Volume 15: Issue 2 Shoeig for Rotatioal Deviatio of the Equie Limb by Michael J. Wildestei CJF, FWCF (Hos) Examiatio of a horse prelimiary to shoeig should be made while the aimal is at rest ad afterwards while i motio. The object of the examiatio is to gai accurate kowledge of the directio ad movemets of the limbs, of the form ad character of the feet ad hoofs, of the maer i which the foot reaches ad leaves the groud, of the form, legth, positio, ad wear of the shoe. (A. Lugwitz, 1884) A rotatioal deviatio is a twist i the limb. The twist ca be i a log boe or i a joit. A sigle limb ca have multiple deviatios of varied degree. Some deviatios are ormal ad may be breed specific. Draft horses ted to toe i (a axial rotatioal deviatio). Some deviatios are disciplie specific. Thoroughbreds as foals ted to toe out, a abaxial rotatioal deviatio. Some deviatios are cosidered withi ormal rages ad some are outside ormal rages. The acceptable rages are determied by the activity of the horse, weight of the horse, eviromet the horse is i ad the speed i which the horse travels. The 1. Cotiued o page 2 Figure 1. Schwyter, Swiss Farriers Maual, 1906. 1
The Natural Agle Cotiued from page 1 3. draft horse used i agriculture to pull a plow has to walk i a furrow, a depressio i the soil the same width as the plow. The breed of the horse is heavily muscled ad is base arrow. The toe i coformatio predisposes the horse to paddle, or wig out, which is acceptable as 2. the horse works at a walk. Figures 2 ad 3. Illustratios that show The coformatio allows Rotatio; The illustratios are by A. Lugwitz. the horse to walk the A textbook of Horseshoeig. arrow path, without steppig o the potatoes while cultivatig weeds. The thoroughbred may begi, toed out, yet as the aimal matures ad muscles up the limbs rotate towards the ceter. Dr. James Rooey poits out that some rotatio occurs i ormal limbs: "The amout of spi is oly about 7 to 8 degrees ad thus ot readily see except i high speed film or video. This small amout of spi, however, is very importat i the pathogeesis of arthritis of the fetlock joit ad fractures of metacarpal 3, metatarsal 3, or the 1st. phalax." As hoof care providers this iformatio is importat. We eed to choose the appropriate shoes ad make modificatios to accommodate the characteristics of every limb. Oe importat fact is that a horse with a rotatioal deviatio does ot break over at the ceter of the toe. So, determiig the poit of break over ad modifyig the shoe is importat to the well beig of the horse (Figure 4). Flexig the limb i the atural rage of motio so that the hoof is off the floor will defie break over (Figure 5). 4. 5. Evaluatio would iclude; 1) Watchig the horse walk away from you ad towards you. 2) Walkig aroud the horse to observe the limbs from may agles. 3) Liftig the limbs i the atural rage of motio. 4) Observig the coformatio. 5) Look at the wear o the hoof or the shoe that is o the horse (use a camera capable of slowig dow the motio of the limbs i movemet). We caot chage the coformatio of the mature horse, though we ca assist them i usig what they have. "The twistig movemet of ay hoof should, for physiological reasos, ot be hidered by Shoeig." (Lugwitz 1884) Cotiued o page 3 2
The Natural Agle Cotiued from page 2 deviatio may be breakig over o the outside to quarter ad the SX Roller would be a great choice as the half roud stock allows break over i all directios. 6. Observe the wear patters of the used shoe to evaluate break over ad build them ito the ew shoe (Figure 6). The old shoe is a road map givig directio to the ew shoe. Usig the Kerckhaert Classic Roller will save time ad eergy as the shoe has the modificatios ecessary to ease break over i all directios (Figure 7). 7. The horses that have rotatioal deviatios i the stifle ad the hock will rotate the hoof i the propulsio phase ad it is importat to allow this to happe. Usig the Kerckhaert Classic Roller hid o these horses will facilitate this atural movemet. Be coservative with tractio devices o horses with rotatioal deviatios. Be sure ad positio tractio devices so that break over is ot hidered. Be aware of the eviromet that the horse is expected to perform i. A jumpig horse performig i atural eviromet eeds tractio, o a sythetic eviromet the tractio is miimized. Defie the style of shoe by the severity of the rotatio ad the requiremets of the horse. The seasoal variatios i eviromet are aother factor to cosider. May shoes are desiged to ease break over i the toe though a horse with a severe rotatioal NEW LIBERTY DRIVING HAMMERS desiged by kerckhaert 6, 7 ad 8 oz. sizes well balaced weight forward desig 3 Deviatios from ormal coformatio are always a drawback to the performace of work. Whe strogly proouced, ad especially whe two or more defects occur i oe limb, they greatly predispose to strikig, cuttig ad to disease of joits ad of the hoof. No absolute rule ca of course be laid dow ad may deviatios occur, resultig partly from peculiarities i directio of idividual boes ad cosequet irregularities i movemet, from pace, that is, whether the horse walk or trot, from the way i which the aimals weight is distributed betwee his fore ad hid limbs, ad from the positio ad amout of the load which the horse draws or carries. (A.W. Dollar1887) For best results practice good fudametals of coformatio evaluatio, balaced trimmig ad itelliget choices regardig the shoe modificatios eeded. Small chages i the hoof care ca make a dramatic differece i the well beig of the horse ad the satisfactio of seeig the improvemet is what keeps us goig. Be safe. REFERENCES 1.A hadbook of Horseshoeig, 1887 A.W Dollar, M.R.C.V.S, Albert Wheatley, F.R.C.V.S 2.A textbook of Horseshoeig, A.Lugwitz, 1884 3.Equie Podiatry, Adrea Floyd, Richard Masma, Fuctioal Aatomy of the Foot, James Rooey. SAUNDERS, 2007
The Natural Agle TOOL CORNER Repairig a Damaged Forepuch A wood hadled forepuch maufactured by Bloom Forge was retured for ispectio recetly. We had Roy Bloom ispect the tool ad the do the repair that ca easily be doe i the field if you have the ecessary gridig equipmet. Roy s aalysis of the tool poited to the fact that there was o heat sigature ear the broke tip. This idicated the tool was used either i a cold piece or somethig with almost o heat. Forepuches are iteded for use i hot material. He cocluded that the fact there was o heat ad the type of break that occurred at the tip meat the tool was Damaged Wood Hadled likely drive ito the Forepuch. No heat material ad bottomed sigature at tip, E-head out o the avil, wedge split hadle. causig the break. The customer also apparetly did ot believe the rubber keeper was sufficiet to hold the tool o the hadle. Bloom uses the rubber keepers as he has foud that wedges will ted to come out as the hadle experieces the dryig that occurs whe workig i hot metal. It also has a certai amout of shock absorbig beefit. The customer had drive a large E-head ail i to act as a wedge ad as a result the hadle was split o both sides ad has to be replaced. The head of the tool was removed, the usig a 100 grit belt; he groud the tip back to flat. The he started gridig the sides to get the proper dimesios for a E-head ail. He recommeds ot usig gloves whe fixig tools so that you ca feel the heat as it builds whe gridig. If the tool begis Cotiued o page 5 4
The Natural Agle Cotiued from page 4 to get too hot to hold, it should be queched i water. If you ever grid to a poit that you get color i the tool you may cause irreparable damage to the metal. Take your time as you go through the process. If you kow the size E-head you are most likely to puch Groud back ad set to 1/2 HP Baldor from FPD with 2x36 for, the you ca match the work. Hadle still to be FootPro Attachmet arm (show with replaced. 36 grit belt) ad 10" Expader Wheel. dimesios to the ail head. A fial softeig of the corers of the tool will be the last step. Be sure you have checked the struck ed of the tool i case it eeds ay dressig as well. This tool was practically brad ew whe it was damaged so it did t require ay work other tha o the tip ed. We have posted a video of the repair o YouTube alog with umerous other shoeig ad tool related videos. Subscribe to the chael (www.youtube.com/farrierproducts) to get otice as other videos are posted. You ca also fid tool tips i the FPD Field Guide NEW Liberty 5 Slim XL 52.5mm Liberty 5 combo Slim 52.5mm
The Natural Agle THE NATURAL ANGLE is published to provide you with ew ad useful iformatio about the idustry. It is published through a cooperative effort of Vector ad Liberty Horseshoe Nails, Bloom Forge, FPD, Kerckhaert Shoes, Vettec, Bellota, Mercury ad your supplier. Articles i this publicatio are the property of The Natural Agle ad caot be reprited without express permissio. For iformatio cocerig reprits, please cotact Da Burke, FPD, P.O. Box 1328, Shelbyville, KY 40066 or Email: fpd@farrierproducts.com. If you have questios, commets or ideas cocerig the articles published i the Natural Agle, please cotact your distributor. We welcome your iput. The Natural Agle is desiged ad edited by Graphic Respose. 5