THE LIMB IN SECTION 



35 



between the perforans tendon behind and the superior sesamoidean or 

 great suspensory ligament in front, to become ultimately attached to 

 the perforans tendon, a short distance below the hock. The origin 

 of the suspensory ligament from the back of the lower row of tarsal 

 bones and the upper end of the large metatarsal is also plainly visible. 



Below the astragalus is the scaphoid, and immediately beneath 

 this is the cuneiform magnum. Both these bones are slightly 

 concave superiorly whilst their inferior surfaces are slightly convex. 

 They give attachment posteriorly to the tarso-metatarsal ligament 

 and in front to some fibres of the astragalo-metatarsal ligament, 

 which are seen in section, since they run obliquely across the front of 

 the joint. 



Closing in the front of the tibio-astragaloid joint is the anterior 

 common ligament, which is attached above to the front of the in- 

 ferior extremity of the tibia and below to the front of the upper 

 extremity of the large metatarsal bone. Lying on the anterior face 

 of this ligament are the tendons of the superficial and deep divisions of 

 the flexor metatarsi muscle. The tendon of the deep portion will be 

 noticed to pierce that of the superficial division, and both are observed 

 to run to their insertion into the roughened elevation at the front 

 of the upper extremity of the large metatarsal bone. The continua- 

 tion of the tendon of the extensor pedis will be observed, in front of 

 those of the flexor metatarsi, to pass beneath the two remaining annular 

 bands, which are seen in section, and to continue its course down 

 the front of the large metatarsal bone the upper end of which is 

 represented. 



A very important transverse section is represented in Plate XIX. 

 The section is taken across the right hind limb, and its importance is 

 enhanced inasmuch as it passes through the seats of the serious surgical 

 affections of spavin and curb. 



A transverse section of a tendon is shown posteriorly in the middle 

 line. This is the tendon of the flexor perforatus, and it is separated 



