128 



LABORATORY MANUAL OF HUMAN ANATOMY 



this muscle. The quadratus femoris may now be reflected 

 by detaching it from the femur and turning it towards 

 the ischial tuberosity. The nerves supplying these mus- 

 cles are derived from the tibial nerve (N. tibialis), a 

 branch of the N. ischiadicus. 



FIG. 49. 



M. glutaeus max._ 



N. glutaeus sup. --| ^ 



9 \ 



Lig. sacrotuberosum- - 



N. pudendus 



Ramus perineal, 



N. cut. fern. 



post. 



M. glutaeus min. 

 - -- M. tensor fasc. lat. 



M. piriformis 



N. ischiadicus 

 - M. quad. fern. 



-M. glutaeus max. 



N. cut. fern, post 



Nerves of the gluteal region (after Hirschfeld, simplified). (From Poirier et Charpy, Trait6 d'Anat. 

 hum., Paris, 1899, t. iii. p. 1111, Fig. 580.) 



(bb) Posterior cutaneous nerve of thigh (N. cutaneus femoris 

 posterior] (0. T. small sciatic). 



(bba) Inferior nerves of buttock (Nn. clunium infe- 



r iores ) . 



(bbb) Perineal branches (rami perineales). 



(be) Pudendal nerve (N. pudendus) (0. T. internal pudic 



nerve). 

 (bd) Inferior gluteal nerve (N. glutaeus inferior). 



Mm. Glutaei Medius et Minimus and Adjacent Structures. 



The M. glutaeus medius should be reflected after a careful 

 study has been made of the preceding structures. Eotate the 



