I was awake through the surgery on my broken elbow. At one point the surgeon told me that things had fit together really well. Sort of kidding, I said, "So I'll play the violing again?" I did play violin in my teens, but hadn't played much for years prior to the broken elbow. Still, the surgeon couldn't know how much I played. He didn't answer the question. In fact, the whole team went silent. As it turned out, I can play but the twist on the left arm is a bit harder to get right and my left arm doesn't stretch out quite straigt. I gather from conversations with surgeons, both about the arm and a later broken ankle, that some scarring is inevitable when a broken bone heals. After all, the regrowth that heals the bone is ... scar tissue. So I gather what they're telling you is that they can limit, or reduce, the distortion caused by scarring.

Some good questions then are: How precise can they get this? What are the chances of infection etc. from the surgery (there is always some chance of surgery going wrong, even though that chance is nowadays quite small in most surgeries)? Can you talk to someone who's had similar surgery by the same surgeon? What would the post-surgery PT process be, and why would that work better than what you had after the first round? Judging by your posts on this, you're very intelligent and have a good sound dose of skepticism. Given that, I think the way to a decision is to ask the hard questions and see if the surgeon can convince you. I also think your strategy of trying some further PT first is a good one. See what you can achieve with the healed bone as it is, and if that's causing you pain, physically or emotionally such as through loss of activities, then go back and ask how far further surgery could help and at what risks. Medicine these days can perform minor miracles, but it's not perfect. There are always risks and the miracle results can be successfull and yet fall short of our greatest hopes.