Dab, do you do any stretching before squats? I've always found mixed advice on stretching before and not.
Like you, I had knee pain while squatting for the longest time. Do you keep a narrow stance or wide? I tended to use a wide stance, but changed it up about 3 months ago and the pain seemed to go away and I've finally broken through my plateau. I believe you said you had hurt your knee a while back though so we may not be in the same boat. and none of this has any medical backing at all just throwing it out there.
I jog 5-6 minutes on the treadmill which loosens up my joints. Vibrams are the only reason I can even jog. Makes the impact on the knee much, much less. I also bike to the gym, but now only about 1/2 the time because it's chilly out (3 miles). The running is mostly to get my knees ready to be a runner again. I used to love running. I haven't been able to run significantly for 3 years. I realize I'm kind of stressing them with warmup runs every day, 2 squat days out of 5 (1 of which is heavy deadlift day also), but I'm going super cautious on running now. After jogging I sit in an Asian squat for a bit while stretching ankles.
Then I do a few weightless squats to test my knee joints. Sometimes they just feel like they're going to collapse, like I don't have even a single muscle fiber holding em together. Sometimes it is really stiff inside, like it is inflamed and there's not enough room for the pieces to be moving around. From that I do 5 reps with the bar, 5 reps of 65, Asian squat stretches in-between. If I'm doing ok then, I'll either do another 65 or start the lift at 95. No more stretches from that point.
The heavier the weight, the more it helps my knees. But I can't go right into heavy weight. So if they're feeling alright, even with a little pain, I'm perfect because it improves with each set of more weight. If I can't get to that first 95lb set, I'm stuck. I used to stretch between every set, but it's been better after I stopped that.
The most obnoxious thing is if I don't do anything one day, like sitting at home watching movies and playing video games all Saturday or something, my knees are fucking RUINED for like 4 days. They just seize up like "oh he's not using us today? I guess we don't have to work ever again."
I swear to god this must be what it's like to have a really shitty girlfriend who is always demanding shit of you and then gets annoyed when you finally give in.
And I find no one can relate. Ligament injuries and meniscus tears have a much different recovery track. I'd fucking pay 10g to trade this for a ligament tear. I'd be better by now after all the work I put in. But I had a plica excision, which has happened like 10 times in the history of the world.