We hebben hier al veel geschreven over hoeven met samengeknepen hoge hielen, met dus ook bijna automatisch in de voet omhoog gedrukte steunsels en -zeg ik voor eigen rekening - de vroeg of laat, daardoor ontstane ellende van (klinische)
hoefkatrolontsteking.
Er zijn mensen de mening toegedaan dat je de steunsel best kunt laten groeien, of dat wanneer je er een stuk afgehaald hebt en hij er dan binnen een week weer zit "de voet dan aangeeft dat ie dit nodig heeft"
Onzin natuurlijk, als je weet waar dat naar beneden gezakte stuk vandaan komt.... Alsof hoefwand (steunsel is net zo'n hoefwand als de rest ) op een bepaald plekje ineens harder zou gaan groeien dan de overige hoefwand.
Ik kwam vandaag een stuk tegen van Cheryl Edwards-Henderson (dezelfde als waar Harry het boek van aan het vertalen is) en ik denk dat het is zoals zij schrijft. Helaas nog in het Engels, maar ik neem aan dat dit ook wel in haar boek komt.
Het leek me van belang om het hier te plakken
One of the most damaging myths in hoof care was "the bar will find itself". Like the bar will find the location it wears and stays. And that the sole needs the excess bar to support the boney column or coffin bone.
The body is in a constant stage of replicating cells to replenish the old and lost cells. Thank goodness we continue to be renewed. An analogy with excess bar lets use our personal toe nail which is made up of tubules. When excess toe nail has grown and is rubbing the end of the inside of the boot toe and the nail has begun to turn and curl even tearing with discomfort. The papillae continues to grow the excess tubules does not send a message to the brain to stop production of say, tubule rows 215-310 stop replicating cells. These papillae don't tell the brain "just go into a holding pattern until further notified. The corium is not going to contemplate there is potential for the toe nail getting clipped and then telling the brain,
"so we'll get back with you to kick start the papilla tubule machine on again".
The excess human toe nail tubules at least are on the top of the toe not on the bottom as in the hoof. The excess toe nail horn up on the human toe having any excess will present varying degrees of pain within the toe and foot from excess pressure, crippling, infecting and gait changing. Ok enough analogy...smile
Remember that each sole, frog and bar tubule grows from its own individual papilla. The papilla is at the core of the tube creating an open space in the tubule while cells of keratin grow layers and layers of cells around the core tubule making it stronger and thicker also giving it individual coloring (slate black to light tan/blonde)
The colony of sole tubules come from the land of..Coffin Bone covering the base of this important bone. The life force of the sole tubules comes from a very special corium with micro- vessels of nerves veins and arteries that have tiny hair-like projections called papilla. A vein and artery go up into their individual projections also. These papillae thrive to see their work and effort prosper as they grow their own tubule from the life source they provide. Very honorable work. Daily the work goes on to develop cells for their tubule (think of cotton candy with the white paper tubule has threads of pink sugar wrapping around making a thicker tube. Every day that papilla is proud and feels accomplished to have good work results.
The tubules that are growing up and up as the new cells are created down below at the papilla/corium will begin to weaken from aging around 3 months from conception. When this happens those older cells will pack down right on top of their personal home place (their tubule). This is why on really nice callus sole you see pore-like holes. This look can only be created by the older tubule cells compressing and staying at that location.
When the sole callus is devoid of tiny pore-like look or tiny dots of dirt packed into the centers of the tubules can come from several reasons. These are a few of those reasons
1. Wet ground conditions have removed the callus and only the tubules tips are showing. That would look like tiny white tips inside the color of the sole and very smooth.
2. Toe-first landing stretches the front half of the sole and frog moving the callus forward off their tubule location and now onto one or several other sole tubules.
3. Bar smearing over the sole that comes from the bars zona alba so (pathologically damaged bar tubules) it isn’t obvious on the sole as the thicker
Bar wall would be this a solid rim edge out on the sole.
There are some more but you get the idea that the sole needs to have a clean and compressible surface to continually build more callus on the sole tubules. This makes those tubules sooooo proud (smile)
Now what happens when sole callus is torn off their tubules like a patch and shoved over to another location of the sole? The sole location that had been growing and feeling good about their health etc. are now sealed under the weight of pressed old callus that is preventing their ability to thrive. The weight crushing overhead is not stopping the cells below from developing (remember they don’t shut down the cell factory-ever) So the tubules are lengthening and bending into other tubules and feeling crushed, torn and weak unable to thrive and grow normally now.
Lets now imagine bar tubules that are to help create the fantastic shape to the back of the hoof with two wow factors. The internal arches act like a leaf-spring to yield to the descending pressure of weight coming through the heel region. The entire back of the hoof strength is aided by the form created by the bar wall.
The bar wall also has their own special corium/papilla that diligently work just as the sole papilla making good tubules to help provide the job that they are meant for. Shock absorption!
Confused at times because they often cause trouble in the neighborhoods they live by. Many times their excess growth isn't wearing off because of the type of tubule they are being both strong tubules or soft tubule they can grow unchecked. The bar tubules do not compress like the sole over their tubule They lengthen being pushed out further or broken and now packing down in between sole tubules. There are several damaging ways the excess bar horn can harm the sole and frog region.
The bar keratin is unique it will continue to lengthen if not trimmed or worn. When the foot fall is altered, sole is weak or diseased, capsule deformity create an environment for the bar tubules to grow over the sole, through the sole, down deep into the sole like a plug.
The sensitive sole is now being damaged or killed depending on the bars invasion. The tender papilla below are being crushed and torn vein and artery bleeding from surface damage leave their bruising of as a reminder of destruction.
Excess Bar has been the root cause of death and permanent lameness to many horses.
The soles worries are not just with bar tubules but also frog tubules. Frog tubules can do harm to the health and community of the sole region in ways unknown to many.
Frog tubules grow in long lengthy flexible tubules folding in perfect arrangement to protect the upper area of the younger frog tubules. These vital young frog tubules that are out of sight lay deep under the long lengths of older frog tubules. They only come to the surface for viewing in really wet winter months or when all the older frog tubules have been removed. These younger frog tubules have a herculean duty to support the entire digital cushion to prevent the heel from hyper-extending and damaging the tendons and ligaments.
Frog horn can stretched over the front area of the sole region at the center of the hoof and suffocate the developing sole tubules beneath. With the tensile strength of spider webbing the frog tubules can fold and be pushed deeper into the sole tubules and create a sewer trap for disease to further damage the budding and fledgling sole tubules.
Hoeven
