From the Randall Adventure Training Youtube channel. I've never seen anything like this. It's a little complicated (at least at first viewing), but it's slick and seems like a reasonable way to manage a fracture femur in the field.
[video=youtube;v3EfVsnFhSc]https://www.youtube.com/watch?v=v3EfVsnFhSc[/video]
[video=youtube;v3EfVsnFhSc]https://www.youtube.com/watch?v=v3EfVsnFhSc[/video]