DISEASES FROM FAULTY CONFORMATION 201 



point. With this shoe we shall at the same time supply a 

 certain amount of pressure to the frog, and aid in the' 

 healthy development of the part indirectly involved in the 

 disease. 



The same pressure may also be given to the frog, and 

 protection afforded the sole, by the use of a leather sole, or 

 rubber pad on leather, as described when dealing with con- 

 tracted feet. 



A further method of relieving pressure on this portion of 

 the wall, without removing the wall itself (a practice which 

 should never be advised) is to make certain alterations in 

 the web of the shoe. This may be done in one of two 

 ways. 



Fig. 102.— Three-quarter Fig. 103.— Three-quarter 



Shoe. Bar Shoe. 



In the first, that portion of the bearing surface of the 

 heel of the shoe is ' dropped ' about -J inch from the plane of 

 the remainder, so that the shoe at this position does not 

 come in contact with the foot at all (see Fig. 104). 



In the second case the shoe is what is termed ' set ' at 

 the heel. Here it is the plane of the wearing surface of the 

 shoe that is altered. The hinder portion of the required 

 heel is thinned so that its lower surface does not come into 

 contact with the ground. By this means the wall is freed 

 from concussion and pressure. At the same time the 

 upper surface of the shoe is in contact with the wall of the 

 foot (see Fig. 105). 



This ' setting ' of the shoe is preferable to the method 

 first described. It affords a greater protection to the foot, 



