From the official Chiefs site:
Chiefs President Carl Peterson on QB Trent Green's condition following Sunday's game: "Obviously a pretty severe head trauma, but he had all his senses and feeling in his arms and legs. Actually, when he did wake up he remembered every play except the one that knocked him out. He's in the hospital right now, but the preliminary X-rays - and they did them of the neck and head - are all negative. So, we're being very optimistic and hopeful.
"His family, including his wife Julie, is with him and we're going to be cautiously optimistic that he's going to be back, but he's certainly got a headache right now."