El Primero suffered a radial nerve injury while on his rest break after his first long format CCI ****, AKA Rolex.
We had him in the vet hospital as soon as he was discovered. He could not advance his RF. We tied a rope to the pastern to move it for him to get him into the hospital stall. A splint was built that extended from his elbow to the ground.
He was not tolerant of the splint and broke three in the first 24 hours. He was combative and difficult to help. He was on IV DMSO and I don’t remember what else.
Day 3 he began to founder on his LF although he was in blue boards and other means to help support that leg.
Day 4 he was in so much pain that we discussed the big E. That evening he laid down and stayed down for most of the next week or so. This saved his life. He did get up to poop and pee, but spent the majority of his time flat on his side.
DD did not visit him because he would stand up when he knew she was around. It nearly killed us to stay away, but we did for 2 weeks.
At 2 weeks we took him home. He could sort of support himself, but could not lock his knee or move his leg except to kind of throw it forward from his shoulder. He wasn’t able to walk with the leg, but he could hop and flop the leg.
The hospital tried electo stim, but he was very adament that there would be no electro stim of any type. He chased the vet, tech, and therapist from his stall with Kill in his mind.
We were fighting the LF the whole time and experimented with different means of supporting the coffin bone. We had to apply things to this foot while he was lying down as he could not support his weight otherwise.
At 1 month he could move the leg on his own, but the foot was not trustworthy to turn over at the right time and so movement was awkward. His knee would shake.
At about 60 days he was hand walking with a human ankle weight on the bad leg and blue board and Boa Boot on the bad foot. It was a catch 22 with the need to walk with weight and the need to be still for the foundered foot. We added weight to the leg at intervals. and reshod the LF often.
I suppose the fact that he was living in 2 inches of snow and walking in snow helped to keep the bad foot cold and maybe reduce the inflamation in the bad foot. I do not know.
I just know that my DH spent hours hand walking him with weight in the weak leg. They took long hikes through the neighboorhood. We all took turns with stretching the leg and treating the foundered foot.
Our farrier built a number of shoes for him hoping to find something that would be comfortable for him.
We did a ton of rads to track the coffin bone as it rotated and sunk… 
He left for FL on Dec 20 having not yet jumped a jump.
He lost about a third of his hoof capsule at Fork in the CIC*** and ended up in Sigafoos shoes for the remainder of the year. Thank you to Mary. 
He went to Rolex in May and finished xc within the time won the “Best conditioned horse award”.
We keep track of the LF and he just today had new rads of both fronts to see how things are going. It looks great, and so we are a go for 2010. The RF which had the radial nerve damage has not caused any trouble after that first year.
This horse does not owe us a thing and if he never jumps another jump it is OK.
Good Luck with your horse. I hope that you have as good of an outcome as we have had.
Talk about pressure…that was due to him getting kicked in turnout. The horse, not the lawyer.