Let's assume a few people were stranded in the wilderness and didn't have access to proper medical equipment. One suffers a simple, closed fracture of the tibia right between knee and foot joint due to a fall. One of the stranded people is a surgeon and he has to come up with a way of treating that fracture with very limited equipment and tools (basically nothing but a first-aid-kit and anything that's available in the wilderness). How would he approach that and how high would the wounded person's chances of healing without permanent damage be?
Edit: I'm asking this because I'm currently working on a fictional piece in which exactly this is featured. I already found out from a bit of googling that, in such a case, conservative, non-invasive therapy would be the only feasible approach. Would you do this with an improvised orthesis? Or could you fashion some kind of gypsum-based aid if you had access to that? And how would the reduction of the fracture work? Could you even do that without X-Ray or some other imaging technique? How did people fix broken legs before such things came along? I'd be very grateful for someone who could describe their personal approach at such a procedure in detail, as I'd like to stay as realistic as possible.