Yes, he was told the leg should heal. He was in surgery for 5 hours, and I was told they stopped counting breaks at 10. The guy is about 50, and had told me earlier that he had very little cartilage left in between discs in his spine. That makes me wonder if he might not have had osteopenia or osteoporosis.
Once we got him away from his horse's front feet (and the danger of having his head or chest rearranged) we did not move him. The main question I had was whether to apply traction to the leg or not. There was no external bleeding, and based on minimal swelling I was relatively confident there was very little internal bleeding. Pain and cramping in his injured thigh was not getting much worse, although it was considerable (tough guy). He maintained feeling and circulation in the foot (his boot was off). About the only materials I had for splints were branches and saddle pads. My biggest concern was that I might not be able to maintain constant traction until he got to an ER. So I left the leg alone.
Fortunately, there were people around when it happened, we were near a road, and also, even more fortunately, near a meadow for the LifeFlight chopper to land. It was actually far more likely to have happened while he was on his own in the timber, and we might still be looking for him.