Justin, where, may i ask, did you get that description/explanation of the shoes that Linda posted? Thanks ray
Talking to various farriers, wasn't Jim Keith involved in this shoe I'm pretty sure he was making them in steel?
A few years back TPFA held a Clinic with Jim Keith. He brought with him a lot of the "Bubble" plates for welding to shoes for Navicular issues. The horse presented was shod with them after some considerable effort. One needed a welder to cut and weld the plate to a fitted shoe...anyway they didn't help the horse at all so the Liesner Bros hammered out a pair of Tennesee Navicular shoes make out of square stock...the horse moved much better after fit with them.
Linda's picture #36 shows an alum shoe that looks a lot like the steel Tennessee Navi shoe they made..it is square stock thinned at the toe and nails punched forward of the widest part of the hoof...
As in horses ~~similarly~~~ Navicular in Humans: all humans have a navicular bone in their feet. It is located in the 6th bone up from the medial side up of our big toe and is the 7th bone from the 2nd toe next to the big toe and inside next to it ; some humans are born with an extra navicular bone ~~called the accessory navicular bone: Called os navicularum or os tibiale exterum is an extra bone or piece of cartilage located on the inter side of the foot just above the arch. it is incorporated within the posterior tibia tendon; which attaches in this area. Accessory Navicular Syndrome: is a painful condition in which the bone or posterior tibial tendon are aggravated. causes: *Trauma *Chronic irritation from shoes *Excessive activity or over use Accessory Navicular Syndrome usually are from fallen arches and having a flat foot put more strain on the posterior tibial tendon; which can produce inflammation or irritation of the accessory navicular. signs and symtoms: *A visible bony prominence on the midfoot *Redness and swelling of the bony prominence *Vague pain/throbbing, usually occurring during or after periods of activity Diagnosis: *X-rays Treatment *Immobilization --Ice-- medications of NSAIDS ---physical therapy---and **Orthotic devices -- fit the shoe to provide support for the arch in prevention In humans, the posterior tibial tendon runs along side the accessory navicular bone and connects to the navicular bone and the one underneath it. Similar to a horse; we have also can have navicular syndrome ~~ the treatment and causes are very similar between the two species.