270 Diseases of Bone. 



6. 169. Rarefaction of Frag-ments of the Fibula after 



Compound Fracture. — Lower half of a fibula, portions 

 wanting — muscles cleaned off — dried, to illustrate the above. 



About three inches of the bone have disappeared. The 

 margins of the remaining fragments are rarefied, and a crust of 

 new periosteal bone has been developed near. These changes 

 have probably been caused by a severe compound fracture. 



G. C. 1144. 

 Presented hy Professor James Russell. 



6. 170. Absorption and Irreg-ular Outgrowth of the Tibia 

 after Compound Fracture. — Lower end of a right tibia — 



macerated, illustrating the above. 



The upper end of the fragment is atrophied and smoothed 

 oflf at some places, while at others it shows irregular outgrowths. 

 The case has apparently been one of compound fracture in 

 process of healing by fibrous tissue. B. C. i. 5. M. 80. 



c. AVhere the chief changes are in the form of enlargement. 



6. 171. Periosteal Thickening following Compound Frac- 

 ture. — Upper portion of a right fibula, after fracture — 

 macerated, showing the above. 



At the broken part there is some irregularity from absorp- 

 tion, and beyond that a crust of new periosteal bone has 

 developed. This is probably the result of a compound fracture. 



B. C. I. 5. M. 87. 



6. 172. Rarefaction and Periosteal Crust from a Septic 



Wound. — Lower half of a right fibula — macerated, illustrating 

 the above. 



There are marks of rarefactive ostitis at the malleolus, and 



