Page 130 - Anatomy and Physiology of Farm Animals, 8th Edition

Joints / 115

although sometimes surgical transec- the tibiotarsal joint, is formed between
the distal end of the tibia and the talus.
VetBooks.ir tion of the medial patellar ligament is The other three horizontally oriented
required.
The tarsus (hock) joint, like the car-
joints within the hock (Fig. 6‐14) contrib-
pus, is a composite joint (Figs. 6‐14, 6‐15, ute little to no movement to the joint’s
and 6‐16). The ginglymus portion, called overall range of motion.

Dorsal Plantar

Tibiotarsal joint

T Cal
T
Cal
Figure 6-14. Porcine tarsus. With Proximal
three rows of tarsal bones, the tarsus intertarsal joint
features four horizontal joints, indi-
cated here by colored lines. Of these, 4 C Distal C 4
the joint between the distal end of intertarsal joint 1
the tibia and the talus bone contrib- 3 Tarsometatarsal S
utes the great majority of the range joint
of motion possessed by the tarsus. In
artiodactyls, there is a small amount
of movement also contributed by the
proximal intertarsal joint. C, central V IV III II II III IV V
tarsal; Cal, calcaneous; s, sesamoid
bone; T, talus.

(A) (B) (C)

Tibia Tibia Ca.

Tibia
Lat
mal Lat
Ca. mal
T T
C T

Central Central + 4 C 4
+ 4 2+3 3 MT IV
2+3
MT
MT III + IV MT III
III + IV

Figure 6-15. Hock. (A) Lateral view of left bovine tarsus. (B) Cranial view of left bovine tarsus.
(C) Cranial view of left equine tarsus. T, talus; Ca, calcaneus; lat mal, lateral malleolus (of fibula); C, central
tarsal; MT, metatarsal.