Fig. 1

A dorsoventral view of two dogs with moderate (left) and severe (right) osteoarthritis. Images include the area from the last lumbar vertebra to the first coccygeal vertebra at a minimum, at a distance of 60 cm. Arrowhead indicates the direction of the dog’s head. Arrow indicates the anatomical location of the hip joint. Increased temperature areas are observed on the hip joint, but with surrounding lower temperatures on the patient with severe OA