516 Diseases of Joints. 



The vertebrae have evidently been portions of a lateral 

 curve with its convexity to the right, and show advanced! 

 changes in the bone. At the concavity the bodies are greatly 

 compressed, and the upper two have lost more than half their 

 vertical diameter. The intervertebral space is narrowed. The 

 articular processes and laminse are compressed and firmly anchy- 

 losed together, and the adjacent parts are atrophied. It is 

 interesting to notice that the pedicles have diminished in size 

 along with the other parts, although the nerves on the inter- 

 vertebral foramina must have fended off direct bony pressure 

 from them. Possibly the pressure upon the articular processes 

 at one end, and upon the bodies at the other end of the 

 pedicles, may have led to atrophy of the intervening pedicles- 

 themselves. G. C. 986. 



7. 221. Lateral Curvature— Bone Changes.— Section of part 



of a dorsal region of the spinal column — macerated, illustrating, 

 the above. 



All parts are anchylosed. The bones are greatly absorbed^ 

 and have evidently been injured in preparation. G. C. 986. 



C. Changes from affections of the nervous system. 



See No. 6. 17. 



D. Changes due to conditions apparently constitutional, but more or 



less obscure. 

 See Series 6 under the headings of Rickets k Osteo-Malacia. 



III. INFLAMMATORY DISEASES. 



1. Where the inflammation is due to the action of pus-forming organisms. 



2. Where the inflammation is due to the action of the tubercle bacillus — 



i.e. 

 "Potts' Uiscat^e," "Angular Curvature," or "Caries of the Spine." 



A. Tuherodnr Deposits ivithout altered citrvatiire or loss of substance. 



7. 222. Tubercular Deposits in Several Vertebrae. — 



Ri-hi ill it of the spinal column, from the sixth dorsal vertebra 



