Saturday, January 24, 2009

Heels- Where Are They?

Heels are a Hot Topic DuJour in the Horse World. Too high, too long, none there- you name it, heel health is one of the most often asked questions in our practice. If we had a dime for every time we heard, "My Horse Has No Heels", we'd be able to travel to each and every one of you out here, and do a mini-clinic.

In response to the Invite post, (which was GREAT! THANK YOU ALL!! Keep them coming!) we start the first in what will most likely become a series on hoof health and owner questions. Today, we are going to start with heels, and The Orientation Of Growth.

The hoof is constructed of finger-like tubules, that interlock through hair like growth not just from the hair line (coronary band) down, but through the entire length of the hoof. (In fact, Dr. Bowker proved that hoof does NOT just grow from the hair line down as we have all been taught for years, but thanks to these fine connections that grow laterally, the hoof wall has the ability to grow around as well.)

These tubules initiate growth from the hairline. If you look closely at the top of your horse's hoof, you will see for the first inch or so down from the hairline, the direction that hoof WANTS to grow in.

For today's topic, we are going to view and discuss how this growth can be affected by NOT trimming heel, thus making it APPEAR that there is "no heel".

I am going to start off by saying this:
It is a physiological impossibility for the hoof to NOT grow heel as it grows toe. Period. They ALL grow. It is what the hoof care provider DOES with that growth, that determines what they LOOK like.

The image below is my horse, Sonny Bunz. Look at the two arrows- and you will see the Orientation Of Growth is DIFFERENT in his feet. (This was taken in early fall.) The off side (or right) hoof tends to grow very forward. The near side (or left) tends to grow upright. We are not going into WHY this happens today- just the direction. Looking at his hooves on the ground however, it appears that he has decent heel HEIGHT. Which he does.


Now, looking at this image below, the blue arrow shows two things: one the orientation of growth, and the arrow point itself shows you exactly where that horse is STANDING on it's hoof. Sonny, above, stands with his feet underneath him, thus supporting his limbs and allowing for energy dissipation. The horse below must-- MUST -- stand "in front" of himself.
This image shows where the horse is standing. Those heels look to be about 2 1/2" long, and growing forward. The red arrow shows the weight bearing point. The blue arrow inside the circle shows what could potentially be a fairly painful condition for the horse, with the bars overgrowing onto the sole. On the right side of the hoof, the blue arrow there again shows where the horse is carrying the bulk of his weight, and the orange is merely showing less bar tissue than the other side.
This image below again shows long heels. Overall, the hoof would be easier to correct.
This image of a rear hoof again shows bar material that is leading to problems. Known as the "seat of the corn", it is one of the areas that we see abscesses develop. Also the heels are about 2 1/2" long, with very forward growth.
How would this be corrected?
Hoof care providers Have Got To Trim Heel. Period. The heels MUST be rasped level. Heels WILL grow. A lot. How would we correct the bar tissue? By trimming it to the level of the existing sole. Having bars folded over like that is quite painful and can trap material in there that will set up decay and abscessing.

By trimming heel, you bring the heel back up under the horse. Once you have a horse who has shot their heels (and consequently, the entire hoof capsule) forward, (underslung is also a common name for it, as is crushed heels,) you are probably looking at more frequent trims for that horse. Is this something the horse owner can do? Why not? If you have a competent hoof care provider, who can keep an eye on things, you are actually going to be making his or her life easier by touching up the heels.

Thus ends Part One of Heels, Where Are They? Look for Part Two to explain "heel purchase" (and no, I don't mean buying some 'ho shoes!)

13 comments:

Andrea said...

This is great!! I will have my hubby read this and see if we can get some things fixed. I really need to brush up on my hoof anatomy!! I know you did a post on that a while back.

manker said...

thanx as they say, no feet, no horse.. and well done... a picture's worth a thousand words

trot on friend
gp

Mikey said...

Picture 3 made my hand reach for my hoofknife, no lie.
Good post as always. Love what you say about all heels need to be leveled and at least rasped. Otherwise you see underrun heels, curving inward. We just did some babies that had a tendency to want to do that. Even though we took heel off when there wasn't much to take, by doing that and leveling them off, it made them grow out straighter and they grew out of it. If we hadn't done that, they would grow up with that problem.
Good stuff!

Callie said...

AH HA! Thank-you once again! Things are beginning to click even more for me now. Thank-you, thank-you!

Callie said...

Please keep 'em comin'!

Mrs Mom said...

Andrea- I'd be happy to put up hoof anatomy again. Might be even better now that I am sorting out this photo stuff! ;)

Manker- I LOVE that folks have sent in pictures. It is fantastic!

Mikey- me too. I wanted to head out to the truck and go to help. We do a LOT of work with our rasps, me more so than Dear Husband. Having good tools on hand helps, too! ;)

Callie- they're coming! I promise! ;)

ranchette said...

The direction of growth is interesting and not something I've spent time looking at previously. Thanks for the interesting post.

BrownEyed Cowgirls said...

Great explaination MM. Everyone should learn these basics even if they do not want to ever trim or shoe their own horses. It is the only way to recognize if your farrier is doing a good job or not.

Jackie said...

I sure hope this is a long series of posts ... I'm going to learn a lot! Ace had that issue with the bars overgrowing the soles when he went a little long between trims. I knew it wasn't good, I just didn't know what it was. Fortunately, my trimmer did and he took those right off. I love learning the vocabulary and the specifics of some of these things that you see on a hoof.

Laughing Orca Ranch said...

Excellent post, Ms. Mom. Thanks for explaining all this heel stuff and even including some pics. I'm a visual sort of gal. My mind locks up when someone tries to explain stuff through words alone. :P

~Lisa

ps: stupid question. Why do they call it 'the seat of corn'?? Oh...and why 'frog'? Were a couple of drunk horseshoers and farmers sitting around and just decided to go on a hoof naming spree?
lol!

Stephanie said...

Very Good!

I learned alot!

Can't wait for the next part.

Melanie said...

Hmmmm...very interesting Mrs. Mom!! I will be sure to show my sister, as she does some trimming on her pony's hooves ( don't worry...her farrier showed her how!!).

I may have to take some pics of Bo's hooves for ya too! If I ever get out there again....

Victoria Cummings said...

These Lessons of the Hoof are great! Please keep them coming - the photos are really helpful - thanks to everyone who has sent them in.