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  • Title: [Diagnostic validity of thermography of lameness in horses].
    Author: Weil M, Litzke LF, Fritsch R.
    Journal: Tierarztl Prax Ausg G Grosstiere Nutztiere; 1998 Nov; 26(6):346-54. PubMed ID: 9857414.
    Abstract:
    Thirty-six lameness free horses and 119 horses with lameness of the distal forelimb including the carpus were evaluated through thermography. Examination was done with an infrared thermography camera "Thermovision 470" and a specially developed analyzing software program. Temperature differences between corresponding regions of the left and right forelimb were determined and scrutinized statistically between various lameness groups. By creating temperature differences between both limbs a parameter for skin temperature was found which is independent of surrounding temperature. In lameness free horses skin temperature was contralaterally symmetric and there was no significant temperature difference between left and right limb. A significant (p < 0.01) temperature difference of all regions in comparison to lameness free horses was demonstrated in diseases like navicular disease, pododermatitis and tendopathia. Horses with a diagnosis of coffin bone fracture and arthropathia showed a significant (p < 0.05) temperature difference in almost all regions compared to controls, whereas horses with laminitis and periostitis did not show a significant difference. Loss of symmetric distribution of skin temperature could be demonstrated between affected and non-affected regions. Thermography can show and quantitatively prove very well changes in skin temperature in forelimb lameness. It must be emphasized that thermography in lameness diagnosis of horses is only useful in combination with a thorough clinical examination including additional examination procedures.
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