Rams running back Todd Gurley has arthritis in his knee, Jeff Howe of The Athletic reports.
Gurley's left knee is the same one that underwent an ACL repair in 2014.
Speculation swirled around Gurley's health after the star running back was used sparingly by Los Angeles during the team's 2018 playoff run. Gurley missed the Rams' last two regular-season games but then returned for a solid performance in the divisional round game against Dallas, which was followed by two limited games in both the NFC Championship and Super Bowl LIII.
The 24-year-old was expected to be back in form on Super Bowl Sunday after a disappointing showing in his team's NFC championship overtime win but instead posted another underwhelming performance.