Tubercular Disease of the Spine. 523 



ing falling forward of the upper parts of the canal, so as to drag 

 the spinal cord against a projectiog fragment of one of the 

 lower vertebrae. This form of " pressure paralysis " due to spinal 

 disease is not amenable to operative treatment unless indeed the 

 upper part of the column could be replaced. It is sometimes, 

 however, difficult, if not impossible, to recognise it before- 

 hand. G. C. 3481. 

 Presented by Professor T. Anxaxdalk, 1893. 



7. 233. Tubercular Disease, with Destruction of the 



Bodies. — Portions of six dorsal vertebrae of a child — 

 macerated, illustrating the above. 



The bodies of three of the vertebrae have disappeared, 

 while those of other two have been partially destroyed. In 

 such a case the caseous matter and debris of bone are apt to be 

 pressed back upon the cord. G. C. 1180. 



Presented by Professor James Russell. 



7. 234. Tubercular Disease, with Extensive Destruction of 

 the Bodies. — Left half of cervical and dorsal portions of the 

 spine of a child — partially macerated and dried, illustrating the 

 above. 



The bodies of the vertebra3 from the lower cervical to 

 the tenth dorsal inclusive have been almost entirely destroyed. 

 The spine has consequently been bent upon itself so much 

 that the lower cervical vertebrae must have been close down 

 upon the eleventh dorsal. The spinal canal has evidently been 

 almost obliterated, and extensive paraplegia must have been 

 the consequence. B. C. 1. 3. M. 57. 



7. 235. Tubercular Disease, with Destruction of the 



Bodies. — Lower four cervical and upper ten dorsal vertebrds- 

 of a child — macerated, illustrating the above. 



