LAMENESS IN THE REGION OF THE KNEE. 55 



the inner small metacarpal bone. When distended, it forms 

 a round, oblique swelling, running as described, being 

 subdivided by the extensor tendons. 



9. Above the fetlock, on the anterior face of the metacarpal 

 bone, is a mucous bursa for the extensor pedis tendon, its 

 upper wall resting against that tendon. "When distended, it 

 may become as large and even larger than a goose's egg. 



