DISSECTION OP THE ANTERIOR LIMB. 



53 



It possesses an interosseous ligament, and two pairs of lateral ligaments. 



The Interosseous Ligament is composed of short fibres passing from 

 the inferior border of the navicular bone to the os pedis behind its artic- 

 iilar surface. 



The Antebo-Lateral Ligaments. Each of these passes from the side 

 of the OS coronse to be inserted into the excavation at the side of the 

 pyramidal process of the os pedis. 



The Postero-Lateral Ligaments. These seem to be the downward con- 

 tinuations of the lateral ligaments of the pastern-joint. Passing from the 

 side of the os coronse, each is inserted into the upper border of the nav- 

 icular bone, and sends slips to the wing of the os pedis and inner surface 

 of the lateral cartilage. 



Synovial Membrane. This is supported in front by the extensor 

 tendon, and laterally by the lateral ligaments. A protrusion of it passes on 

 each side between the antero-lateral and postero-lateral ligaments, and 

 lies in relation to the deep face of the lateral cartilage. A third protru- 

 sion passes upwards posteriorly, between the navicular bone and the back 

 of the OS coronse (Plate 10, fig. 2). 



TABULAK VIEW OF THE MUSCLES OF THE FORE LIMB IN THEIR 

 ACTION ON THE DIFFERENT JOINTS. 



SHOUI/DEE. 



( Superficial pectoral. 

 Adductors \ Subscapularis. 



(, Coraco-huraeralis. 



/Deltoid. 



I Coraco-humeralis. 



I Latissimus dorsi. 



Flexors < Teres major. 



I Teres minor. 



I Scapulo-humeralis gracilis (?) 

 yLarge head of triceps. 



Extensors 



( Supraspinatus. 



( Mastoido-humeralis. 



[Deltoid. 

 Abductors < Teres minor. 

 (, Infraspinatus. 



Rotators 

 outwards 



Deltoid 

 Teres minor 

 Infraspinatus 



Rotators 

 inwards 



Elbow. 



Flexors 



Flexors 



Flexors 



Flexors 



( Flexor braehi. 



[ Brachialis anticus. 



Mastoido-humeralis. 

 Latissimus dors^ 

 Teres major. 



( Triceps extensor cubiti. 



Extensors <. Anconeus. 



Cakpus. 



I Flexor metacarpi externus. 

 Flexor metacarpi medius. 

 Flexor metacarpi internus. 

 Flexor perforans. 

 Flexor perforatus. 



Extensors 



( Scapulo-ulnari^. 



/" Extensor metacarpi magnus. 

 J Extensor metacarpi obliquus. 

 j Extensor pedis. 

 (, Extensor suffraginis. 



Fetlock. 



Extensors 



( Extensor pedis. 



I Extensor suffraginis. 



( Flexor perforans. 

 t Flexor perforatus. 



( Flexor perforans. 

 ( Flexor perforatus. 



COB'FIN-JOINT. 



Flexor— Flexor perforans. | Extensor— Extensor pedis. 



Pastebn. 



Extensor —Extensor pedis. 



