What did your farrier say about it?

 

There was no crack when the farrier was here, it happened sometime after that.

 

This would warrant a text to my farrier, with a photo attached.

 

I would bet against that being from an abcess. Possibly undiagnosed white line disease that has been brewing for a while. I would follow @ClearDonkeys advice, text you farrier with pictures. After that I would head for some type of antibacterial soak like White Lightning

 

That looks bad, it's even starting to split down vertically. I would suspect whiteline disease.

 

Pieh Tool still shows as having Cleantrax on hand. I would order a couple bottles if this was my pony

 

Looks rasped. How long since the farrier? How long between visits, especially this most recent and the last?

An abscesscan cause a small crack horizontally. Maybe 2 inches, usually not even that. Flares that are significant, overgrown feet - that can put enough pressure to separate the white line from the lamina

and cause an issue all the way around thatcould develop into something like the above. Treat it with something like White Lightning or Cleantrax.

 

I understand your concern about your pony's hoof crack. It's good to hear that he's walking normally and doesn't seem to be in pain, but it's always best to address these issues promptly. Here are a few steps you can take to help treat and prevent further issues:

1. Clean the Hoof: Make sure the hoof is kept clean and dry. This can prevent any potential infections from developing in the crack.
2. Monitor for Infection: Keep an eye out for any signs of infection, such as swelling, heat, or discharge from the crack. If you notice any of these signs, it’s important to contact your vet immediately.
3. Hoof Conditioner: Applying a hoof conditioner can help keep the hoof hydrated and flexible, which might prevent the crack from worsening. There are several good products available that you can use regularly.
4. Hoof Boot: If the crack is significant and you're worried about dirt and debris getting into it, you might consider using a hoof boot. This can protect the hoof while it heals.
5. Consult Your Farrier: Even though the farrier recently trimmed his hooves, it’s a good idea to get their opinion on the crack. They might be able to provide additional support, such as a special shoe or filler to help stabilize the hoof.
6. Vet Visit: Since the crack is quite serious, it’s always best to consult with your veterinarian. They can provide a professional assessment and recommend any necessary treatments.

Remember, while minor cracks can sometimes be managed at home, significant cracks should always be evaluated by a professional to prevent them from becoming more serious. Your pony is lucky to have you looking out for him!
Let me know if you have any more questions or if there's anything else I can help with!

 

That needs resected out and rebuilt using acrylic. Otherwise its going to be near impossible to keep it clean

 

I have never seen anything like this (but I have less experience than others here). Vertical cracks, yes, but horizontal cracks that are this big and appear to be separating? I'd be very worried. Definitely reach out to your farrier or vet asap. I'd be concerned that the hoof capsule has been seriously compromised and would want to make sure there isn't further damage, but also want to get to the bottom of what caused this seemingly overnight.

Glad he's sound, but if you wait until he's showing lameness, serious reconstruction and a lengthy rehab might become necessary.