LOS ANGELES

Big men. Big problems.

As if Game 7 wasn’t big enough, the Lakers and Celtics have some big injury issues for Thursday night, involving their respective centers.

The Celtics’ Kendrick Perkins went down to a sprained knee in the first quarter Tuesday night, while the Lakers’ Andrew Bynum had to leave the game with more trouble for the right knee that has been hampered throughout the Finals because of torn cartilage.

Perkins was the Celtics’ top rebounder before Game 6 and is their enforcer in the paint. When asked if he’ll have Perkins for Game 7, Doc Rivers said, “It’s doesn’t look great, but I don’t know.’’