A Digital Osteochondroma as the Cause of Lameness in a Foal

A two-month-old foal was presented for evaluation of a grade III/V left forelimb lameness. The left front foot was found to be misshapen. Regional nerve blocks were used to isolate the lameness to the left front digit. Radiographs revealed an unusual exostosis on the palmar distal aspect of the middle phalanx. Due to a poor prognosis for a return to soundness with treatment, the owners elected to euthanatize the foal. Histopathology showed the exostosis to be a solitary osteochondroma originating from the middle phalanx.

Keywords

Bone - foal - lameness - osteochondroma - tumor

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