Tubercular Synovitis of Ellow-joint. . 477 



7. 133. Tubercular Synovitis involving: the Articular 



Surface.— Upper end of a right ulna— macerated, illustrating 



the above. 



The cartilaginous surfaces of the greater and lesser sigmoid 

 cavities have been for the most part rarefied, leaving only a 

 narrow margin of cartilage round the top of the greater sigmoid 

 cavity. F. P. C. 369. 



7. 134. Tubercular Synovitis, involving- the Articular 



Surface.— Upper end of a left ulna— macerated, illustrating 



the above. 



There is rarefaction of the articular surfaces, especially of 

 the lesser sigmoid cavity. New bone has been thrown out below 

 the joint. G. C. 1149. 



Presented by Professor James Russell. 



7. 135. Tubercular Synovitis involving- the Articular 



Surface. — Portions of a left elbow-joint removed by excision 

 — macerated, illustrating the above. 



When fresh, the articular surfaces were in many parts 

 covered with pulpy gelatinous material. At other places, soft 

 gelatinous material (granulation tissue) had spread between the 

 bone and the cartilage, and was absorbing it from below. The 

 cartilage, however, was not loose, as it still adhered to the 

 gelatinous material. On the articular surface of the humerus, 

 two hard white nodules of bone stood out from the surrounding 

 granulations. At the outer side there was a cavity entirely 

 filled with gray gelatinous material, becoming caseous at various 

 points. The articular surface of the ulna presented a similar 

 appearance. 



The articular surfaces are rarefied, and show the deep 

 holes which were filled with the gelatinous granulation 

 material. 



