With 5:30 remaining in the first quarter of Game 6 of the 2010 NBA Finals, Celtics center Kendrick Perkins landed awkwardly and appeared to injure his right knee while battling for a rebound with Lakers center Andrew Bynum. He was examined by head trainer Eddie Lacerte, along with team physician Brian McKeon, before he was helped off the floor to the locker room by Shelden Williams and Brian Scalabrine. The injury itself, along with the severity of it, is still unknown. 

According to the ABC telecast, Perkins is currently undergoing x-rays. 

Update: Kendrick Perkins will not return to game tonight for Celtics, league source says. Uncertain status for a Game 7. - Via Adrian Wojnarowski's Twitter

Update #2: Official from C's: Perkins sustained a right knee sprain and will not return to tonight's game. His condition will be re-evaluated 2morrow. - Chris Forsberg Twitter