194 THE ARTICULATIONS OF THE LOWER LIMB. 



The inferior ligament consists of two distinct layers, of which one is superficial, 

 the other deep-seated. The superficial part, called the long plantar ligament 

 (fig. 220, 3), is the longest of the tarsal ligaments. Its fibres, attached behind to 

 the inferior surface of the calcaneum as far as the anterior tubercle, pass forwards, 

 and are attached in greater part to the ridge on the under surface of the cuboid 

 bone ; but some of them are continued onwards to the bases of the third, fourth 

 and fifth metatarsal bones, covering the tendon of the peroneus longus muscle. The 

 deep-seated part, or short plantar ligament (fig. 220, 3'), lies close to the bones, being 

 separated from the superficial part by some areolar tissue. Its breadth is consider- 

 able, its length scarcely an inch. One extremity is attached to the front of the ante- 



21 22 



Fig. 222. LIGAMENTS OP THE FOOT, FROM THE OUTER AND DORSAL ASPECT. (Allen Thomson.) A 



1, lower part of the interosseous membrane ; 2, anterior inferior tibio-peroneal ligament ; 3, 

 posterior inferior tibio-peroneal ligament ; 4, middle, 5, anterior, and 6, posterior parts of the external 

 lateral ligament of the ankle-joint ; 7, is placed above the interosseous astragalo-calcaneal ligament ; 8, 

 external calcaneo-navicular ; 9, dorsal calcaneo-cuboid ; 10, part of the long plantar or inferior calcaneo- 

 cuboid ; 11, astragalo-navicular ; 12 and 13, second and third naviculo-cuneiforin, and between them 

 one of the intercuneiform ligaments ; 14, superior naviculo-cuboid ; 15, placed on the external 

 cuneiform bone, points to the cuneo-metatarsal ligaments from that bone to the second, third, and fourth 

 metatarsal bones ; 16, cuneo-metatarsal ligament, from the first cuneiform to the second metatarsal 

 bone ; between 15 and 16, are seen the cuneo-metatarsal ligaments which converge from the three 

 cuneiform bones on the second metatarsal; 17, 18, cubo-metatarsal ligaments; 19 and x x. dorsal 

 intermetatarsal ligaments ; 20, lateral metatarso-phalangeal ; 21, 22, lateral interphalangeal. 



rior tubercle of the calcaneum, the other, somewhat expanded, to the depressed 

 surface of the cuboid bone behind the ridge. 



The dorsal or superior ligament is a flat band, connecting the upper surfaces of 

 the calcaneum and the cuboid bone. 



The internal or interosseous ligament is placed deeply in the hollow between the 

 astragalus and os calcis, and is closely connected with the external calcaneo- 

 navicular ligament. 



This joint has a separate synovial cavity. 



The name transverse tarsal articulation is given to the interrupted line of 

 articulation crossing the foot between the astragalus and os calcis behind, the 

 navicular and cuboid in front. 



ARTICULATIONS OF THE NAVICULAR, CUBOID, AND CUNEIFORM BONES, ONE 

 WITH ANOTHER. Naviculo-cuboid articulation. The navicular and cuboid 

 bones are connected by a dorsal ligament, composed of short fibres, extending 

 obliquely between the two bones; & plantar ligament, consisting of transverse fibres ; 



