Post a long run my knee started to burn around kilometre three

https://codyipjn299.image-perth.org/how-much-is-normal-toronto-physio-on-pain-and-swelling-in-the-first-weeks-post-knee-replacement

Post a long run my knee started to burn around kilometre three, I kept running and didn't take massage seriously until session three, when the tightness finally let go.