You don't think that was more the ten week cycle with the lateral side outgrowing the medial and placing undue stress there as it tipped the foot inward? Sent from my SCH-L710 using Tapatalk 2
Based on multiple tests in the field, I think the theory of asymmetrical horn production is not supported by scientific evidence. You can test that hypothesis just like I and many others have tested it. Score a line around the top of the hoof at an equal distance from the hair line with the edge of a rasp just below the periople. Six weeks later that line is going to be the same distance from the coronary band all the way around the hoof or it is going to be lower on one side than the other due to asymmetrical horn production. Science changes its views based on observation. Dogma denies observation so that "belief" can be preserved.
you have real improvement in your work; and let you slide this time on no handmade shoe; but next time!! no it isn't Johns work; but not many are; including myself. but listen and learn; and try it again
I think your foot distortion (the flaring) is not so much of a balance issue as it is another issue. What is causing this?.... I believe that this...jam, bulge, high spot in the coronet band is what you see as uneven hoof growth. This side is "taller" than the other. I think this is your culprit. I also think this distortion is caused by this.... From the picture it looks like there is a "high spot" in the sole there. A "jam", "dam", what ever you want to call it, the sole is uneven. Compare the medial side to the lateral and you will see a subtle difference in the two. Though small, that can account for huge distortions in the hoof capsule over time. If you will notice the frog is starting to shift also. The pressure from this high spot in the sole is causing the tissues to move away from that spot, much like if you or I had a small stone in our shoe we would shift our weight to the other side of the foot. If you pare out the sole to where is is flush with the sulcus of the frog and is evenly contoured (like a bowl) out to the white line, no high or low places, I believe you would see the flare in this hoof disappear in just a couple of shoeing cycles. Once the sole is pared out with a nice even contour all the way around the sole with no high or low spots, I believe you could set the hoof down and wait for several minutes, pick the hoof up and find the spot to be high once again. The high spot being where the sole is relaxing and dropping down, the coronet band following suit as well. After a couple shoeing cycles the spot would no longer be high and the flare disappearing as well. For what it's worth that's my two cents...
I agree with David on right size, radius and symmetry. I marked the foot as I see it., which was a little difficult due to unclean areas. Perhaps other thoughs will be offered.
This horse of Kim's problems are not in the capsule. As farriers all we can do is rub a bit of hoof off where there is pull and wing a bit of steel out where it needs cover. Any one want to guess what shape the hoof capsule on this horse will be when limb has straightened and horse has grown up?
Is the "theory of asymmetrical wear" supported by scientific evidence, Tom? Would you line be the same distance from the ground on a lame or crooked legged horse? Me thinks not. Dogma can be a double edged sword. Regards
Yes. Haven't you ever had a shoe wear more on one side than the other? Ever had a heel print deeper on one side of the shoe than the other? Ever change your trimming and shoeing as a result of such observations or do you just keep doing the same thing? The line is supposed to represent A/P leverage in relation to the A/P base of support. Methinks you're looking at it from the M/L perspective which is not relevant to the diagram. OTOH, have you performed the aforementioned experiment? - re; scoring a line around the top of the hoof wall and monitoring the growth.
In this case, we have to be talking about asymmetrical wear on the front of shoe, which is caused by the horses conformation and way of going. The wear can cause uneven pressure on the wall, if left long enough, causing a distortion Having said that, the wear is probably an aid to the horses joints, so I would probably adjust my shoe based on how the shoe was worn. I think I probably would shoe the horse the same way Kim did. Simple and straight forward maybe exclusive of the compensation for the interfering suggested by Mr. Perry. Don't know whether or not I would do that, not having seen the horse. He's probably right. I've been wrong before, and will be again, but I don't see much terribly wrong with that job. I would have liked to have seen a new shoe, but we know the reason for the reset. I'm not sure what Tom is talking about on his picture . I think he is suggesting shorter toe, which I can't disagree with. Tom? Regards
I'm talking about one branch of the shoe wearing significantly more than the other and/or more wear on one branch of the foot surface of the shoe in the heel area. Some years ago Gene Ovnicek told me that front shoe wear angle at the toe generally occurs on a line perpendicular to the axis of the break of the carpus. Not being one to take anything said by another farrier at face value (especially buying it from Gene ) I started making my own observations over time and keeping track. In general my observations on toe wear angle concur with Gene's - which is a rare thing indeed because I have many observations that are much different than what is contained in Gene's literature.
Interesting that you bring this up Tom. I have been pondering this very thing quite a bit over the last few weeks. I took those photos I posted here and made a blog about it. The physiological mechanism that causes the wall to migrate distally (or pulls P3 up...however you want to look at it) is a complete mystery. According to Pollitt's work, it happens at the interface of the PEL/SEL...how it happens is unknown. My question, just like yours...does it occur preferentially around the capsule...if so, it requires a change in the mitotic rate at the coronary, otherwise the integrity of the hoof wall varies around the capsule. Anyway, here is the link: http://www.georgiafarrier.com/Scrug...s/2012/12/22_The_mystery_of_growth_rings.html Additionally, if any of you are on Facebook, find me and there is a bit more discussion about it on my wall, where I posted this link. Would like to know what you and anyone else thinks about it. Hopefully, it will add to the discussion here. Thanks!
Well I would certainly not trim any more toe from that foot than Kim did. But I would like to see our Kim show as much bravery in trimming the heels as she has with the toe. To reiterate, I would do something . . . like this
Do the horn cells on one side compress to a higher density at the microscopic level like the wood cells in trees? Same number of cells packed into a smaller space? A tree that leans to one side will have closer spaced growth rings on one side and wider spaced on the other. But the number of rings is the same all the way around the tree - better "figure" on the compressed side. And yes I am going out on a limb with my analogy. At what point do the horn cells become weight bearing? Some anatomists assert that the coronary band itself is partially weight bearing.
It depends on the cell and its interaction with surrounding tissue. It is more than possible that cell producion can be increased or decreased relative to other factors, as well as there individual make up.It is an interesting topic. in a cross section of horn at the mid centre line the tubule distribution follows an interesting patern and not one you would expect.
What's the point of trimming more heel? If the integrity of the heel is ok, lowering the angle of p3 and attempting to get the angle back by pushing the frog up into the foot doesn't make much sense. If the breakover is moved back (as in the diagram) then you should be able to extend the heels out the back also without changing the trim.
IME, p3 will try to find balance regardless of what we do (m/l). If you're having excessive growth laterally then the foot would probably like to be trimmed lower on the inside. You need to find a common ground of how much you trim medially, how much shoe you stick out medially, how tight you fit it laterally....
