1 62 THE PRINCIPLES OF MYODYNAMICS. 



tion and deformity, (3.) That, when sufficient 

 external violence is added to the force of 

 contracting muscles, sound cancellous tissue 

 may be more or less broken. (4.) That this 

 broken cancellous tissue may be more or less 

 impacted by having the plates and arches of 

 bone interpenetrate and overlap. 



144. Finally, attention may be drawn to the 

 important bearing of myodynamics to fractures, 

 dislocations, and orthopoedic surgery. A com- 

 plete understanding of these three great de- 

 partments of surgery can not be had without a 

 knowledge of the Principles of Myodynamics. 



