Heel Erosion
click on images for detail

Description

This condition starts as a pitting of the horn of the heel. The small craters join together to form areas of black, rotten horn. Erosion of the heel horn continues until the stability of the foot is compromised and the heel becomes sore. (click image)

Sub-clinical laminitits may possibly be involved in one process of heel erosion. In some cross sections of the foot, hemorrhages occur in layers. This suggests that repeated insults cause episodes of sub-clinical laminitis. These layers of hemorrhage appear to end in grooves such as are present in the photograph to the left. These grooves become subject to bacterial erosion and turn black in color. (click image)

Cause

The cause of this condition is not known. It is most prevalent under wet, cold, filthy conditions. Therefore, the action of irritants in slurry is likely to be a predisposing cause. Numerous microorganisms are found in slurry but no particular agent has been incriminated. Some workers have stated they believe that the condition is more common in herds with sub-clinical laminitis.

Treatment

Careful removal of black necrotic horn and spraying with a bacteriostatic agent are probably useful. This service is usually part of a claw trimmer's routine service. If a case is regarded as being "serious," individual treatment can be offered. This can be as simple as applying blue stone crystals or a 50% mixture of anhydrous copper sulfate and sulfamezathine.

Control

Regular use of a foot bath during the winter months is an excellent method for keeping this condition under control. Copper sulfate 7% solution or formalin 5% solution can be used on a weekly basis. More frequent use may be needed if the condition becomes severe.