Join Date: Nov 2008
Location: Lafayette, IN USA
I've never encountered the definition cited in the ezine links provided here. I am, however, familiar with two definitions for sheared heels:
1. A medial/lateral disparity in heel height. Also known as a jammed heel, the hoof capsule evidences with an obvious disparity in heel height. Most often, the medial (inside) heel is "pushed" up or "jammed," while the lateral (outside) is relaxed and low. The high side tends to be very upright, and the low side tends to flare. There's usually an accompanying failure of the bars.
2. Independent movement of the heels; a failure of the internal structures which normally bind the heels together. This breakdown allows the heels to flex apart more than normal, and can cause lameness. This condition is also generally accompanied by bacterial infection of the central sulcus of the frog.
I usually see the first described condition associated with conformational flaws, and it is often exacerbated by poor maintenance. It can be, but is not always accompanied by the second described condition.
Last edited by Danvers; 11-22-2008 at 05:32 AM.