. Cunningham's Text-book of anatomy. Anatomy. THE MUSCLES IX THE SOLE OF THE FOOT. 433 along with part of the flexor hallucis brevis, into the medial side of the base of the first phalanx of the great toe. Nerve-Supply.—Medial plantar nerve (L. 4. 5. S. 1.). Actions.—A flexor and abductor of the great toe. M. Flexor Digitorum Brevis.—The flexor digitorum brevis has likewise a double origin: (1) from the an- terior part of the medial process of the tuberosity of the calcaneus (Fig. 386, p. 432), and (2) from the thick central part of the plantar aponeurosis which covers it, and from the intermu
. Cunningham's Text-book of anatomy. Anatomy. THE MUSCLES IX THE SOLE OF THE FOOT. 433 along with part of the flexor hallucis brevis, into the medial side of the base of the first phalanx of the great toe. Nerve-Supply.—Medial plantar nerve (L. 4. 5. S. 1.). Actions.—A flexor and abductor of the great toe. M. Flexor Digitorum Brevis.—The flexor digitorum brevis has likewise a double origin: (1) from the an- terior part of the medial process of the tuberosity of the calcaneus (Fig. 386, p. 432), and (2) from the thick central part of the plantar aponeurosis which covers it, and from the intermuscular septa on either side. Passing forwards, it gives rise to four slender tendons, which are inserted into the second phalanges of the four lateral toes, after having been perforated by the long flexor tendons, just as in the case of the tendons of the flexor digitorum sublimis of the hand (p. 389). Nerve - Supply. — Medial plantar nerve (L. 4. 5. S. 1.). Actions.—The muscle is a flexor of the toes, acting on the metatarso- phalangeal and first inter-phalangeal articulations of the four lateral toes. M. Abductor Digiti Quinti. —The abductor digiti quinti also has a double origin: (1) by fleshy and tendinous fibres from the anterior part of both pro- cesses of the tuberosity of the calcaneus, partly concealed by the flexor digitorum brevis (Fig. 386, p. 432), and (2) by fleshy fibres from the lateral portion of the plantar aponeurosis and the cal- caneo-metatarsal ligament, and from the intermuscular septum between it and the flexor digi- torum brevis. Its tendon lies along the fifth metatarsal bone, and is inserted into the lateral side of the pos- terior end of the first phalanx of the little toe. The most lateral fibres usually obtain an ad- ditional insertion into the lateral side of the plantar surface of the fifth metatarsal bone. Plantar aponeurosis Abductor digiti quinti QUADRATUS ; PLANTS Flexor digitorum brevis Abductor hallucis Flexor digiti quinti brev
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1914
