Maicon is set to miss a number of key games for Inter Milan after suffering a thigh strain in Saturday's clash with Juventus.
The Brazilian right-back scored and completed the 90 minutes as Inter lost 2-1 at home, but he felt pain after the match and was subsequently sent for a scan.
Inter have now confirmed that he has suffered a second-degree thigh strain in his left leg.
There was no announcement about how long Maicon might be out for, but it is thought he may be sidelined for around four weeks.
Inter kick off a busy November with a home game against Lille in the UEFA Champions League on Wednesday.