DISSECTION OF THE DOG 105 



(ligamentum tarsi dorsale) joins the neck of the talus to the cuboid and 

 third metatarsal bones. A small anterior talo-calcanmn ligament (ligamentum 

 talo-calcaneum anterius) will be found in the depths of the groove between the 

 two bones with which it is associated. 



Dissection. — Remove the talus. This is rendered difficult from the presence 

 of a strong interosseous ligament. 



Ligamentum talo-calcaneum interosseum. — The talo-calcanean interosseous 

 ligament passes between the two bones, and is attached to the grooves between 

 their articular facets. 



Ligaments connected with the calcaneus. — Removal of the talus exposes both 

 surfaces of the strong plantar calcaneo-navicula,r ligament (ligamentum calcaneo- 

 naviculare plantare), which passes from the sustentaculum tali to the navicular 

 bone. Part of the cavity in which the head of the talus rests is formed by this 

 ligament. The long plantar ligament (ligamentum plantare longum) is powerful 

 and runs from the plantar surface of the calcaneus to the tubercle on the cuboid 

 and on to the tubercle at the proximal end of the fifth metatarsal bone. Partly 

 under cover of, and much shorter than, the preceding is the plantar calcaneo- 

 cuboid ligament (ligamentum calcaneo-cuboideum plantare), which joins the 

 calcaneus to the cuboid only. On the dorsal and lateral part of the joint 

 between the calcaneus and cuboid is a short dorsal calcaneo- cuboid ligament 

 (ligamentum calcaneo-cuboideum dorsale), which may be regarded as a 

 thickening of the capsule of the joint. 



Ligaments connected with the navicular. — A short dorsal cuboideo-navicular 

 ligament (ligamentum cuboideo-naviculare dorsale) joins the cuboid and 

 navicular on the dorsal aspect of the joint between the two bones. The 

 navicular and lateral cuneiform bones are united by a small dorsal navicular- 

 cuneiform ligament (ligamentum naviculari-cuneiforme dorsale), and a much 

 stronger plantar ligament (ligamentum naviculari-cuneiforme plantare) joins the 

 navicular and the medial cuneiform bones. The latter is continued to the first 

 and second metatarsal bones. 



Dissection. — Remove the calcaneus and the plantar calcaneo-navicular and 

 plantar navicular-cuneiform ligaments. 



The dissection exposes a short plantar cuboideo-navicular ligament 

 (hgamentum cuboideo-naviculare plantare) uniting the plantar aspects of 

 the navicular and cuboid bones. 



Articulationes tarso-metatarsece. — The metatarsal bones articulate with the 

 cuboid and the three cuneiform bones, with which they are connected by dorsal, 

 plantar, and interosseous ligaments. The dorsal ligaments are flattened bands 

 of no great strength. The interosseous Hgaments should be examined along 

 with the interosseous tarsal ligaments. 



