I experienced pain in my tibial tuberosity after a wreck. My dad and I were taking my weimaraner to the vet, and I was sitting in the back seat with the dog in my lap. I figured she formed a natural seatbelt, since she weighed nearly 100 pounds, so I did not bother to buckle the real one.
Well, someone pulled out directly in front of us on a highway with a speed limit of 65. My dad swerved and braked, but he could not avoid hitting the van. Everyone suffered some injuries (except the dog).
The dog had rolled off my lap onto the floor upon impact, and my knee had slammed into the back of the driver's seat. It would be awhile before I would walk normally again, and the hospital physician feared I had a tibial tuberosity avulsion fracture. However, I recovered much more quickly than they predicted.