THE SKELETON. 



Head. 

 Styloid process. 



EXTERNAL 

 LATERAL 



LIGAMENT. 



Fibula. 



Tibia. 



Head. tibia, or, in popular language, the 



shin ; it commences above at the 

 tubercle, and terminates below at 

 the anterior margin of the inner 

 malleolus. This border is very 

 prominent in the upper two- 

 thirds of its extent, smooth and 

 rounded below. It presents a 

 very flexuous course, being usually 

 curved outward above and inward 

 below ; it gives attachment to the 

 deep fascia of the leg. 



The internal border is smooth 

 and rounded above and below, 

 but more prominent in the 

 centre ; it commences at the 

 back part of the inner tuberosity, 

 and terminates at the posterior 

 border of the internal malleolus ; 

 its upper part gives attachment 

 to the internal lateral ligament 

 of .the knee to the extent of 

 about two inches, and to some 

 fibres of the Popliteus muscle ; 

 its middle third to some fibres 

 of the Soleus and Flexor longus 

 digitorum muscles. 



The external border, or in- 

 terosseous ridge, is thin and 

 prominent, especially its central 

 part, and gives attachment to 

 the interosseous membrane ; it 

 commences above in front of the 

 fibular articular facet, and bifur- 

 cates below, to form the bounda- 

 ries of a triangular rough surface, 

 for the attachment of the inter- 

 osseous ligament connecting the 

 tibia and fibula. 



The internal surface is smooth, 

 convex, and broader above than 

 below ; its upper third, directed 

 forward and inward, is covered 

 by the aponeurosis derived from 

 the tendon of the Sartorius, and 

 by the tendons of the 'Gracilis 

 and Seinitendinosus, all of which 

 are inserted nearly as far forward 

 as the anterior border ; in the rest 

 of its extent it is subcutaneous. 



The external surface is nar- 

 rower than the internal ; its upper 

 two-thirds presents a shallow 

 groove for the attachment of the 

 Tibialis anticus muscle; its lower 

 third is smooth, convex, curves 

 gradually forward to the anterior part of the bone, and is covered from within 



Internal malleolus. 

 External malleolus. 

 FIG. 220. Bones of the right leg. Anterior surface. 



