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View Full Version : Long frogs and breakover - Thank you Patty!


jlthompson
11-23-2004, 01:09 PM
Just wanted to tell you all about what I found out after finally having hoof balance x-rays taken of my gelding. He is recovering from a torn navicular suspensory ligament - we are six months into rehab at this point.

Realizing his toes were too long, my farrier has been setting his shoes back for months (bar shoes - he used to be NBs), trying to encourage more balanced growth. We were doing this by "feel" because I had no x-rays to work from.

Then I read something that Patty Stiller wrote about some horses having abnormally long, skinny frogs, and that in these horses, using the standard NB mapping guidelines to find the proper breakover point based on the apex of frog might not apply. I realized too, that the "1/3 ahead of the frog and 2/3 behind" probably didn't apply either. I realized my gelding has the long frogs she was talking about, so I had my vet come and do x-rays with markers. (I'll attach a pic of his hoof that was taken six weeks ago - I posted it once before concerned about the red color in his white line).

Well, I just got the x-rays back, and on my horse, the distance between the apex of his frog and the tip of his coffin bone is only 1/2" !! That means that breakover should be only 3/4" ahead of the frog apex. We've been setting it almost an inch too far forward all this time, thinking we were making progress! What an eye opener!

So, as of last night, we took him out of the bar shoes, put him back into NBs with 1 degree wedge pads, and they are set waaay back, exactly where the x-rays dictate. He had almost 1" of toe hanging over, which we then rockered. After one front foot was done, the difference between the two was unbelievable. I can't believe we've been so far off all this time.

I thought for sure that my horse would walk funny, or even be sore after such a drastic change in shoeing, but nope, he TROTTED gleefully all the way back to his corral, sound as a bell.

What a learning experience. And I wouldn't have thought to x-ray him if I hadn't read Patty's post about how to find the proper breakover in horses with long frogs.

THANK YOU!

Jennifer

calshoer
11-23-2004, 10:46 PM
Thank you and glad that I could help. When I was first doing a lot of NB on subtly distorted feet like that I sometimes was way far off on some of them too. I learned about using the widest part of the foot as the reference more instead of the frog apex by being blessed to work with vets who would routinely take "after" x-rays of my work. (and then call me with a good friendly chewing out)
Now that you have found the true location of the tip of p3, if you keep the breakover back there relative to the bone every time , you should see a gradual change in the whole shape of the foot over the next two to three shoeings. There is usually less toe hanging over the shoe each time as the doeral wall changes shape, ,and the frog will get wider and eventually the stretched tip will shed off and the frog length will shorten. That is, as long as you also keep addresing the heel trim every time,moving it back near the sole plane and insure good frog support.
Glad he is doing well.
Patty