Picture of bloody leg impalement was taken by a trauma unit personnel. The guy was brought in after a nasty car crash that left this metal piece run through his thigh.
I don’t think the impalement split femur (thigh bone) as it’s a very thick and sturdy bone, but it definitely scratched it, leaving it damaged. Knee would have suffered the most severe damage. Even though the knee cap itself was not impaled, the metal piece clearly damaged the rear end of the joint. I wouldn’t be surprised if this person ended up having to get complete knee arthroplasty.