THE KNEE-JOINT 



335 



in front; its anterior extremity, thin and pointed, is attached to a depression on the 

 anterior margin of the head of the tibia, in front of the anterior crucial ligament; 

 its posterior extremity is attached to the depression behind the spine, between 

 the attachments of the external cartilage and the posterior crucial ligaments. 



The external semilunar fibrocartilage (meniscus lateral is) forms nearly an entire 

 circle, covering a larger portion of the articular surface than the internal one. 



TCNDON OF QUAD- 

 RICEPS EXTENSOR 

 FEMORIS 



SUPRAPATELLAR 

 BURSA 



ARTICULAR 

 CAVITY 



LONG EXTERNAL 



LATERA 

 LIGAMENT 



PREPATELLAR 

 BURSA 



EXTERNAL SEMI- 

 LUNAR FIBRO- 

 CARTILAGE 



LIGAMENTUM 

 PATELLAE 



DEEP INFRAPATEL- 

 LAR BURSA 



TUBEROSITIES 

 OF TIBIA 



FIG. 271. Right knee-joint, from the lateral surface. The joint cavity and several bursse have been injected 

 with a stiffening medium and then dissected out. (Spalteholz.) 



It is grooved on its outer side for the tendon of the Popliteus muscle. Its ex- 

 tremities, at their insertion, are interposed between the two extremities of the 

 internal cartilage; the anterior extremity is attached in front of the spine of the 

 tibia to the outer side of, and behind, the anterior crucial ligament, with which 

 it blends; the posterior extremity is attached behind the spine of the tibia, in 

 front of the posterior extremity of the internal cartilage. Just before its insertion 



