I posted earlier in the forums that I messed my S-I joint not listening to my body and going to failure too many times in the same week. I was introduced to this article:
I have to say I won't be doing conventional squats any time soon. I did the hack squat for the first time yesterday and felt no twinges or pain in my lower back even though I'm still not completely healed from my S-I joint injury
So I am enthralled about the hack squat right now, so much so I had to share !