The Brazil international left-back is set to miss games against Athletic Bilbao and Roma and could also be unavailable for February's derby with Atletico Madrid
Real Madrid have confirmed that defender Marcelo has dislocated his shoulder.
The Brazilian left-back reportedly left the stadium with his shoulder in a sling following Madrid's 2-1 win at Granada on Sunday.
And the club have now revealed the extent of the injury, with a statement on Tuesday reading: "After tests carried out today on the player Marcelo at the Sanitas La Moraleja University Hospital, he has been diagnosed with an acromioclavicular shoulder joint dislocation.
"His recovery will continue to be assessed."
Madrid have not indicated how much game time Marcelo will miss but the 27-year-old looks certain to be out for at least the first leg of their Champions League last-16 tie against Roma as well as the derby against Atletico Madrid at the end of February.
The Brazil international has made 24 appearances for Madrid this season, scoring two goals.
- Goal