The England midfielder was substituted in the 71st minute of Wednesday's 1-1 draw with Genoa after scoring a first-half freekick to notch his second goal in as many games.
"He came off because of a muscle strain," coach Carlo Ancelotti was quoted as saying by Thursday's La Gazzetta dello Sport. "We'll assess (the situation) in the next few days, but it does not seem serious."
Ancelotti tried fielding Ronaldinho and Beckham together on the Englishman's league debut, a 2-2 draw at Roma, in a highly offensive lineup that also included Clarence Seedorf, Andrea Pirlo and fellow Brazilians Kaka and Alexandre Pato.
But the team was lopsided in attack and Ancelotti has sought to restore balance by bringing Massimo Ambrosini's steely presence into midfield and leaving out Ronaldinho, who is less inclined to chase back and did not look 100 percent fit against Roma.
Even when Ronaldinho was in good form in front of goal earlier this season, Kaka complained that he was having play deeper and tackle more to compensate for his compatriot's presence in the side.
Coach Jose Mourinho will be without suspended midfielder Sulley Muntari, who was sent off in Sicily, and Brazil forward Adriano, who will serve the second part of a three-match ban for throwing a punch in Sunday's 1-0 win over Sampdoria.
Juventus hope to have Alessandro Del Piero back for Saturday's home game against Cagliari after the captain missed Wednesday's 2-1 defeat at Udinese with a knee knock.
