Necrosis from Sciatic Wounds. 271 



a crust of new periosteal bone is seen in patches up the 

 shaft. The cause of the septic condition is obscure — possibly 

 a compound fracture of the tibia. B. C. i. 5. M. 25. 



d. Where the chief changes are in the form of necrosis or death of a 

 palpable portion. 



(a.) Where the dead -piece has been in process of separation, 



6. 173. Septic Osteo-myelitis following" Compound Frac- 

 ture — Necrosis. — Section of an injected tibia — muscles 

 dissected off and in spirit, illustrating the above. 



The patient died of erysipelas and tetanus about two months after 

 the fracture. 



" l!^ecrosis took place, and the limits of the dead portion 

 are marked by bristles." The fragments have not been in good 

 position. The broken ends are united by fibrous tissue. There 

 is considerable thickening round about. B. C. i. 1. M. 45. 



6. 174. Septic Osteo-myelitis and Necrosis following- Gun- 

 shot (Compound) Fracture.— Portion of the shaft of a 

 femur — macerated, illustrating the above. 



The wound was received at the battle of Waterloo. 

 The fracture has been comminuted, and the broken ends 

 are irregular. The surface of the dead pieces is smooth and 

 unchanged. There are marks of rarefactive ostitis beyond the 

 dead parts, and a trench separates them from the living bone in 

 the usual way. F. P. C. 218. 



Presented hy Professor John Thomson. 



6. 175. Septic Osteo-myelitis following- Gunshot (Com- 

 pound) Fracture. — Portion of the shaft of a femur, illustrating 

 the above. 



The wound was received at the battle of Waterloo. 



