18 



DISEASES OF THE HORSE'S FOOT 



Action. — The action of this muscle is to extend the third 

 phalanx on the second, the second on the first, and the first 

 on the metacarpus. It also assists in the extension of the 

 foot on the forearm. 



Fig. 10.— The Flexor Tendons and Extensor Pedis. 

 (After Haubner.) 



I, Tendon of flexor perforans; 2, its supporting check-band from the 

 posterior ligament of the carpus ; 3, tendon of the flexor per- 

 forates ; 4, ring and sheath of the flexor perf oratus ; 5, widen- 

 ing_ out the the flexor perf oratus to form the plantar aponeu- 

 rosis ; 6, suspensory ligament; 7, reinforcing band from the 

 suspensory ligament to the extensor pedis ; 8, the extensor pedis. 



The Flexor Pedis Perforatus, or the Superficial 

 Flexor of the Phalanges. — In common with the perfo- 

 rans, this muscle arises from the inner condyloid ridge of 

 the humerus. It is reinforced at the lower end of the radius 



