Virgil van Dijk has undergone successful surgery on the knee injury that could see him miss the remainder of the 2020-21 season.
Centre-back Van Dijk damaged ligaments in the early stages of the Merseyside derby on October 17 following a challenge from Everton goalkeeper Jordan Pickford.
The Netherlands international had a planned operation on Friday to repair the damage, Liverpool announced.
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“The Liverpool defender’s planned operation took place in London and was conducted successfully," a statement on Premier League champions’ website read.
"Van Dijk will now immediately focus on the beginning of his rehabilitation with the support of the Reds' medical department.