Instagram: "Fortunately I have no fracture, I just need to wait for X-rays, but it seems that it is only a hit!
"Thank you all for your messages!"
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