The injury happened before Bigfoot landed anything significant.
Bullshit. I'm watching it now. He threw the knee off the leg that he couldnt even walk on as Bigfoot went for the clinch against the cage. His adrenaline wouldnt have been flowing at the rate where he could throw a knee off a leg he cant even stand on 1:39 seconds into the fight. He was also using it to keep his base. Afterwards, Bigfoot landed some little nothing knees to Browne's, and went for the sweep takedown where Browne held the fence. He got out of the clinch and then it was noticed, and he couldnt even stand on it, so it pretty much happened in the clinch through Bigfoot's attacks.