LOWER EXTREMITY. 271 



indicated by a line drawn from the tubercle, to be felt on 

 the side of the head of the tibia, to a point at the ankle, 

 midway between the malleoli. 



The pulsations of the posterior tibial artery may be felt 

 at a point midway between the posterior border of the 

 inner malleolus and the tendo Achillis. 



The tendon of the tibialis anticus lies upon the instep, and 

 is the innermost of all the tendons of the dorsum of the 

 foot. It may be felt between the ankle and the inner 

 border of the metatarsal bone of the great toe. This 

 tendon is often divided, subcutaneously, for the relief of 

 deformity. 



The tibialis posticus tendon may be reached behind the 

 inner malleolus, at a point midway between the anterior 

 and posterior border of the foot. This tendon is also often 

 divided, subcutaneously, for the relief of deformity. 



The dorsalis pedis artery follows a course indicated by 

 a line drawn from a point, midway between the malleoli, 

 to the base of the first interosseous space. - 



The prominence of the head of the first metatarsal bone 

 may be felt at the inner border of the foot. On its outer 

 border the projecting tubercle of the head of the fifth 

 metatarsal bone may also be felt and seen. These are im- 

 portant landmarks in the operation, called Lisfranc's, for 

 disarticulating the foot at its tarso-metatarsal articulation. 

 Posterior to the point at which the head of the first meta- 

 tarsal bone is found, may be felt the projecting tubercle of 

 the scaphoid bone; this is a landmark in disarticulating 

 the foot through the middle of the tarsus, in what is 

 known as Chopart's operation. 



