PLATE VI. 



ULCERATIVE DISEASE OF THE SHOULDER JOINT, 

 THE RESULT OF INJURY. 



Plate VI. This Plate represents the lower extremity of the os humeri of Mr. A.'s 

 horse, whose case is given at pages 52-4. It will be observed, that the outer 

 articulatory prominence (a, a,) has its border and sides covered with pale 

 granulations, sprouting from the surfaces which sustained the injury, and which 

 thereby had become splintered; fragments of bone having been found, post 

 mortem, among the contiguous soft parts. The broad trochleated articulatory 

 surfaces of the bone (b, h), exposed to view, present here and there patches of 

 redness, especially remarkable upon the tumid border of the articular groove 

 running between them. Occupying the middle portion, however, of the groove 

 itself, extending along it to the length of an inch and a half, and the breadth 

 of half an inch, is an irregular patch of ulceration, which has penetrated the 

 substance of the cartilage, down to that of the bone ; from which latter is 

 seen, springing up, a crop of pale granulations. This circumstance, viz. its 

 granulative condition, denotes the recent character of the ulceration : in other 

 respects, the ulceration has all the character of that which is the accompaniment 

 of acute articular spavin, &c. 



