206 ANATOMY IN A NUTSHELL. 



(7) There are four strong interosseous ligaments passing between the rough 

 non-articular surfaces of these bones. 



THE LIGAMENTS BETWEEN THE OS CALCIS AND CUBOID ARE: 



(1) Superior or dorsal calcaneo-cuboid ligament. 



Inferior calcaneo-cuboid ligament. 



(3) Internal calcaneo-cuboid ligament. 



(4) External calcaneo-cuboid ligament. 



There is the long calcaneo-cuboid ligament also called ligamentum longum 

 plantar. This ligament passes between the under surface of the os calcis in 

 front of the tuberosities to the posterior margin of the peroneal groove of the 

 cuboid. Sonic of the fibers pass over the sheath of the tendon of the Peroneus 

 longus and are attached to the bases of the second, third, and fourth meta- 

 carpal bones. 



The short calcaneo-cuboid ligament passes from the tubercle and depression 

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

 the peroneal groove. 



The Joints of the Tarsus and Metatarsus. 



The ligaments of these joints are: 



(1) Dorsal tarso-metatarsal ligament. 



(2) Dorsal intermetatarsal ligaments. 



(3) Internal lateral tarso-metatarsal ligaments. 



(4) The plantar ligaments are arranged irregularly between these bones. 

 The [nterosseous ligaments which are strong bands are three in 



number: 



(1) The internal one passes from internal cuneiform to the second meta- 

 tarsal. 



(2) The middle one passes between the external cuneiform and the second 

 metatarsal. 



(3) The external one connects the external cuneiform and the third meta- 

 tarsal. 



There auk six synovial membranes of the tarsus and metatarsus: 



(1) One for the posterior calcaneo-astragaloid articulation. 



(2) One for the anterior calcaneo-astragaloid articulation and the scapho- 

 as1 ragaloid articulation. 



(3) One for the calcaneo-cuboid artciulation. 



(4) ( )ne for the articulation 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 second and 

 third metatarsal bones. 



< me 1 >et ween the first metatarsal and internal cuneiform bones. 



()')) One for fourth and fifth metatarsal with the cuboid. 



The bases of the metatarsal bones are joined by dorsal, plantar, and in- 

 terosseous Ligaments! 



The digital ends are joined by the transverse metatarsal ligament, which 

 connect- the firsl metatarsal with the others, similar to those in the hand. 



The metatarso-phalangeal and phalangeal articulation are similar to the 

 corresponding parts of the hand. 



