

THE M USC LEI 



REGION 







anterior two-thirds by the gluteal 

 aponeurosis, which separates it 

 from the superficial fascia and 

 integument. It arises from the 

 outer surface of the ilium between 

 the iliac crest and posterior glu- 

 teal line above, and the anterior 

 gluteal line below; it also arises 

 from the gluteal aponeurosis 

 covering its outer surface. The 

 fibers converge to a strong flat- 

 tened tendon, which is inserted 

 into the oblique ridge which runs 

 downward and forward on the 

 lateral surface of the greater tro- 

 chanter. A bursa separates the 

 tendon of the muscle from the 

 surface of the trochanter over 

 which it glides. 



Variations. The posterior border 

 may be more or less closely united to 

 the Pirif ormis, or some of the fibers end 

 on its tendon. 



The Glutseus minimus, the small- 

 est of the three Glutsei, is placed 

 immediately beneath the preced- 

 ing. It is fan-shaped, arising from 

 the outer surface of the ilium, 

 between the anterior and inferior 

 gluteal lines, and behind, from 

 the margin of the greater sciatic 

 notch. The fibers converge to 

 the deep surface of a radiated 

 aponeurosis, and this ends in a 

 tendon which is inserted into an 

 impression on the anterior border 

 of the greater trochanter, and 

 gives an expansion to the capsule 

 of the hip-joint. A bursa is 

 interposed between the tendon 

 and the greater trochanter. Be- 

 tween the Glutseus medius and 

 Glutseus minimus are the deep 

 branches of the superior gluteal 

 vessels and the superior gluteal 

 nerve. The deep surface of the 

 Glutseus minimus is in relation 

 with the reflected tendon of the 

 Rectus femoris and the capsule 

 of the hip- joint. 



Variations. The muscle may be di- 

 vided into an anterior and a posterior 

 part, or it may send slips to the Piri- 

 formis, the Gemellus superior or the 

 outer part of the origin of the Vastus 

 lateralis. 



Medial 

 hamstring 



tendons 

 Sartorius 



Gracilis 



Semitendinosus 



Semi- 

 membranosus 



Lateral 



hamstring 



tendon 



Biceps 

 femoris 



Fio. 434. Muscles of the gluteal and posterior femoral regions. 



