20 THE POCKET ANATOMY 



to the under surface of the os calcis in front of the tuberosities ; 

 it passes to the posterior margin of the peroneal groove of the 

 cuboid ; some of the fibres arch over the sheath of the tendon, 

 and are attached to the bases of the and, 3rd and 4th meta- 

 tarsal bones. 



The short calcaneo-cuboid ligament is more deeply placed , 

 it reaches from the tubercle and depression on the under 

 surface of the os calcis to the under surface of the cuboid 

 behind the peroneal groove. 



VI . T ARSO-METATARSAL ARTICULATIONS. 



The metatarsal bones are connected to the tarsus by : 



Dorsal ligaments, one to each metatarsal bone from the 

 tarsal bone it articulates with. The 2nd metatarsal has a 

 slip from each cuneiform bone. 



The plantar ligaments, disposed irregularly. 



The interosseous ligaments, strong bands, three in number. 

 The internal one passes from internal cuneiform to the 2nd 

 metatarsal. The middle one passes between the external 

 cuneiform and the 2nd metatarsal. The external connects the 

 external cuneiform and the 3rd metatarsal. 



The synovial membranes of the tarsus and metatarsus are 

 six in number : 



One for the posterior calcaneo-astragaloid articulation. 



One for the anterior calcaneo-astragaloid articulation and 

 the scapho-astragaloid articulation. 



One for the calcaneo-cuboid articulation. 



One for the articulations of the scaphoid, and the three 

 cuneiform bones ; the cuneiform bones with each other ; the 

 external cuneiform and the cuboid ; and the middle and 

 external cuneiform bones with the bases of the 2nd and 3rd 

 metatarsal bones. 



One between ist metatarsal and internal cuneiform. 



One for 4th and sth metatarsal with cuboid. 



VII. ARTICULATIONS OF THE METATARSAL BONES WITH 

 EACH OTHER. 



The bases of the metatarsal bones are connected by dorsal, 

 plantar, and interosseous ligaments. 



The digital ends are united by the transverse metatarsal liga- 

 ment, which on the plantar aspect connects the ist metatarsal 

 with the others (compare with hand). 



VIII. METATARSO-PHALANGEAL ARTICULATIONS. 



These articulations are precisely similar to the correspond- 

 ing parts of the hand. 



