Bones of the Lower Extremity. 



129 



169. Right thigh bone, 



femur, from behind. 



The upper extremity of the 

 femur (see also Figs. 168, 170 and 

 173 177) supports the caput femoris 

 (head), covered with cartilage, which is 

 directed obliquely inward an upward 

 and possesses medianward a small rough 

 depression, the fovea capitis femoris. 

 The head includes about three - fourths 

 of the surface of a sphere. It sits 

 upon the collum femoris (neck) which 

 looks flattened out from before back- 

 ward; the long axis of the neck is 

 directed obliquely medianward and up- 

 ward. At the place where the neck is 

 united with the shaft there are two 

 large projections from the posterior sur- 

 face, the trochanter major and the 

 trochanter minor. The trochanter major 

 projects directly backward and upward 

 and possesses on its medial surface, 

 below the blunt tip which is bent median- 

 ward, a deep fossa, fossa trochanterica 

 (0. T. digital fossa). The trochanter 

 minor is situated lower down and looks 

 also medianward. The crista inter - 

 trochanterica (0. T. intertrochanteric 

 line), in part very markedly projecting, 

 connects the two trochanters on the 

 posterior surface. The much less pro- 

 minent linea inter trochanterica (0. T. 

 spiral line) runs on the anterior surface 

 of the bone obliquely downward and 

 medianward from the trochanter major, 

 turns backward below the trochanter 

 minor and becomes lost in the labium 

 mediate of the linea aspera. 



Fossa trochanterica 



Fovea capitis - 



Caput femoris 



Collum 



Crista intertrochanterica 

 Trochanter minor 



Planum popliteum 



Epicondylus 

 medialis 



Coudylus 

 medialis 



C Labium laterale 

 Linea aspera < 



( Labium mediale 



Foramen uutricium 



Epicondylus 

 lateralis 



Condylus 

 lateralis 



Linea intercondyloidea 

 Fossa intercondyloidea 



Spalteholz , Atlas. 



