THE FIBULA 



251 



MEDIAL CONDYLIC 

 SURFACE 



INTERCONDYLOID EMINENCE 



LATERAL CONDYLIC 



SURFACE 



POPLITEAL 



NOTCH 



APEX OF 



THE HEAD 



The body of the fibula (corpus fibulae) presents many varieties in the details 

 of its shape and form, being ridged and channelled in such a way as greatly 

 to increase the difficulties of the student in recognising the various surfaces 



described. It is described as 

 possessing three surfaces, named 

 the lateral, the medial, and the 

 posterior. The surfaces are separ- 

 ated from one another by three 

 borders or crests, named medial, 

 HEAD lateral, and anterior ; and, in 



addition, the medial surface is 

 traversed longitudinally by a 

 ridge called the interosseous crest, 

 which divides it into an anterior 

 and a posterior part. The most 

 important point is first to de- 

 termine the position of the 



LATERAL CREST 



INTEROSSEOUS 

 CREST 



GROOVE FOR 



TENDONS OF 



LATERAL 

 MALLEOLUS 



LONGUS AND 



TALUS - BBKVIS 

 GROOVE FOR, 

 FLEXOR HALLUCIS 



LONG US 



FIG. 250. THE RIGHT TIBIA AND FIBULA SEEN PROM 



BEHIND. 



The Posterior surface of the fibula is coloured red ; the 

 lateral surface is left uncoloured. 



SEMIMEMBRANOSUS 



SOLEUS' 



TlBIALIS POSTERIOR 



FLEXOR HALLUCIS LONGUS 



PERON^US LONGUS 

 AND BREVIS 



FIG. 251. POSTERIOR ASPECT OF THE 

 BONES OF THE LEG WITH ATTACH- 

 MENTS OF MUSCLES MAPPED OUT. 



