Pathology of Stumps. 603 



each, especially upon the tibia. A firm mass of bone unites 

 their distal ends together. 



Possibly this condition has been due to a chronic ulcer on 

 face of the stump. B. C. 1. 5. M. 43. 



11. 96. Stump of a Femur, with Necrosis and Thicken- 

 ing". — Section of the injected stump of a femur — macerated, 

 illustrating' the above. 



A small necrosed fragment at the end has been in process 

 of separation, and a strong crust of new bone has been formed 

 round the sawn extremity. W. C. G. 22. 



11. 97. Stump of a Femur after Amputation. — Section of 

 the injected stump of a femur — in spirit, illustrating the above. 

 Round the sawu extremity there is a considerable crust of 

 bone, which extends for some distance up the shaft, Avhile new 

 bone has been forming across the end of the medullary cavity. 

 The vascularity of the new bone is well shown by the injection. 

 The large amount of new bone has, no doubt, been due to 

 septic inflammation of the soft parts over the bone. 



B. C. 1. 5. M. 44. 



11, 98. Stump of a Femur, altered by Chronic Septic 



Osteo-myelitis. — Enlarged end of a femur after amputation — 

 macerated, illustrating the above. 



The lower end is rounded in shape, but its surface is 

 irregular and is covered by a spongy carious bone. The whole 

 shaft is greatly thickened. The original compact tissue cannot 

 be traced. The wall of the medullary cavity is formed of 

 bone, which is intermediate in character between cancellous and 

 compact tissue. It is of irregular thickness. W. C. G. 23. 



