Robinson, 22, had recently returned to the lineup after being sidelined with a fracture in his right hand. He's emerged as a strong rebounder and rim protector on New York's front line, averaging 8.5 points, 8.7 rebounds and 1.5 blocks this season while shooting 65.1% from the field.
His injury is a tough blow to a Knicks team seeking its first playoff berth since 2013 and a young player finding his role on an emerging team. The Knicks entered play on Saturday in fifth place in the Eastern Conference at 23-22.
Will Knicks add another center?
The Knicks reportedly bowed out of the market for Andre Drummond, who became a free agent when the Cleveland Cavaliers bought him out of his contract after Thursday's trade deadline. At the time of Robinson's injury, Drummond remained a free agent, though was reportedly close to reaching a deal with the Los Angeles Lakers.
Demarcus Cousins also remains a free agent after being waived by the Houston Rockets earlier this season.
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