Garnett is considered doubtful for Wednesday's game against Detroit at the TD Garden. Also doubtful is Mickael Pietrus, who sat out half of Tuesday's practice to receive treatment on his knee.
Jermaine O'Neal, who missed Sunday's victory against the Chicago Bulls, said his shoulder is still sore but foresees being healthy enough to suit up against Detroit. Brandon Bass also missed Sunday's outing, but is not expected to return for another week or two.
With the Celtics front court so banged up, rookie JaJuan Johnson and veteran Chris Wilcox should see extended playing time for the second straight game. Both were pivotal in Boston's 95-91 conquest of the Bulls, displaying game-changing energy and athleticism.
Keyon Dooling returned Sunday after an extended injury absence, but suffered a setback at Tuesday's practice and his status for Wednesday's bout with Detroit is in doubt.