476 Diseases of Joints. 



7. 130. Tubercular (?) Disease of the First Metatarso- 



phalang'eal Joint. — Head of metatarsal bone and phalanges 

 of a great toe — macerated, illustrating the above. 



" From a rnan about 60 years of age. The disease originated about 

 twenty years ago in frost-bite. The toe was dislocated at the pi'oximal 

 phalanx, and turned inwards at a right angle. In amputating it tlie 

 metatarsal bone was cut across." 



The joint between the metatarsal bone and first phalanx is 

 partly absorbed and roughened by erosions. G. C. 1486. 



Presented by John Campbell, 17th April 1833. 



SHOULDER- JOINT. 

 Primarily and chiefly in the Synovial Membrane. 



7. 131. Tubercular Synovitis, involving- the Bone.— Bones 



forming a left shoulder joint — macerated, illustrating the above. 



"The effect of scrofulous inflammation." 



The articular surface of the humerus is bared of its smooth 

 plate of bone, and is rarefied and rough. The glenoid cavity is 

 l^artly affected in the same way, and the greater part of the 

 acromion process is deficient ; the remaining bone being greatly 

 opened out and in process of absorption. Some new bone has 

 been thrown out round the glenoid cavity and upon the spine. 



B. C. II. M. 48. 



ELBOW-JOINT. 

 a. Changes primarily or chiefly in the Synovial Membrane. 



7. 132. Tubercular Synovitis involving- the Articular 

 Surfaces. — Bones forming a right elbow-joint, soft parts re- 

 moved—in spirit, illustrating the above. 



The arm was amputated, and the patient did well. 

 The articular surface of the humerus is bared of cartilage 

 at some places, and at others the cartilage is undermined, and 

 hangs in loose flakes and tags. Similar changes are seen on the 

 head of the radius, and to a less extent upon the ulna, 



W. C. H. 38. 



