THE MUSCLES I05 



(90) Extensor digitorum longus (Fig. 50); lateral epicondyle 

 of femur with four tendons to dorsal aspect of digits; extensor 

 of phalanges. 



(91) Tibialis anterior (Fig. 50); lateral Surface of tibia, and 

 shaft and head of hbula to outer surface of first metatarsal; 

 flexor of foot. 



MUSCLES OF FOOT 



(92) Extensor brevis digitorum (Fig. 52); calcaneal ligament 

 and three metatarsals to proximal phalanges with tendon of 

 extensor longus. 



(93) Quadratus plantae (plantar head of flexor longus 

 digitorum); lateral surface of calcaneus and cuboid to outer 

 surface of flexor longus digitorum; holds flexor digitorum 

 tendon in place (Fig. 53). 



(94) Lubricales ; six muscles from flexor longus digitorum 

 to medial side of first phalanges of outer three digits; moves 

 these digits mediad (Fig. 53). 



(95) Interossei; the interosseus muscle of the second digit 

 has five parts, three of which act as abductors of the second 

 digit and are known as ahdilctor longus, brevis, and intermediur 

 digiti secundi, respectively; the fourth is an adductor, adductos 

 longus digiti secundi; and the fifth is the adductor medius 

 digiti secundi; the interossei of the third and fourth digits are 

 alike and divide into two parts forming middle and long abduc- 

 tors and abductors digiti tertii and quarti. 



There are five short muscles connected with the fifth digit: 



(Fig. 53)- 



(96) Abductor medius digiti quinti ; calcaneus and metatarsal 

 to first phalanx. 



(97) Adductor medius digiti quinti; cuboid to first phalanx. 



(98) Opponens digiti quinti; ligament of peroneal canal to 

 fifth metatarsal. 



(99) Abductor digiti quinti brevis; ligament of peroneal canal 

 to lateral sesamoid. 



(100) Adductor digiti quinti longus; lig. of peroneal canal 

 to tendon of extensor. 



