54 



PLATE XXVII. 



MUSCLES 



A Gluteus medius. 



A' Gluteus medius insertion. 



B Gluteus minimus. 



C Pyriformis. 



D Placed on the deep (tendinous) surface 



of the obturator interims. 

 D' Insertion of the obturator and gemelli, 



turned back. 

 E Superior gemellus. 

 F Inferior gemellus. 

 G Obturator externus. 

 H Quadratus femoris. 

 I Adductor magnus. 

 J Part of adductor magnus, which is 



sometimes called adductor quartus 



or minimus. 



K Insertion of gluteus maximus. 



L Biceps and semitendinosus cut and 



turned back. 



M Semimembranosus. 



N Vastus externus. 



Pectineus. 



P Psoas tendon. 



S Tensor vaginae femoris. 



T Great sacro-sciatic ligament. 



R Small trochanter. 



V Great trochanter (posterior superior 



angle). 



Y Capsule of hip-joint. 



Z Lesser sacro-sciatic ligament. 



VESSELS 



a Gluteal artery. 



b Its superficial division. 



c Its deep division. 



d Its anastomotic branch to digital fossa. 



e Sciatic artery. 



/ Its coccygeal branch. 



g Its anastomotic branch to digital fossa. 



h Internal pudic. 



* Terminal branch of internal circumflex 



exiting between quadratus femoris 

 and adductor magnus. 



k Ascending branch of internal circum- 

 flex running up in front of quadratus 

 to digital fossa to anastomose with 

 d and g. , 



I First perforating artery from the pro- 

 funda femoris. 



NERVES 



1 Great sciatic. 



2 Small sciatic. 



8 Inferior gluteal. 



4 Superior gluteal. 



4' Branch to the tensor vaginae femoris. 



5 Internal pudic. 



6 Nerve to obturator internus and 



superior gemellus. 



7 Nerve to quadratus femoris. 



8 Branch of 7 to the inferior gemellus. 



9 Branch of 7 to hip -joint. 



10 Cutaneous branch from posterior 

 primary division, first sacral. 



11 Cutaneous branch from posterior 



primary division, second sacral. 



12 Cutaneous branch from posterior 



primary division, third sacral. 

 18 Cutaneous branch from posterior 

 primary division, fourth sacral. 



14 Fifth sacral. 



15 Coccygeal. 



16 Perforating cutaneous nerve from the 



anterior branch of the fourth, or 

 third and fourth sacral. 



17 Branches from great sciatic to the 



hamstrings. 



Note, The nerve to the tensor vaginas femoris usually runs through the fibres of the gluteus 

 minimus. 



