204 



Muscles of the Lower Extremity. 



I 



274, The Muscles on the 

 Plantar Side of the Foot. 



275. The Muscles on the 

 Plantar Side of the Foot 



The M u s c 1 e s on the Inner Border of the Foot: 



M. abductor hallucis (pollicis) arises from the tubercle and inner 

 surface of the Os calcis and from the Liy. laciniatum s. annulare internum, 

 and is inserted into the I. phalanx and inner sesamoid bone of the great toe. 



M. flexor brevis hallucis arises from the cuneiform bones and plantar 

 ligaments between the tarsus and metatarsus ; it is inserted by two portions 

 into the two sesamoid bones at the I. phalanx of the great toe. 



M. adductor hallucis arises by two heads (Fig. 276): a) from the 

 base of the II., III., IY. inetatarsal bones and from the fibrous sheath 

 of the tendon of the M. peromus longus ; b) from the lower capsular wall 

 of the Articulatio metatarso-plmlanyca IV., seldom V. ; they are inserted con- 

 jointly into the outer sesamoid bone. 



The Muscles at the Outer Border of the Foot: 



M. abductor digiti minimi arises from the under surface of the Os 

 calcis and the plantar fascia, and is inserted into the outer side of the 

 I. phalanx of the little toe. 



M. flexor brevis minimi diyiti arises from the calcaneo-cuboid liga- 

 ment and base of the V. metatarsal bone, and is inserted into the 

 lower capsular wall of the metatarso-phalangeal articulation of the little toe. 



