Re: Request for hoof evaluation for Cadet


Lavinia Fiscaletti
 
Edited

Hi Aunna,

I've added mark-ups to Cadet's album:

https://ecir.groups.io/g/CaseHistory/album?id=84102&p=Created,,,20,2,0,0

There are a number of good things already in place with the trim: very little flaring, nice beveling all around, frogs are being allowed to callous, no excessive wall length. However, all the toes are too long horizontally and the heels underrun. HPA on the fronts is good but the hinds are broken back, with ground parallel coffin bones. There is sinking, which is affecting the the sole depth somewhat. Side bone on all four, much more significant in the fronts than the hinds. There also appear to be some arthritic changes (ringbone) on the fronts. Frogs are somewhat narrowed and elongated. The goal is going to be to shorten the toes so as to get the breakover set where the bony column needs it to be and work to get the heels to relax back under the horse to provide more solid support.

LF lateral composite: On the radiograph, the pink line follows the bony column alignment, which is good. It extends down to where the sole depth should be. Because the angle of the view was from slightly below the foot instead of a true lateral, it's a bit difficult to judge the actual sole depth. You shouldn't be able to see the bottom of the foot in a lateral view. Green line follows the angle of the new growth coming in under the coronary band. It runs parallel to the pink line. This is a visual, NOT a trim line. Note that there is a slight amount of laminar wedge present as you get toward the bottom 1/3 of the dorsal wall. Blue line is where the toe needs to be brought back to, blue X is the excess toe length. You can see the marker where the tip of the frog is - the toe at ground level needs to be brought back to about 1/2 way between where it is now and where the tip of the frog is. Orange line shows where the heels should be located. It also runs parallel to the pink line. Red line is where the bottom of the foot and sole depth should be, which is below where it currently ends. That means, NO trimming of the sole. Yellow line #1 runs thru the coronary band, yellow line #2 points to the extensor process. These two lines should overlap, or at least be very close together. The distance between them denotes the amount of sinking.
On the hoof photo, the green line corresponds to the green line on the rad. The blue area corresponds to the blue line and X on the rad = the excess toe length. Orange line is the same as on the rad = where the heels should be. The yellow lines follow some of the horn tubules from top to bottom: they should run parallel to the green and orange lines. Instead, they are much shallower, indicating how much the hoof capsule has run forward.

Here is more info on setting the breakover:

https://www.hoofrehab.com/Breakover.html

LF sole: Solid blue line indicates where the outer perimeter of the hoof capsule should meet the ground. Blue hashes indicate where the walls are beveled. In the toe, they correspond to the blue on the lateral views. Soles and frogs need to be left alone. Orange circles are where the heel buttresses need to be crept back to IF there is enough heel height to allow this. Be careful not to lose overall vertical heel height relative to the vertical height in the front half of the foot or the HPA will be negatively impacted. Adding a bevel to the backs of the heels may be all that can be done at this time. See here for more info:

https://www.hoofrehab.com/HeelHeight.html

This will help with determining sole depth:

https://www.hoofrehab.com/HorsesSole.html

RF lateral composite: Same discussion as for the LF. There does seem to be a bit more obvious dishing to this dorsal wall as you move from top to bottom - which is a red flag that the toe length is ahead of where it needs to be.

RF sole: Same as the LF.

LH lateral composite: On the rad, the pink line shows how the bony column should line up. The purple line follows the actual alignment. Note how the purple line dips down and away from the pink line.That's a broken back HPA. This narrows the joint space at the front of the foot and can result in the dorsal edges of P1 and P2 starting to rub when the foot moves. It also keeps the tendons and ligaments in the back of the foot in a constant state of extension, which can result in damage to them over time. Because the coffin bone is already sitting ground parallel, there is definitely NO heel height available to work with to move the heels back further. Any attempt to move them back right now will result in losing critical vertical height as an unwanted consequence. Notice how the coronary band slopes more steeply down toward the heels and how shallow the heel angle is. For now, just ramping the very backs of the heels in their current location, then beveling the outer wall so that the bar-wall junction carries the load, will be necessary to help get the heels to start standing more upright without losing overall vertical height.

LH sole: Same general discussion as the fronts. Note that the lateral wall does have some flare, which can be corrected.

RH lateral composite: Same discussion as the LH but note that the HPA is broken back more, increasing the damaging forces applied.

RH sole: Follow the discussion for the LH.

It may be helpful to use boots behind, with a wedged pad temporarily while the heels are working their way back into a healthier position.

--
Lavinia, George Too, Calvin (PPID) and Dinky (PPID/IR)
Nappi, George and Dante Over the Bridge
Jan 05, RI
Moderator ECIR

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