SHOITLDEE SPEAIN. 515 



to the cautery may be considered. For general particulars 

 relating to Firing and Blistering, see pages 470 to 471. 



"VYHen a patient aiFected with Curb is again put to work, 

 the hind feet ought to be shod with longer caulkens or deeper 

 heels than ordinary, and the shoe maintained so for a consider- 

 able time afterwards. 



SHOULDER SPRAIN. 



Horses are sometimes lame in consequence of disease in the 

 shoulder. The principal forms of shoulder lameness are three, 

 viz. — lameness from Eheumatism ; sprain of the tendon of the 

 flexor brachii; and disease of the articulatory surfaces of the 

 bones which constitute the joint of the shoulder. The most 

 common of the two latter, is sprain of the tendon of the flexor 

 brachii. 



Shoulder lameness, comparatively speaking, is not common ; 

 but when it does occur, the symptoms are generally so well 

 marked, that little difficulty need be experienced in determining 

 the nature and seat of the disease. The engraving in the next 

 page will aid the reader to a more complete understanding of 

 this matter : a the scapula, or the blade bone of the shoulder : 

 h the lower end of the scapula, or the situation of the shoulder 

 joint : e the triceps extensor brachii muscle — extensor of the 

 arm and elbow joint of the fore limb : c the tendon of the 

 flexor brachii muscle : b the body of the muscle : f the 

 elbow joint : ff the extensor metacarpi magnus muscle (this 

 muscle is merely shown in outline). The principal structure, 

 however, to which the attention of the reader is directed, is 

 the flexor brachii c d. The tendon c is of considerable length J 

 and where it passes over the front part of the shoulder 

 joint h, it is provided with a large bursa, or synovial bag. The 

 space enclosed between the lines c is where the tendon is generally 



