Aldridge missed the first seven games of the 2006–07 NBA season due to off-season shoulder surgery, but returned ahead of schedule due in part to an injury to fellow rookie teammate Brandon Roy. Aldridge made an immediate impact on offense, averaging 8.4 points on 54% shooting from the field through his first 14 games. After the loss of starting center Joel Przybilla, in February 2007 to season-ending knee surgery, Aldridge was awarded the starting center position and improved his scoring to 14.7 points with 8.0 rebounds per game in the month of March. This placed him second in the voting for the Western Conference Rookie of the Month to Roy. On March 31, 2007, in the first quarter against the Los Angeles Clippers, Aldridge was taken to Providence Hospital in Portland for shortness of breath and irregular heartbeat. He was diagnosed with Wolff–Parkinson–White syndrome on April 9 and missed the remaining eight games of the 2006–07 season. Aldridge started 22 games in his rookie season.