Page 309 - Adams and Stashak's Lameness in Horses, 7th Edition

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Figure 3.75. (Continued) Dorsolateral to plantaromedial oblique 20. Interosseous space between the third and fourth metatarsal bone.
(D35L‐PlMO) projection of the tarsus. (a) Tibia, (b) calcaneus, 21. Lateral border of the third metatarsal bone dorsal to the fourth
(c) talus, (d) third metatarsus, (e) fourth metatarsal bone, and metatarsal bone.
(f) second metatarsal bone. 22. Articulation between the third and fourth metatarsal bone.
1. Articulation between the medial trochlear ridge of the talus and the 23. Articulation between the fourth tarsal and the third metatarsal
medial tibial cochlear groove in the tarsocrural (tibiotarsal) joint. bone.
2. Medial malleolus. 24. Articulation between the fourth tarsal and the fourth metatarsal
3. Articulation between the intermediate ridge of the tibial cochlea bone.
and the groove in the trochlea tali in the tarsocrural joint. 25. Plantarolateral and plantaromedial borders of the third tarsal bone.
4. Cranial aspect of the intermediate ridge on the tibial cochlea. 26. Vascular tarsal canal, which encloses the perforating tarsal
5. Caudal aspect of the intermediate ridge on the tibial cochlea. artery and vein and a deep perineal nerve branch. It may be
6. Medial trochlear ridge of the talus. more or less apparent on this projection, depending on the
7. Lateral trochlear ridge of the talus. projection angle.
8. Dorsomedial border of the sustentaculum tali. 27. Nonvascular area between the central and the third tarsal
9. Distomedial tuberosity of the talus for ligamentous attachment. bones. These nonarticular areas may simulate subchondral
10. Plantaromedial aspect of the talocalcaneocentral (proximal bone lysis and must be differentiated from erosion by their
intertarsal) joint. location.
11. Dorsomedial aspect of the talocalcaneocentral (proximal 28. Plantarolateral and dorsomedial borders of the fourth tarsal bone.
intertarsal) joint. 29. Plantarolateral and plantaromedial borders of the central tarsal
12. Dorsomedial aspect of the articulations between the central bone.
and third tarsal bone (centrodistal or distal intertarsal joint). 30. Articulation between the calcaneus and the fourth tarsal bone
13. Medial and lateral borders of the fused first and second tarsal (calcaneoquarteral or proximal intertarsal joint).
bones. 31. Borders of the sinus tarsi, which is a space between the
14. Prominent ridge for ligamentous attachment on the dorsomedial calcaneus and talus that appears as a more or less lucent region.
surface of the third tarsal bone. 32. Plantarolateral border of the sustentaculum tali.
15. Articulation between the fused first and second tarsal bones 33. Coracoid process of the calcaneus.
and the second metatarsal bone. 34. Articulation between the lateral trochlear ridge of the talus and
16. Dorsomedial aspect of the articulation between the metatarsal the lateral tibial cochlear groove in the tarsocrural joint
bone and the third metatarsal bone (tarsometatarsal joint). (tibiotarsal joint).
17. Dorsomedial border of the third metatarsal bone. 35. Cranial part of the lateral malleolus.
18. Dorsomedial border of the fourth metatarsal bone. 36. Caudal part of the lateral malleolus.
19. Plantarolateral border of the fourth metatarsal bone. 37. Calcaneal tuber.