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Trauma or tumour?


Osteosarcoma is the most common primary bone tumour of the appendicular skeleton in dogs, occurring most commonly in the metaphyseal region of long bones of large or giant breed dogs.


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In human medicine a disease is considered to be rare if its incidence is one per 2,000 individuals or less. The majority are genetic in origin and only 30% of the thousands that exist are studied. In animals this concept is not established but there are a number of pathologies that can be classified as rare because of their low incidence in daily clinical practice. We will refer only to bone diseases that pose a challenge for the clinician both when making a diagnosis using imaging techniques and/or biopsies, and when determining possible treatments. This paper will highlight multiple cartilaginous exostosis, epiphysiolysis of the calcaneus, femoral epiphysiolysis, Osgood-Schlatter syndrome, synovial osteochondromatosis, calcinosis circumscripta, low-grade osteosarcomas, secondary bone lesions to leishmaniasis and some pathologies related to growth and nutrition.

KEY WORDS: Bone, uncommon pathologies, dog

Femoral epiphysiolysis


In a retrospective review of 43 femoral fractures, three dogs had separation of the capital femoral epiphysis from metaphysis in the absence of trauma. This is a rare and under-diagnosed pathology, which has also been described in cats.


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by Josep Font Grau

Uncommon bone pathologies

Volume 26(1), Spring 2016

FECAVA Lecture*