Dl.SKASES OK JOINTS. 



183 



bone, and an exiida^^e is thrown out, which, becoming organized 

 into bony matter, cements the bones together. The natural ter- 

 mination and cure for bone lamenesSj snch as ringbone and 

 spavins, is anchylosis. The 

 fibrous form of anchyh^sis 

 is where the surface of the 

 opposing bones are united 

 by fibrous tissue. The 

 ligamentous form causes 

 the joint to be stiff and 

 immovable, whilst the ar- 

 ticular surface of the 

 bones remains healthy. 

 Stiff joints in old horses 

 are examples of this. The 

 spurious is where there 

 is a deposit in the struc- 

 tures external to the joint 

 and uniting them to each 

 other. AVe see examples 

 after acute inflannnation of the joint, rupture of the suspensory 

 ligament, which can be removed after exercising. It may be seen 

 after open joint, and will absorb when brought into use, or it 

 may require repeated applications of iodine to the skin. 



Fig. 37— Anchylosis of Fetlock Joint. 



