Do clean-type exercises hurt the knees?

[erik-the-red]

http://www.exrx.net/Lists/PowerExercises.html

I was taking a look at how some of the Olympic Style Weightlifts are performed, and I'm interested in learning how to do some of them.

But, after running a search using keywords clean knee and getting no results, I'd like to ask:

Do olympic-style clean exercises hurt the knees?

[rbar89]

I do power clean and i dont have any problems. It shouldnt do anything worse to your knees than squat or deadlift would. I recommend you do learn clean because it really is a fun lift to do once you learn it and probably my fav besides bench.

[biggimp]

with proper form, there is no lift that is bad for your knees.

[HeavyBomber]

Are you referring to the bounce at the bottom of an olympic clean? Yeah, I would say that sucks for the knees. I don't know any lifters that actually incorporate the full squat in their lifts though. I can't even do it.