Page 38 - A Practical Guide to Equine Radiography

FOOT 19
Lateromedial (LM) (Figs 4.2–4.8)
VetBooks.ir 1. Remove shoes unless hoof balance assess-
ment is required.
2. Remove dirt and any loose horn from the
sole.
3. Position both feet on flat blocks with each
foot at the medial edge of the block.
4. Stand the horse square with the cannon
bone vertical to the ground in each direc-
tion and ensure all limbs are equally
weight-bearing.
5. A marker on the dorsal hoof wall and just
in front of the tip of the frog can help in
the radiographic assessment of horses with
laminitis.
6. Place the plate resting on the ground in
landscape orientation on the medial side
of the foot, as close as possible to the limb,
and lower than the solar surface.
Figure 4.2 Positioning to obtain a LM view of the foot.
Equine Radiography.indb 19
7. Place a R/L marker on the dorsal side of the
8. Position the X-ray machine on the lateral
plate.
side of the foot.
9. Focus–film distance: 100 cm.
10. The X-ray beam is usually orientated hori-
zontally but depending on a horse’s foot
conformation, the X-ray beam may have to
be angled up or down.
11. Align the beam perpendicular to the limb,
parallel to the bulbs of the heel.
12. Centre the X-ray beam at the level of the
distal interphalangeal joint, approximately
1 cm below the coronary band, midway
between the dorsal hoof wall and the heel.
13. Collimate around the foot, including half
of the proximal phalanx.
14. Exposure guide: 65 kVp, 8 mAs.
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