FOX Sports' Jay Glazer first reported the tear.
Hicks was the Eagles' second-leading tackler after Week 9 and their biggest playmaker among inside linebackers. The rookie had compiled 50 tackles, one sack, three passes defensed, one forced fumble and two interceptions on the season. Watching Eagles film, Hicks was one of the few second-level defenders who made "wow" plays on a consistent basis each and every week.
Kiko Alonso returned from a knee injury Sunday, which should help mitigate some of the loss of the dynamic rookie. Hicks ranked eighth on Chris Wesseling's most recent Rookie of the Year watch.