ARTICULA TIONS. LIGAMENTS. 



449 



for the peroneus longus ; (6) the outer is almost negative, and is continuous with 

 the inferior surface. 



Can you say anything more about the inferior surface of tJic cuboid bone f 



Yes ; it has a ridge behind the peroneal groove, for the attachment of the 

 long calcaneo-cuboid ligament ; this ridge terminates externally in the sesamoid 

 articular surface, which articulates with the peroneal sesamoid bone, in the 

 tendon of the peroneus longus. The flexor brevis hallucis also derives its origin 

 on this surface of the bone. (Fig. 314.) 



Describe t/ie surfaces of the internal cuneiform. 



(i) The internal surface has the insertion of the tibialis anticus ; (2) the exter- 

 nal articulates with the second metatarsal and middle cuneiform ; (3) the anterior 



Antero-inferior tibio-flbular 

 ligament 



Anterior ligament of ankle-joint 



Outer extremity of the 



mterosseous ligament 



External calcaneo- 

 scaphoid ligament 



Postero-inferior tibio- 

 flbular ligament 



Fasciculus of posterior 

 ligament of ankle 



Posterior fasciculus of 

 external lateral ligament 



ligament 

 Internal calcaneo-cuboid 



Dorsal External Middle fasciculus of external lateral 

 alcaneo- calcaneo- ligament of the ankle 



cuboid astragaloid 

 ligament 



FIG. 317. EXTERNAL VIEW OF THE LIGAMENTS OF THE FOOT AND ANKLE. 



articulates with the first metatarsal bone ; (4) the posterior articulates with the 

 scaphoid bone ; (5) the inferior has the insertion of the tibialis posticus. 



Describe the surfaces of the middle cuneiform. 



(i) The anterior articulates with the second metatarsal bone ; (2) the posterior 

 articulates with the scaphoid bone ; (3) the internal articulates with the internal 

 cuneiform bone ; (4) the external articulates with the external cuneiform bone ; 

 (5) the superior surface is rough, for ligamentous attachment; (6) into the in- 

 ferior surface is inserted the tibialis posticus muscle and ligaments. 



Describe the surfaces of the external cuneiform. 



(i) The anterior articulates with the third metatarsal ; (2) the posterior with 

 the scaphoid bone ; (3) the internal with the middle cuneiform bone ; (4) the 

 external with the fourth metatarsal and cuboid bone ; (5) the inferior is for 

 tibialis posticus and ligaments ; (6) the superior is for ligamentous attachment. 



