POSTERIOR PART OF I.OM'ER EXTREMITY. 



373 



The Inferior Gluteal Nerve. A branch of the sacral plexus. Leaves the 

 pelvis by the. greater sacro-sciatic toratnen, below tlie pyriformis, and supplies 

 the glutens nuixiinus. ( Fig. j;S.) 



The Lesser Sacro-sciatic Foramen. The notch of the *ame name is con- 



Qluteua mediu 



Pyrifor 



Qemellua auperi 

 Oem 



illua auperior- HU 

 elluB Inferior - IL 



Quadratua lemorie 



Qluteua maximu 



Vastua externuB 

 Biceps 



Crureus 

 Short head of biceps 



Plantaris 



Gastrocnemius 



Obturator internua 



Adductor magnus 



OracilU 



Semi -to ndi noaua 



Semi-membranoaua 

 Sartoriua 



Semi-tendmomuB 



'S ( >. " 



KXTERNAL ROTATORS AND 1H1, IlAMsTKINC ML'SCLKS. 



verted into this foramen by \\\t greater stwro-sciatic ligament. (Fig. 259.) It trans- 

 mits the internal obturator tendon and its nerve, the internal pudic nerve, artery, 

 and vein. { Fi^. 258.) The vessels and nerve lie above the tendon. To trace these 

 structures properly, it will be necessary to remove the glutens maximus from the 



