The purpose of the study is to document the prevalence of articular surface osteochondrosis
lesions in feral horses. Eighty yearling feral horses were used. Radiographic images
of the left stifle, both tarsocrural, metatarsophalangeal, metacarpophalangeal joints
were taken. Radiographs were examined for the presence of osteochondral fragmentation
and abnormal outline of subchondral bone suggestive of osteochondrosis. The prevalence
of each lesion was calculated for each joint as well as for overall prevalence within
the group, the latter being 6.25%. Typical osteochondrosis lesions were found within
the tarsocrural and metatarsophalangeal joints. Based on the difference in prevalence
of osteochondrosis between feral and certain domestic horses, management practices
and perhaps genetic base may have a greater influence on the development of the disease
in horses than trauma alone.
Keywords
Osteochondrosis - radiographic survey - feral horses