ARTHROLOGY. 49 



{/?) Deep portion, from tibia to astragalus and calx. 



Action. 



Flexion and extension. 



Calcaneo-astrag-aloid. 



A compound diarthj'odia between three or four facets on as- 

 tragalus, with same on calx. 



Ligaments. 



Superior, external lateral, ititernal lateral and ifiterossesous, 

 running from one bone to another, as their names imply. 



Action. — Very limited. 



Second r^w of tai'sus with each other. Between scaphoid, 

 cuboid and two cuneiforms. 



Ligaments. 



Two anterior, the cuboido-cunean and ciiboido-scaphoid 2lwA two 

 corresponding interosseous. 



An interosseous scaphoid-cunean and intei'-cunean. 



Action. — Very limited. 



Two roivs of tarsus with each other. 



Ligaments. 



Two lateral ligaments of tibio-tarsal joint. 



Calcaneo-inetatarsal. from posterior border of calx to cuboid 

 and head of external metatarsal. 



Asiragalo-metatarsal, from inner side of astragalus to scaphoid, 

 great cuneiform and middle metatarsal. 



Posterior tarso-metatarsal ixoxvi all of tarsus to top of metatarsus. 



One interosseous, between four bones. 



Action. — Very limited. 



Tar SO -metatarsal. 



Between cuboid and cuneiform above, and metatarsal below. 



Ligaments. 



Those previously described and one strong interosseous. 



Synovial sacs of tarsus. 



I . Membrane of tibio-tarsal articulation, communicates in front 

 with that between the two rows, and behind with the superior 

 articulation of astragalus with calx, 



