I would like the opinion of other healthcare workers. This guys gait seems impaired. Initially, when I saw the video, I thought this guy was a R BKA (below the knee amputee) . He purposely has to pick up his right leg and set it down. His left leg seems to rise and fall correctly.
His foot swings outward a little. The persistent crease at his R knee is where the top of the prosthesis would sit. The crease stays there when he is walking. I don't know. It is such a short video, sadly. I have replayed it and replayed. His gait is not of someone young.
If it is not a R BKA , then he has an injury. He walks like someone with an unstable core due to back or hip problems. I find it hard to believe he is young. But I read the new sketch is from an eyewitness.
I don't know. Any healthcare workers out there have an opinon.