i/ r>v /./> or TIII-: 



t.i.Miis. 



293 



<>t' the sacrum to the inferior extremity of the femur, following the direction 

 of the ischiatic border of the ilium, into which it is inserted. The tendon 

 to which it owes its penniform shape is inflected outwards, behind the supra- 

 e.,tyloid crest or sciatic ridge, joins tho gemelli, and terminates in the 

 lmt torn of the trochanterian fossa. 



*. In its iutrapelvic portion, this muscle responds: outwards 



Fig. 



COCCYOE.U. AND DEEP MDSCLES SCRROrXl'IXi! Till: eoXO-n:Mol; \l. Al: I I' 'I I \ I H 'N. 



1. Superior ncro-coccygeos ; _. Lateral sacro-coccygcus ; 3, Inferior sacro-coccygens ; 

 4, Isrhio-coccygeus ; "i, Si'iall glutens; (j, Anterior gracilis; 7, Tendon of tin- 

 internal ol.tnrator; 8, 8, Gemelli of the pelvis; 9, Accessory fasciculus of the 

 ..'nn-lli; 10. (Quadrat us cruralis; 11. Sacro-sciatic ligament; 1'J, (ireat sciatic 

 imtcli ; 111, Superior iliu-sacral ligament; 14, Inferior ilio-sacral ligament. 



and downwards, to tho ilinm, pubis, ischium, and external obturator ; inwards 

 and upwards, to the peritoneum, important vessels and nerves, and to a 

 fibrous lamina that separates it from tho bladder. In its extra-pelvic 

 portion, it is in relation with : behind, the middle glutcal muscle and the 

 sciatic nerves: in front, with the gemelli. A synovial sheath facilitates tho 

 gliding of its tendon in tho groove in which it turns. 



.!//</. It is a rotator of the thigh outwards, and, contrary to tho 

 opinion of the majority of authors, we believe it to produce abduction rather 

 than adduction, if at any time its position allows it to execute eilhi r of these 

 two movement-. 



9. Gani'U! ,,ftl,r 7W./x (Fig. 131, 8, 8, 9). 



Xi/Hoiiym*. behio-troahanteriaa Oininl. (QtmMPercivatt, /''/' 



.'<) 



The two small muscles which receive this name are far from presenting 



the same disposition in every subject; but wo will describe that which 



appears to be the most frequent. Two little elongated muscular fasciculi 



are usually found, one above, the other below the tendon common to th- 



]x>rtions ,f the internal obturator. These two fasciculi ( Fig. 131, 8, 8), 



from the external border of the ischium, follow the direction of the 



-mi ntii.ii'-<l I'm l.ii. mid are in.-erted into it by tie \i< rnal < xtremitien 



of their fibres, exactly representing the </eiuelli of Man. lint then- is also 



