EVALUATION OF THE VARIABLY OSSIFIED COLLATERAL CARTILAGES OF THE DISTAL PHALANX AND ADJACENT ANATOMIC STRUCTURES IN THE FINNHORSE WITH COMPUTED-TOMOGRAPHY AND MAGNETIC-RESONANCE-IMAGING
M. Ruohoniemi et al., EVALUATION OF THE VARIABLY OSSIFIED COLLATERAL CARTILAGES OF THE DISTAL PHALANX AND ADJACENT ANATOMIC STRUCTURES IN THE FINNHORSE WITH COMPUTED-TOMOGRAPHY AND MAGNETIC-RESONANCE-IMAGING, Veterinary radiology & ultrasound, 38(5), 1997, pp. 344-351
Six Finnhorse cadaver forefeet were selected to represent radiographic
ally different types and grades of ossification of the collateral cart
ilages of the distal phalanx, These cartilages and adjacent tissues we
re evaluated with computed tomography (CT) and high field magnetic res
onance imaging (MRI), In CT the internal structure of the cartilages w
as consistent, but in MRI some differences were noted, The shape of th
e collateral cartilages and their ligamentous attachments varied, The
border between ossified and non-ossified cartilage appeared distinct,
with considerable variation in the extent of the ossified area in rega
rd to the cross-sectional area of the cartilage, Ossification originat
ing from the palmar processes and extending in the proximal/palmaropro
ximal direction, without separate centers of ossification, generally a
ppeared smooth and inactive, Palmar ossification followed the irregula
r shape of the cartilage, Separate centers of ossification had a medul
lary cavity or were sclerotic, Presence of a medullary cavity or scler
osis were also found at the base of the cartilages, The incomplete fus
ion lines between separate centres of ossification and the ossified ba
se of the cartilage varied from congruent and inactive to reactive wit
h marked sclerosis, flared margins and parachondral changes, Incomplet
e fusion may be clinically significant, Local conformational adaptatio
ns of the hoof were also documented,pith extensive ossification of the
collateral cartilage.