Inter Milan have confirmed that Gary Medel underwent successful knee surgery in Barcelona on Thursday morning.
The Chilean injured his lateral meniscus during Derby della Madonnina with AC Milan last week and now looks set to be sidelined until early 2017.
"Gary Medel underwent successful arthroscopic surgery in Barcelona on Thursday," a statement from the Nerazzurri read.
"The lateral meniscectomy procedure was performed by Dr Ramon Cugat at the request of FC Internazionale. Club doctor Alessandro Corsini was in attendance during the operation."
The 29-year-old defensive midfielder joined Inter from Cardiff City in 2014 and has since made 94 appearances for the club, scoring nine goals.