Ok but you can't prove Kane got injured because of uric acid.
No, but I can see that he has a history of joint injury, also that he was running in an unusual form just prior to two of his previous ankle injuries.
It's not that the injury is because of that directly, it hampers movement, slightly slows thinking/reaction time, then think if you get kicked whilst you have a sock full of glass shards vs getting kicked whilst you have a clean sock on, what hurts and injures more, generally speaking?
Once injured, if you are more acidic, your kidneys are already dealing with an acid burden (lactic, malic, ascorbic, B vits, etc etc etc many of the most vital healing processes are acids, but they need the minerals to allow balance), so in high intensity training + matches you will always be more prone to getting backed up, make no mistake your kidneys and body will let you know you are about to become ill (this is what crudely I could see in the team is certain periods of Poch's regime, such as after Burnley Feb 2019 when he broke them and we never looked fresh a single game after IMO).
This is why we had long periods of playing like turds first half, as it took a half time 'gee 'em up' team talk from Poch, to get their adrenaline going enough to overwrite the autonomic signals from their bodies to not go high intensity.
Think everybody could see it, we just mostly didn't want to understand it because we loved Poch (me included, I desperately wanted him to wake up to what was happening).