Raul Ibanez, Scott Eyre one other Phillies player will undergo surgery:

It turns out that Lidge was injured this year, but it’s not his knee. On Wednesday, Lidge will have surgery to repair loose bodies in his elbow. In addition, he will need to have his flexor/pronator tendon examined. If Lidge’s tendon is okay, then he should be ready to pitch when pitchers and catchers report to spring training. However, if his tendon needs to be repaired, then he is doubtful to be ready by the beginning of spring training.

That’s a much better explanation for his season than reverting to his Astros form of blowning saves.