Page 271 - Adams and Stashak's Lameness in Horses, 7th Edition

VetBooks.ir

1
7
2
3

4

a

6

5

Figure 3.54. Lateromedial (LM) projection of the metacarpus. 3. Palmar surface of the second metacarpal bone.
(a) Third metacarpal bone. 4. Palmar aspect of the fourth metacarpal bone. The superimposition
1. Articulation between the second carpal and the second of the cortices on the metacarpal bones produces longitudinal
metacarpal bone. lucent lines that may be mistaken for longitudinal fractures.
2. Proximal palmar surface of the third metacarpal bone, where the 5. Medullary cavity of the third metacarpal bone.
suspensory ligament (interosseous muscle) attaches. The 6. Dorsal cortex of the third metacarpal bone, which is fusiform in
nutrient foramen is frequently present on the palmar surface of shape, i.e. thick in the center and thin toward both extremities.
the third metacarpal bone at approximately the junction of the 7. Metacarpal tuberosity.
proximal and middle thirds; it may be mistaken for a nondis­
placed cortical fracture.
237