Waaaaaaaayyy back when I was 20 or 21 I was squatting, using shitty form I’m sure, and I nailed 385 for a single.
Well a little back story first:
At that time I was using an 8 day programming split with everything being hit twice in those 8 days, once heavy and once light.
The average lifting session lasted about 2 hours and I was taking in between 5,000 and 7,000 calories (I didn’t track macros). I was a pretty big guy but, not very strong. I weighed about 225 but my bench was only 285 or so, I only did rack pulls, not full deads the heaviest being 585, my military press was equal to my flat bench. I would do the dumbest shit, trying to be the strongest guy in the gym; 100 lb dumbell hammer curls, 700 lb calf raises, etc. I was always tweaking my back, injuring a joint and just training right through it like a dumbass.
Like I said, I squatted 385 for a single and wanted to go heavier. I didn’t have the safety bars in the squat rack because, like most dumbass gym bros, I didn’t go past parallel. Hell, I probably didn’t even get to parallel!
I peel off the 35’s and slide on another pair of 45’s, making sure to slam them together so everyone turned to notice me getting ready to squat 4 plates per side. I get under it, unrack it with the bar on my neck, take a couple wobbly steps back then squat down and get stuck. I can move up a couple of inches so I try bouncing out of the bottom a few times and something pops in my knee then it folds kind of sideways as I crumble under the weight. My knee is swolen for a week or so and I hobble around for quite a while.
That happened about 13 years ago.
I’ve never had it examined or repaired and it’s always been crackly. As I’ve aged it changed to a “pock”. My quads are not symmetrical.
Lately I’ve noticed it sounds sort of like crumbling paper if I lay on my back and bend it in the air.