210 



DISSECTION OF THE FOOT. 



muscular 

 and 



anterior 

 perforating 

 offsets ; 



first, 



second, 

 third, 



fourth 

 digital ; 



junction 

 with inner 

 plantar ; 

 distribution 

 on the toes. 



Ending of 

 the dorsal 

 artery of 

 the foot ; 



its digital 

 branches, 



on the 

 digits. 



External 

 plantar 

 nerve ends 

 in the deep 

 muscles : 



like ulnar 

 nerve. 



Dissection. 



Transverse 

 uietatarsal 

 ligament. 



contiguous sides of two toes. They give fine offsets to the intLT<i>si'i. 

 to some lumbricales, and the adductor traiisversus ; and at the pointi 

 of division they send small communicating branches anterioi 

 perforating, to join the interosseous arteries on the dorsum of the 

 foot (p. 184). 



The first digital runs on the outer side of the little toe, supply in<. 

 the flexor brevis minimi digiti, and distributes small arteries to the 

 integuments of the outer border of the foot. 



The second belongs to the sides of the fifth and fourth toe*, and 

 furnishes a branch to the outer lumbrical muscle. 



The third is distributed to the contiguous sides of the fourth and ; 

 third toes, and emits a branch to the third lumbricalis. 



The fourth, or most internal, corresponds with the second inter- 

 osseous space, and ends like the others on the third and second 

 digits ; it may assist in supplying the third lumbricalis. 



The last two are joined by superficial digital branches of the 

 internal plantar at the root of the toes. 



On the sides of the toes the disposition of the arteries is like that 

 of the digital in the hand (p. 72). They extend to the end, 

 where they unite in an arch, and give offsets to the sides and ball 

 of the toe ; and the artery on the second digit anastomoses at the* 

 end of the toe with a branch from the dorsal artery of the foot. 

 Near the front of the first and second phalanges they form ana'sto- 

 motic loops beneath the flexor tendons, from which the phalangeal 

 articulations are supplied. 



The DORSAL ARTERY OP THE FOOT (fig. 79, e) enters the sole at 

 the posterior part of the first (inner) metatarsal space, and ends by 

 inosculating with the plantar arch. By a large digital artery it 

 furnishes branches to both sides of the great toe and half the next, 

 in the same manner as the radial artery in the hand is distributed 

 to one digit and a half (p. 80). 



The digital branch (/) extends to the front of the first inter- 

 osseous space, and divides into collateral branches (h) for the 

 contiguous sides of the great toe and the next. Near the heac 

 of the metatarsal bone it sends inwards, beneath the flexor 

 muscles, a digital branch (g) for the inner side of the great toe. 



The arteries have the same arrangement along the toes as the 

 other digital branches ; and that to the second digit anastomoses at 

 the end with a branch of the plantar arch. 



The DEEP PART OF THE EXTERNAL PLANTAR NERVE (fig. 79, 4 ) 



accompanies the arch of the artery, and ends internally in the 

 adductor obliquus hallucis. It furnishes branches to all the 

 iiiterossei, to the traiisversus adductor, and to the outer three 

 lumbrical muscles (Brooks). This nerve corresponds with the 

 deep portion of the ulnar nerve in the hand. 



Dissection. It will be needful to remove the transverse 

 adductor muscle to see a ligament across the heads of the 

 metatarsal bones. 



The TRANSVERSE METATARSAL LIGAMENT is a strong fibrous band, 

 like that in the hand (p. 81), which connects together all the 



