646 



DISSECTION OF THE LEG. 



and larger externally than internally, for the scaphoid bone. The sca- 

 phoid bone is hollowed, and is widest externally. 



Movement. The scaphoid moves down and in over the transversely 

 elongated head of the astragalus, or up and out in the opposite direction. 



As the bone is forced downwards, the upper and external ligaments of 

 the joint are made tight ; and when the scaphoid is moved in the opposite 

 way the strong inferior ligament is put on the stretch. 



THE os c ALOIS WITH THE CUBOID BONE. The ligaments in this arti- 

 culation are plantar and dorsal, the former being much the strongest ; and 

 there is also an internal band. 



The dorsal ligament (fig. 223, g) (superior calcaneo-cnboid) is a rather 

 thin fasciculus of fibres, which is attached near to the contiguous end of 

 the os calcis and the cuboid bone ; it is sometimes divided into two parts, 

 or it may be situate at the outer border of the foot. 



At the inner side of the os cuboides is a stronger internal band (fig. 223, 

 f) from the os calcis, this is fixed behind to the upper part of the os calcis 

 external to the band to the scaphoid bone, and in front to the contiguous 

 inner side of the os cuboides. 



Fig. 224. 



Fig. 225. 



-1 



PLANTAR LIGAMENTS OF THE FOOT (Bourgery). 



1. Long plantar ligament. 



2. Deep portion of the inferior calcaneo-cu- 



boid ligament. 



3. Tendon of the peroneus longus muscle. 



VIKW OF THE INFERIOR LIGAMENTS OF THE 



TARSAL BONES. 

 a. Long plantar, cut. 



&. Short or deep inferior calcaneo-cuboid liga- 

 ment. 



c. Inferior calcaneo-scaphoid. 



d. Plantar transverse scapho-cuboid ligament. 



e. Dorsal inner scapho-cuneiforrn extending into 



the sole of the foot. 

 /. Plantar transverse ligament between the inner 



and middle cuneiform bones. 

 g. Plantar transverse band between the cuboid 



and outer cuneiform. 



The inferior calcaneo-cuboid liyament in the sole of the foot (fig. 224) 

 is much the strongest, and is divided into a superficial and a deep part : 



