Lopez suffered the injury when he got tangled up with power forward Kevin Garnett on Saturday night in Phoenix.
In eight games, Lopez is averaging 20.5 points, 6.5 rebounds and 2.8 blocks.
The 25-year-old ranks fourth in the NBA in Player Efficiency Rating (27.77) and seventh in the league in field-goal percentage (57.4).
Reserve forward Andrei Kirilenko (back spasms) will miss his sixth straight game.
Kirilenko said Tuesday he thinks he’s maybe three to four days away from being cleared for full contract practice.
Reserve guard Jason Terry (bruised left knee) will play, according to Newsday.