SCAPULO-CLAVICULAR. 



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of the two bones. It is in relation, above, with the interarticular fibre-cartilage 

 (when it exists) and the synovial membranes; below, with the tendon of the 

 Supru-spinatus. These two ligaments are continuous with each other in front 

 and behind, and form a complete capsule around the joint. 



The Coraco-clavicular Ligament serves to connect the clavicle with the coracoid 

 process of the scapula. It consists of two fasciculi, called the trapezoid and conoid 

 ligaments. 



The Trapezoid ligament, the anterior and external fasciculus, is a broad, thin, 

 quadrilateral-shaped band of fibres, placed obliquely between the coracoid process 

 and the clavicle. It is attached, below, to the upper surface of the coracoid 



Fig. 131. The Lelt Shoulder-joint, Scapnlo-clavicular Articulations, 

 and Proper Ligaments of Scapula- 



process ; above, to the oblique line on the under surface of the clavicle. Its 

 anterior border is free ; its posterior border is joined with the conoid ligament, 

 the two forming by their junction a projecting angle. 



The Conoid ligament, the posterior and internal fasciculus, is a dense band of 

 fibres, conical in form, the base being turned upwards, the summit downwards. 

 It is attached by its apex to a rough depression at the base of the coracoid process, 

 internal to the preceding ; above, by its expanded base, to the conoid tubercle on 

 the under surface of the clavicle, and into a line proceeding internally from it 

 for half an inch. These ligaments are in relation, in front, with the Subclavius; 

 behind, with the Trapezius : they serve to limit rotation of the scapula forwards 

 and backwards. 



The Interarticular Fibro-cartilage is most frequently absent in this articulation. 

 When it exists, it generally only partially separates the articular surfaces, and 

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