The Rockets confirmed on Tuesday that center Clint Capela has a small fracture in his left fibula and will be out several weeks.
General manager Daryl Morey said that Capela will be evaluated again in four weeks.
In the Rockets' 111-109 win over the Timberwolves on Saturday, Capela left the game early in the second half after banging knees with Karl-Anthony Towns.
After two years behind Dwight Howard, Capela has emerged as a critical rim protector and pick-and-roll option for James Harden. Capela ranks third in the NBA in field goal percentage (64 percent) and 10th in points per game off the pick-and-roll.