Day three of the Ocala Florida Level One Applied Equine Podiatry course. Working with cadaver limbs teaching Spectrum of Usability. The S of U is used to evaluate the hoof for health and conformation. We first developed our S of U in 2002.
The spectrum was developed for use by the Institute of Applied Equine Podiatry for a study being conducted to compare health and confirmation of a hoof to the position of P3 (coffin bone) in relationship to the ground plane. 50 cadaver hooves were obtained from a local rendering plant. Six structures of the hoof were rated for health on a scale of 1 to 9 with 1 being very poor and 9 being very healthy. Six structures scored: Frog, Sole, Heel, Bars, Quarters, and Toe. We then averaged the scores together to get an average score for each hoof.
We then proceeded to remove the hoof capsule being careful not to damage the internal foot (Internal Arch Apparatus). The internal foot was then placed on a glass panel, with the tip of P3 and the most distal points of the sensitive frog making contact with the plane. Measurements were then taken at the widest part of P3. We measured the space presented between the glass plane and the dermis at this point, both medial and lateral averaging the measurements together.
We then compared these measurements to the S of U score for each given hoof. Our findings were that the hooves that presented height from the glass plane to the dermis scored higher on the S of U than those that presented little to no height (ground parallel) at this location. This pilot study provides evidence to support the belief that correct conformation of the Ungular Cartilages aid in positioning the distal border of P3 within the capsule. It is our belief that when the ungular cartilage conformation is correct the distal boarder of P3 is at a 5 degree inclination to the ground plane. It is our belief that those hooves with the lowest S of U scores present a caudally rotated P3.
We then proceeded to remove the hoof capsule being careful not to damage the internal foot (Internal Arch Apparatus). The internal foot was then placed on a glass panel, with the tip of P3 and the most distal points of the sensitive frog making contact with the plane. Measurements were then taken at the widest part of P3. We measured the space presented between the glass plane and the dermis at this point, both medial and lateral averaging the measurements together.
We then compared these measurements to the S of U score for each given hoof. Our findings were that the hooves that presented height from the glass plane to the dermis scored higher on the S of U than those that presented little to no height (ground parallel) at this location. This pilot study provides evidence to support the belief that correct conformation of the Ungular Cartilages aid in positioning the distal border of P3 within the capsule. It is our belief that when the ungular cartilage conformation is correct the distal boarder of P3 is at a 5 degree inclination to the ground plane. It is our belief that those hooves with the lowest S of U scores present a caudally rotated P3.
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