HOW TO TAKE AND INTERPRET RADIOGRAPHS OF THE YOUNG PERFORMANCE HORSE
Fig. 3. Carpal flexed lateral to medial projection. This image demonstrates a small osteochondroma on the caudal radius (white circle). This radiograph will be discussed by the panel as Case 3.
(1) Osteophytes on the proximal intermedi-
ate carpal bone (2) Osteophytes or remodeling on the distal intermediate carpal bone (3) Osteochondral fragments from the disto- central radius or proximal intermediate car- pal bone (4) Osteochondral fragments from the prox-
imal third carpal bone (5) Osteochondral fragments from the plamar as- pect of the radial carpal bone
Flexed Lateral to Medial Projection of the Carpus (Fig. 3).
The areas of greatest concern on this view are the proximal dorsal margin of the radial and inter- mediate carpal bones, the distal dorsal margin of the radial and intermediate carpal bones, the proximal dorsal margin of the third carpal bone, and the cau- dal aspect of the distal radius. Abnormalities best projected on the flexed lateral to medial projection of the carpus are listed be-
Fig. 4. Tarsal dorsomedial (65°) to plantarolateral oblique pro- jection. This image demonstrates a DIRT lesion composed of multiple fragments (white circle). This radiograph will be dis- cussed by the panel as Case 4.
low. If the RA is in bold type, it is the best projec- tion to detect that RA. (1) Osteochondral fragments or remodeling
of the distal radial carpal bone (2) Osteochondral fragments or remodeling
of the distal intermediate carpal bone (3) Osteochondral fragments or remodeling
of the proximal third carpal bone (4) Osteochondroma formation on the cau-
dal radius Carpal abnormalities that are believed to affect
later athletic performance are not common and are generally reported to have a 7% prevalence in sales yearlings (Table 1). Lucencies in the ulnar carpal bone are detected with greater frequency but are generally considered insignificant blemishes.
Case Prognosis Summary Case 3. Small Osteochondroma on the Caudal Distal Radius
Performance Goal
Racing
Western English
Surgery Yes/No/ Maybe
No
General purpose
performance No performance No No
Excellent Prognosis
Prognosis
owner/ buyer
owner/ buyer
owner/ buyer
owner/ buyer
Good
Guarded Prognosis
Prognosis Poor
Case Prognosis Summary Case 4. DIRT Lesion With Multiple Fragments
Performance Goal
Racing
Western English
Surgery Yes/No/ Maybe
Yes
performance Yes performance Yes
General purpose Maybe
Excellent Prognosis
owner/ buyer
owner/ buyer
owner/ buyer
owner/ buyer
AAEP PROCEEDINGS Vol. 59 2013 381 Prognosis Good
