LAMENESS IN THE PHALANGEAL REGION. 67 



Palpation. — Pressure over the region of the sesamoid 

 bones is painful. After a time a swelliug of bony hardness 

 appears in that region ; it may also be at the side of the 



Fig. 10. 

 The flexor pedis perforans and perforatus tendons in a case of sesamoid 

 lameness ; at the point whei-e it passes over the sesamoid bones the 

 perforans tendon is fibrillated. (After Brauell). 



fetlock joint next to the metacarpal bone. Passive flexion 

 of the diseased joint quite often shows limited movement. 

 Later on, sometimes after years, the flexor tendons enlarge 

 at the sesamoids ; in such cases there is also permanent 

 volar flexion of the fetlock joint. Symmetrical swellings are 



