Juventus go to Atlético Madrid in the last 16 of the Champions League on 20 February and Leonardo Bonucci may be a doubt for that first leg.
Leonardo Bonucci has suffered an ankle injury, Serie A champions Juventus have confirmed.
The defender started Sunday's 2-1 win at Lazio but had to be replaced before half time, having tried to play on after being hurt early in the game.
Bonucci may struggle to make Atleti Champions League tie
Juve announced in a medical update on Monday that Bonucci has sprained his right ankle and reports have claimed he could be out of action for as long as a month.
The Italy international may therefore be a doubt for the first leg of Juve's last-16 Champions League tie with Atlético Madrid on 20 February. The second leg will be held in Turin on 12 March.
Bonucci is one of Juve's key players, the 31-year-old starting 17 games in Serie A this term, with Massimiliano Allegri's men seeking to clinch an eighth consecutive title.
Juve 11 points clear at top of Serie A after Lazio win
Juve's win at Lazio, sealed by a late Cristiano Ronaldo penalty, saw them move 11 points clear of Napoli at the top of the table.