For the past few weeks I have been blogging about injury and how types of therapy can help healing and repair after injury. However, there are factors which can negatively affect healing too.
Position of the wound is important because healing depends on the blood supply to the area. Parts of the horse with lots of arteries and veins eg: the face, will heal more quickly. The lower leg has a much poorer blood supply and so healing is slower. In addition to this, if the wound is in an area of the horse which is moved often, healing will be slower. As with any other animals, horses will also lick or bite painful wounds which can again slow healing.
Granulation tissue is a normal part of the healing process. However, in the lower leg it can become a problem. In the normal healing process the surface of the wound will heal over at the same time as the deeper part of the wound is healing. Unfortunately, if this is slow (as in the lower leg), the wound will not heal over quickly enough to confine the granulation tissue. In this situation the granulation tissue can grow over the edge of the wound and form proud flesh. Epithelial cells will NOT grow over proud flesh but through and this is VERY SLOW. The granulation tissue will cause the epithelial cells at the edge of the wound to die so it is important to prevent proud flesh forming.
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Until next time!