I've become involved in this story too because of a related story I'm doing on artificial surfaces for horse race tracks that might have prevented an injury like Barbaro's. Here's the information I got today from his doctor:

Hi Tom,

Dr. Richardson has responded to your questions as follows:

How many surgeries?

He had three "major" surgical procedures.

He was anesthetized nine times. The other six were for cast changes and some minor procedures.

Current state?

The original injury has healed. The fractures have healed and the joint fusions are solid. The healing is complete enough that he is wearing no additional support other than a corrective shoe. The shoe on his right hind foot is special because his leg is not completely straight.

So....the original injuries have healed.

The left hind foot (the one that had the hoof wall removed due to laminitis) has NOT completely healed. It is gradually healing but it is slow and there is no way to be certain that it will ever adequately heal. There is a long way to go for this foot.