504 Diseases of Joints. 



upwards from its articulation with the bones of the forearm, 

 so as to display the articular surfaces. The lower end of the 

 humerus is so greatly atrophied that its original shape is not 

 recognisable. The whole of the outer condyle, with some of 

 the bone above it, is now wanting. Large adimentary bones 

 have formed in the synovial membrane. There is a large one 

 above the olecranon process, another at the inner condyle of 

 the humerus, and other smaller ones are scattered round the 

 joint. The articular surfaces of the joint show smooth exposed 

 bone at some places. At others they are covered with a shreddy, 

 fibrous material, but nowhere with cartilage. The synovial mem- 

 brane, where it has been left, shows numerous processes 

 — some pendulous and thick, and others fine and shreddy. 



This specimen was formerly described as one of fracture 

 and dislocation, involving the elbow-joint, not, however, from a 

 history of the case, but from an interpretation of the appear- 

 ances. The view now taken, however, seems the more correct 

 one, as the specimen quite corresponds with an extreme degree 

 of the changes seen in other examples of arthritis deformans. 



G. C. 784. 

 Presented hy Drs Watsox and Cullen, 



7. 194. Much Advanced Arthritis Deformans.— Plaster of 



Paris cast of a right elbow and forearm, showing great 

 deformity of the elbow. 



The bones of the forearm have been drawn up on the out- 

 side, past the lower end of the humerus. Although there is no 

 history to that effect, this might have been a cast of the 

 previous elbow-joint before dissection. It was entered as a cast 

 of a dislocation. F. P. C. 702. 



7, 195. Advanced Arthritis Deformans of the Elbow, with 

 an Ununited Fracture of the Upper End of the 



