FRONT LIMB 13 



called knee spavin, a bony enlarj^ement especially on the inner 

 side of the knee. The metacarpal is subject to fracture and 

 splint, the latter a bony enlargement resulting from injury and 

 inflammation and producing temporary lameness and an un- 

 soundness. The principal metacarpal is a common seat of frac- 

 ture and is a rather favorable place so far as treatment and 

 recovery are concerned. The first and second phalanges are 

 subject to fracture and ringbone, the latter a bony enlargement 

 due to inflammation produced by injury, and to heredity. This 

 causes serious unsoundness and often permanent lameness. 

 Fracture of the first phalanx is not uncommon. Both the first 

 and second phalanges are often injured in barb wire accidents. 

 The third is subject to sidebone, i.e., a bony enlargement having 

 about the same causes and results as ringbone. The sole of the 

 third phalanx is subject to common and serious injury by punc- 

 ture through the sole. The navicular bone is subject to injury 

 from puncture resulting in inflammation of this bone and to 

 one form of a rather common disease of roadsters known as 

 navicular disease. 



