Can Pierce & his sprained MCL make it through the playoffs?

Former Celtics teammate and current 76er Tony Battie on Pierce:
I know he's hurt. but Paul's definitely not going to ever admit that to anyone. You can see it. His shot is a little flat. His knee is bothering him, and he's had some foot problems, and his lift isn't 100 percent. But he's still the heart and soul of that team.
Pierce is such a warrior he'll still have his moments, but when he sprained his MCL the Celtics rosy playoff future took a hit. If healthy, we were the team no one wanted to face. But right now three of our top 6 wouldn't be playing if this was the regular season. Avery Bradley has gone from NBA Player of the Month nominee in April to a role player so far in May. Obviously his shoulder that has been popping out on the regular is the main culprit. Ray Allen could be sidelined at anytime with his bone spurs. But the biggest injury is Pierce's. Let's hope someone can step up to help shoulder the load.
Jackie MacMullan interview on ESPN Boston Radio: Listen Here