114 



TOPOGEAPHICAL ANATOMY OF 



trochanteric crest, immediately lateral to the insertion of the external 

 obturator. 



M. OBTURATOR INTERNUS. — In the present dissection only the 

 flattened terminal part of the internal obturator muscle is visible. 

 Leaving the interior of the pelvis by the lesser sciatic foramen, where 

 there is a synovial bursa between the muscle and the bone, the flattened 

 tendon lies on the surface of the gemelli muscles, and is inserted into 

 the proximal part of the trochanteric fossa. 



Mm. seniiteiidinosus 

 et biceps fenioris. 



M. biceps femoris. 



M. glutii'us niedius. 



Mm. semitendinosus — 

 et semimembranf.sus. 



yi. semimembranosus. 



51. tensor 

 fasciie latrc. 

 il. iliacus. 

 M. glutanis superflcialis. 



Mm. gemelli. 



M. adductor. 



M. cap.sularis 

 M. rectus femoris. 



M. obturator e.xternus. 



Fig. 74. — Lateral Aspect of the Hip Bone, Sacrum, and as.sociated Ligaments, with Areas 



of Muscular Attachment. 



M. VASTUS LATERALIS. — The lateral vastus muscle arises from the 

 greater part of the lateral and anterior surfaces of the femur. Its 

 insertion is to the patella in common with the rectus femoris, 



A. GLUT^A CRANiALis. — The Cranial gluteal artery is one of the 

 branches of the hypogastric. Its origin will be disclosed during the 

 dissection of the pelvis, and it will then be seen that the vessel 

 quickly divides into a number of branches, which leave the pelvis by 

 the greater sciatic foramen, and are exposed in the present dissection. 

 They supply the gluteal muscles. 



A. GLUT.EA CAUDALLS. — The caudal gluteal artery is a vessel of some 

 size. A branch of the lateral sacral artery, it pierces the sacro-tuberous 

 ligament close to the border of the sacrum, and terminates in branches 



