I044 



A MANUAL OF ANATOMY 



The anterior chondro-sternal ligament is a triangular band, the 

 upper fibres of which ascend upon the sternum, and the lower 

 descend, whilst the intervening fibres pass horizontally forwards. 

 They decussate with those of the opposite side, and blend with 

 the tendinous fibres of origin of the pectoralis major muscle. 



The posterior chondro-sternal ligament is disposed in a manner 

 similar to the anterior ligament. 



The superior and inferior chondro-sternal ligaments pass from 

 the upper and lower borders of the costal cartilage to the side of 

 the sternum. 



The interarticular ligament is present in the 2nd joint, and may 

 be present in some of those succeeding to it. Its fibres extend 

 horizontally between the centre of the sternal end of the 2nd 

 costal cartilage and the plate of fibro- cartilage between the manu- 



FiG. 433.— The Chondro-sternal Joints (Anterior View). 

 The Secoi.- ^^-^^^^^ ^nd Fourth Joints of the Left Side are seen in Section. 



brium and ^°^^^^^^g^;\ties+ernum. It divides this joint into two 

 The ist io;i;t ^^f^i"^ synov^. ^^^^^^^^^^ ^^^ ^^^^ ^^^^^^ cartilage 

 being directly um^ ^ial membic.ium sterni. The 2nd joint, 

 as stated, ^^^^Jr^"- V-^^r ligament. 1 one above and the other 

 below ^^f^^'l'l'lovi^X membrane, bx. .^eceeding joints have 

 each usually one sy ometimes one or more 



of them may have two ■ or perfoi 



Arterial ^^^^f^"^' ng branches of the 



interchondral Articu^^^^^^^ T,, ^he class diar- 



throsis, and to tne s _^^^ ^^^^^ ^^^ cartilages involved 



are usually the btti, 7 . ^^^.^^^ J^^ ^^^ ^^^^ 



