176 AETICULATIOXS OF THE LOT^^ER LBIB. 



of the cavity just rnentioned, and lies deeply at the anterior part of the 

 fossa {sinus pedis), between the astragalus and os calcis. Its fibres, 

 very short, are directed from behind forwards between the contiguous 

 extremities of the bones. They are attached posteriorly to a ridge of the 

 OS calcis that separates the articular surfaces for the astragalus and os 

 cuboides, and anteriorly to the outer side of the scaphoid bone. 



Thetalo-scaphoidor astragalc-scaphoid ligament, a membranous 

 ])and of fibres situated on the dorsum of the foot, extends obliquely 

 forwards from the anterior extremity of the astragalus to the superior 

 surface of the scaphoid bone, and completes the capsule of the calcaneo- 

 talo-scaphoid joint, formed in the rest of its extent by the plantar and 

 external calcaneo-scaphoid ligaments. 



Two synovial membranes line the articulations of the calcaneum 

 and scaphoid with the astragalus, one belonging to the calcaneo-talar 

 joint, and another to the calcaneo-talo-scaphoid articulation. 



Calcaneo-Cuboid Articulation. — The calcaneum is united to the 

 cuboid bone by a synovial joint and ligaments. 



The inferior ligament consists of two distinct fasciculi of fibres, of 

 which one is superficial, the other deep-seated. The superficial parts 

 called the long plantar ligament, is the longest of the tarsal liga- 

 ments. Its fibres, attached behind to the inferior surface of the calca- 

 neum as far as the anterior tubercle, pass forwards, and are attached in 

 greater part to the tul)erosity on the under surface of the cuboid bone ; 

 some of them are continued onwards, and terminate at the bases of the 



Fi-. 158. 



Fig. 158. — Ligaments of the Foot, from the inner side. (A. T.) ^ 

 1, internal lateral liganjent of the ankle ; x , in front of the sustentaculum tali, show- 

 ing part of the internal lateral ligament descending upon it ; 2, posterior talo-calcaneal 

 ligament ; -3j posterior- ligament of the ankle-joint ; 4, part of the long and short calca- 

 neo-cuhoid ligaments seen from the inside ; 5, two superior astragalo-scaphoid or talo- 

 scaphoid ligaments ; 6, internal talo-scaphoid ligaments ; 7, internal scaphoido-cuneiform 

 (first) ; 8, dors;il or superior cuneiform ; 9, scaj^hoido-cuneiform (second) ; 10, inter- 

 cuneiform, or transverse dorsal cuneiform, between the first and second cuneifonn bones ; 

 11, internal or first tarso-metatarsal ligament ; 12, inferior first tarso-metatarsal ; 13, in- 

 ternal latei-al metatarso -phalangeal ; the internal sesamoid bone is seeu below ; 14, 

 internal lateral interi^halangeal ligament of the first toe. 



