LAMENESS IN THE HIND LEG ?31 



the calcaneum was protruding through the perforated skin. The 

 animal was destroyed and the bone was found l)roken in three 

 pieees. 



Sinee the support for the tendo Achillis is removed in such 



1 



Tuber calcis 



Lateral malleolus 



Short liitiral ligament E_ jp \ 



/ 



1 



/ Short meiiial ligavjeittn 



''rochlea of tibial tarsal 

 bone 



T.f.— . ^- 

 T.4 - 



T t. 



Dorsal lii/ament 



Mt. IV , _ - - r. .3 



. Mt. Ill 



Fig. 54 — Right hock joint. Viewed from the front and slightly laterally 

 after removal of joint capsule and long collateral ligaments. T. t., Tibial 

 tarsal bone (distal tuberosity). T. c, central tarsal bone. T. 3. Ridge of 

 third tarsal bone. T. f. Fibular tarsal bone (distal end). T. 4. Fourth tarsal 

 bone. Mt. Ill, Mt. IV. Metatarsal bones. Arrow points to vascular canal. 

 (From Sisson's "Anatomy of the Domestic Animals.") 



fracture and no leverage on the metatarsus obtains, it naturally 

 follows that any attempt to sustain weight must result in extreme 

 flexion of the hock and descent of this part in a manner similar 

 to cases of rupture or division of the Achilles' tendon. The two 

 conditions should not be confused, however, as the parts may be 



