EXTREMITIES. 53 



«acral ligaments, the sacro-sciatic ligament, and on the 

 trochanter of the superior extremity of the femur by 

 three branches. Action : Extensor and abductor of 

 the thityh and assists in rearino^. 



3. Deep gluteus. — Synonyms. Small ilio-trochan- 

 teriuSj (G). Gluteus parvus, (P). Attachments : The 

 neck of the ilium, the supra cotyloid crest, the inside 

 of the convexity of the great trochanter. Action : 

 Abductor of the thigh, and rotator inward indirectly. 



Crural Region, or Region of the Thigh.— Division : 

 Anterior, posterior and internal. 



Anterior Crural Region. — Three muscles. 



1. Muscle of the fascia lata. — Synonyms. Ilio- 

 tiponeuroticus, (G). Tensor vaginae, (P). Ischio ro- 

 tuleus extermis, (L). Attachments : External angle of 

 the ilium, external crest of the femur, and to the 

 patella. Action : Flexor of the femur. 



2. Crural triceps. — Division : Anterior straiglit, 

 vastus externus, vastus internus. 



a. Anterior straight. — Synonyms. Ilio-rotuleus, 

 {G). Rectus, (P). Anterior ilio-rotuleus, (L). At- 

 tachments: By two tendous to the rim of the cotyloid 

 cavity, and to the anterior face of the patella. Action ; 

 Extensor of the leg and flexor of the thigh. 



Ij. Vastus externus. — Attachments : External face 

 and external half of the anterior face of the femur, 



