PLATE XXVI. 

 THE BUTTOCK, GLUTEUS MEDIUS, &c. 



In this dissection the gluteus maxiiuus has been cut across its middle and the ends 

 turned up and down, and the fibres arising from the great sacro-sciatic ligament have 

 been partly detached in order to show more clearly the edge of the ligament. 



The parts which are exposed by complete removal of the gluteus maximns are 



Bones. Ilium, edge of sacrum and coccyx, tuber ischii, great trochanter, and gluteal 

 ridge on the femur. 



Ligaments. Great and lesser sacro-sciatic. 



Bursa. One over tuber ischii, one over great trochanter, and one between the tendon 

 of the vastus externus and that part of the gluteus maximus which is 

 inserted into the fascia lata. 



Muscles. Gluteus medius, pyriformis, obturator internus and the gemelli, tendon of the 

 obturator externus, quadratus femoris, adductor magnus, biceps, semi- 

 tendinosus, semimembranosus, vastus externus. 



Vessels. Gluteal, sciatic, with its coccygeal, muscular, anastomotic, comes nervi 

 ischiadici, and terminal branches, pudic, internal circumflex, and first 

 perforating. 



Nerves. Great and small sciatics, inferior gluteal, inferior pudendal, internal pudio, and 

 the nerve to the obturator internua. 



