Again, It depends on where the fracture is and if it is displaced. I had one fracture the lateral side breaking front to rear. About 3/4 of the coffin bone was on one side of the fracture and about 1/4 was 'broken off'.
We used a bar shoe with side clips and a pad and he healed just fine. It took about 6 or 7 months but we did not put him back to work for about a year.
We put him in a pen with a load of sand for the first 6 months. X-rayed again an turned him out until the next year. We carefully changed his bar shoe every 6 weeks. We have a Horse Shoeing School near us and they did all of this for the price of a regular shoeing job. They drilled tiny pilot holes to keep from having to hit the nails very hard.
I have known others that never got 100% sound, but I do not think the owners went the extra mile to keep it stable.
One of the problems with a hind hoof is that the horses have a tendency to keep it flexed and barely step on the toe and never set it flat. If that is the case, they really need a toe extension to force the heel down so that the deep flexor tendon does not contract. I have seen several horses recover from a fracture or severe leg wound only to be permanently crippled from contracted tendons.