ARTICULATIONS OF Till: l'n*Ti:nil! I.IMIIS. 161 



2. Coxo-femortil Articulation. 



(7V/'i/r<(//o/i. Remove the muscleu surrounding the articulation. To view the 

 interior, .livid.' the capaulur ligament by a circular incision.) 



This is an enarthrosis, formed by the reception of the head of the 

 lemur into the cotyloid cavity of the coxa. 



Articular surfaces. As already shown, the cotyloid cavity represents 

 the segment of a hollow sphere, deeply notched on the inner side, and 



Fig. 90. 



8ACRO-1UAC AND COXO-KKMORAL ARTICULATIONS, WITH THE SMALL Ml I- 

 MU8CLK8 SURROUNDING Till: LATTER. 



1, Srirr->-iliac ligament; 2, Sacro-ischiatic ligament ; 3, Great ischiatic notch; 4, 

 Ant'-rir jmrtii'ii of the capsular ligament of the cox o- femoral articulation; 5, 

 Internal band of cotyloid ligament; 6, Coxo-femoral li^am.-nt ; 7, 1'ubio-femoral 

 ligament; 8, Its insertion into the femur; 9, Small gluteal muscle ; 10, Origin 

 of the straight anterior muscle of the thigh (rectus); 11, Anterior thin muscle 

 (rectus parvus); 12, Pyramidal muscle of the pelvi-; 1::. Kxternal obturator 

 muscle; 14, Square crural muscle (quadratus femoris); 15, Inferior sacro- 

 coccygeal muscle. 



provided at the bottom with a wide depression, the internal moiety of which 

 is destined for the insertion of one of the interossoous ligaments, while tho 

 mil half plays the part of a synovial fossa. This depression is not 

 <<>v.rod by cartilage, and communicates by tho internal notch with tho 

 inf. rior furrow on the pubis. Tho lip of the cotyloid cavity is covered by 

 a complementary fibro-cartilago the cohjloi,! ligament. This nbro-cartilage 

 is not interrupted at the notch just mentioned, but passes over it, forming a 

 remarkable band (Fig. 90, 5) that converts it into a foramen, through wliieh 

 pass tho pubio- or ilio-femoral ligament and the vessels of tho articulation. 



