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You could try to supplementing with collagen.
I have a fairly major knee issue which I am trying to live with. To keep it short my left knee which I had an acl reconstruction on back in 2004 has became loose since 2020 when I went for a run. For 3 years I had really bad pain, inflammation and laxity.
I started supplementing with collagen in Oct 2022, first I started with a small dose 3g... then eventually I bought powered and started taking 10g just before gym session.
It absolutely helped me. It brought the pain from a stinging 8 down to a 3-4. However I still had flare ups.
Since Christmas 2023 I have increased my dose from 10g to 20g (medical papers that have researched the optimal dose say 15g, but I take 20g as it's just easier to take 2 scoops) and I have noticed a big improvement.
Knee is much more tolerant and resilient. I still have laxity in the knee but that's why I am doing my Bulgarian Split Squats.
You could also try adding a turmeric supplement as well.
Also just to note you should try to keep your vitamin c up when you take collagen as the vitamin c helps the body use the collagen.
I take 500mg vitamin c tablet.
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As a side note, back in 2014 I was at my strongest. However I ended up dislocating my shoulder. For 7 years I had laxity and pain in my left shoulder. I was out of the gym for years etc... Over the years it got more stable but still remained sore. In 2021 I got back in the gym to try to rehab my knee.
However I couldn't press without pain. Anything over 60kg on the bench would hurt and shoulder presses where even worse.
As I mentioned above I started with the collagen to help my knee, but then I suddenly noticed a few months later that the pain in my shoulder had more or less gone which was a welcome surprise.
Just to follow on the back of this, I recently have been seeing a physio due to issues with my knee (mainly my patella tendon) and was told that using vitamin c and gelatin was better than using collagen supplements. He did link me to a study paper round this too.