Comparison of radiography, scintigraphy and ultrasonography in the diagnosis of a case of temporomandibular joint arthropathy in a horse

Diagnosis of temporomandibular joint disease in the horse presents a challe nge to the equine veterinarian. This Ease report illustrates a combined ima ging approach using radiography, scintigraphy and ultrasonography in a hors e with severe arthropathy of the left temporomandibular joint. Radiographs were inconclusive. Scintigraphy with Tc-99m methylenediphosphonate localise d, but failed to characterise the disease process; ultrasonography was the only imaging method which both localised and characterised the lesion. Ultr asonography proved to be a relatively cheap, technically easy to perform an d non-invasive method for the assessment of the disease.