THE FEMUR 



151 



part, to the anterior crucial ligament. The outer surface of the external condyle 

 presents near the lower and posterior margin a deep groove, which receives the 

 tendon of the jjopliteus muscle when the leg is flexed. The anterior end of the 

 groove terminates in a pit which gives origin to the popliteus tendon. The groove 

 is surmounted by a tubercle for the external lateral ligament of the knee. 



The patellar facet is trochlear in shape; its outer portion is more extensive 

 than the inner, corresponding to the disposition of the articular facets on the 

 povsterior surface of the patella. 



Fig. 161. — The Left Fe.mur at the Twentieth Year. (Posterior view.) 



APPEARS IN THE FIRST, AND FUSES IN THE 

 TWENTIETH YEAR 



APPEARS IN THE FOURTH. AND UNITES IN THE 

 NINETEENTH YEAR 



APPEARS IN THE FOURTEENTH, AND UNITES 

 IN THE EIGHTEENTH YEAR 



APPEARS EARLY IN THE NINTH MONTH OF 

 INTRA-UTERINE LIFE, AND UNITES AT 

 THE TWENTY-FIRST YEAR 



Muscles attached to the femur: 



Piriformis. 



Obturator internus and gemelli. 



Obturator externus. 



Pectineus. 



Quadratus femoris. 



Gluteus maximus. 



Gluteus medius. 



Gluteus minimus. 



Psoas. 



Iliacus. 



Adductor brevis. 

 Vastus internus. 

 Adductor magnus. 

 Adductor longus. 

 Vastus externus. 

 Crureus and subcrureus. 

 Biceps. 



Gastrocnemius. 

 Plantaris. 

 Popliteus. 



