Hello, Dave. I had acl and meniscus surgery in 2014. I was about 17. I started physical therapy THE DAY AFTER and he was BENDING MY KNEE! Oh, boy did that hurt! Anyways, I tore my acl and meniscus again in the same knee years ago. I would say at least 3-4 years ago it has been torn. I noticed it pops out and back in very, very easily and sometimes my knee locks or it just pops out and I have to pop it back into place. It doesn’t hurt anymore! It used to sting really bad. But I’m thinking if I just wear a nice knee brace, I can still go sky diving I’ll just inform the diver to give us a safe landing.