20 DISEASES OF THE HORSE’S FOOT 
Fie. 12.—Tue Fiexor Perroratus AnD FLEXOR PERFORANS TENDONS. 
The. metacarpo-phalangeal sheath and the ring of the perforatus laid 
open posteriorly, and the cut edges reflected; the flexor perforans 
cut through at about the region of the sesamoids, and its inferior 
portion deflected. 
1, Superior end of severed perforans tendon ; 2, inferior end of severed perforans 
tendon ; 3, insertion of flexor perforans into semilunar crest of os pedis ; 
4, the cut and reflected edges of the metacarpo-phalangeal sheath and 
perforatus ring; 5, the bifid insertion of the flexor perforatus into the 
lateral surfaces of the os corone ; 6, the capsular ligament of the pedal 
joint ; 7, the navicular bone; 8, the posterior surface and glenoid fibro- 
cartilage of the os coron. 
