Hi,
I have no experience with coffin bone injections, so I can't give any usefull feedback, other than re-inforce what Felda said, stay away from the steroids.
You definitely want to get rid of the inflammation - It's the cause of the Pedal Osteitis AND of the Navicular syndrome. But the veterinary recommendation is to use non-steroid anti-inflammatories, so keep that in mind.
Now, I would be carefull not to focus too much on fixing the symptoms and end up opening up a can of worms. Try to pinpoint the root cause...
QUOTE (Crazy trail adventurer @ Nov 7 2009, 02:41 AM)

He's used for pretty heavy duty trail riding.
This could very well explain the inflammation.
QUOTE (Crazy trail adventurer @ Nov 7 2009, 02:41 AM)

He's prone to laminitis and at one point, his feet started cracking so bad he couldn't hold shoes. We've had off and on lameness over the course of the past 4 years.
I'm with MissyClare, it would be helpfull to see pictures of the feet, details on the diet, etc. Otherwise everything below is just based on my assumptions that we aren't missing any important information.
I'm not saying that you're doing anything wrong at all - It can be that this worse simply can't handle the heavy work. In that case, like you said, you can just let him slow down.
But there may be other aggravating factors, like long toes, thin soles (carved by a farrier), or naturally thin soles that need boots, or something in the diet.
Many times people are doing things that have a detrimental effect on their horses and not even realize it, because it works with all their other horses.
QUOTE (Crazy trail adventurer @ Nov 7 2009, 02:41 AM)

Well, he came up lame again. So we did a whole series of ex-rays. The results: Pedal Osteitis, degeneration of the center of the Navicular bone and Navicular spurs in both front feet.
We've already put him into wedges with a set back shoe and a rolled toe. He's also padded with some cushion to help with the slightly dropped coffin bones. Our vet is suggesting Coffin bone injections to help with the Pedal Osteitis. His prognosis is guarded as there are so many different issues going on with the hoofs. Not to mention that as a result of this, his tendons have stiffened up and caused him to become over in the knee.
Here is what I would focus on:
1) Inflammation: From what you describe is most likely caused by the heavy work. The repeated concussion (bruising of the sole) causes the inflammation -> The chronic inflammation causes the Pedal Osteitis and navicular syndrome -> The N.S. causes toe first landing -> Toe first landing aggravates all the prior problems -> Vicious circle...
2) Laminitis: This most commonly is related to diet, and/or long toes, and/or toe first landing.
Again, if you feed him like an IR horse, then it's most likely a mechanical problem, caused either by his trim or just a reaction to the inflammation problem and the toe first landing.
QUOTE (Crazy trail adventurer @ Nov 7 2009, 02:41 AM)

I would also be very open to hearing any other suggestions. We really love this horse and want him to be comfortable. If he's a pasture pet, so be it, but we don't want him in pain. Nerving is not an option.
I would focus on reducing the inflamation. Use non-steroid anti-inflamatory and be very carefull with "therapeutic shoeing" because it may give temporary relief, but cause long term harm (see MissyClare's comment). In my opinion boots are the best option, until he's not sore anymore.
Make sure that he has a good trim - Remember that the root cause seems to be the repetitive brusing, so thining the sole in any fashion will only do more harm. And dont' allow long toes.
Keep in mind that you may have a great farrier, and he may do a great job on your other horses, but it may not be the best trim for this horse. (We would love to see pictures of his feet)
Don't work him once he's better - Give him time to recover and consider semi-retiring him, but certainly slow him down.
Well, I hope this helps.