I thought it was known that cartilage can regrow but it's just at such an incredibly slow pace due to lack of circulation that you can effectively say it doesn't grow?
Edit: after some googling I found this result
> age 15 or 16 would be about the average age for bones to stop growing, so from that point on, there is no collagen regeneration in the cartilage. Your body, on its own, cannot regenerate the cartilage it loses in its adult years.
Edit: after some googling I found this result
> age 15 or 16 would be about the average age for bones to stop growing, so from that point on, there is no collagen regeneration in the cartilage. Your body, on its own, cannot regenerate the cartilage it loses in its adult years.
https://regenexx.com/blog/does-cartilage-heal-on-its-own/