Got sidelined at the Hayward dog park. Bob was getting ready to fling a ball, and an 80 lb golden lab slammed sideways into my knees. I fell forward. The right knee was hurt a bit, but the left one was really slammed. I laid there for 3 or 4minutes, then tried to get up. That was 4 hours ago, and I still can't put my weight on it. Nothing broken but badly bruised right below the kneecap.
My leg is finally getting so that I can figure out what is wrong. I think it hyperextended backwards at the knee, and pulled tendon or ligament in back of the knee. I can feel it with my fingers going from below the knee back up into the hamstring. I don't think, and certainly hope that it didn't snap off. Also glad it was the left leg, since I have about 12 hours of driving tomorrow.