Both torn within 2 weeks of each other back in 2015. Use to run a lot and play highly competitive squash.l and football. No way was I letting anyone into my knees with a knife! Anyway resorted to cycling as every time I tried running I’d get swollen knees. Kept a good base fitness with TR and a couple of years ago after watching other half running for years eventually managed to learn to run again using Vibram fiver fingers. Taught me to use my feet as first suspension part, it takes all pressure/impact off knees and now happily trail running again, currently 52 years old and doing 60km a week running along with two threshold/SS TR sessions. I still have a abductor tear from footballing days, again now way I’m letting anyone mess in there with a knife, I handle that with given core exercises. Strong believer in strengthening areas (and losing weight) to help other areas, it’s served me well… One day I know I might require surgery for something but it will be a last last resort, they’ll have to wheel me in for that.