Fractures of the Tarsal Bones. 157 



3. 320. Fracture of the Os CalciS. — Lower end of a left tibia 

 and fibula, with the astragalus and remains of a broken os calcis 

 — muscles dissected off and in spirit. 



A young woman, 19 years of age, leaped from a window two floors 

 from the street, and fractured the os calcis into six or eight fragments, one 

 of which projects into the back part of the ankle-joint. Several weeks 

 after the injury, in consequence of disease of the joint and abscesses about 

 the foot, associated with necrosis, amputation of the leg was performed. 

 The patient recovered. 



The greater part of the os calcis seems to have been crushed 

 up behind and to the outer side of the astragalus. Some new 

 bone has been formed on the sides of the original os calcis, 

 while at the back a cavity extends into its substance, near the 

 orifice of which there is a piece of dead bone. G. C. 1981. 

 Presented by Alexander Watson, Esq., March 1839. 



3. 321. Fracture of the Os Calcis.— The lower end of a right 



tibia, fibula, astragalus, and portion of the os calcis — cleaned, 

 and in spirit. 



The upper portion of the os calcis has been comminuted, 

 and is separate from the lower. The broken surfaces are 

 apparently covered by lymph. The articular cartilage upon the 

 astragalus and outer malleolus is roughened and partially 

 removed. This has probably been a case of compound fracture 

 of the OS calcis, followed by inflammation and suppuration. 



G. C. 3504. 



GUNSHOT FEACTURES OF THE LOWER LIMB. 

 {a.) Chiefly from Waterloo. 



3. 322. Old-Standing" Gunshot Fracture of the Ilium.— 



Left ilium — macerated, to show the above. A portion of the 

 bullet is wired in position. 



"This man had been wounded by a small rifle ball. It had 

 penetrated the ilium, and lay just within the bone, being prevented 



