Origin

Posterior surface of the body of the tibia

Insertion

Base of the distal phalanges of the four lesser toes

Action(s)

Primary action is Flex digits

Nerve Supply

Tibial nerve

Arterial Supply

Posterior tibial artery

Physical Exam

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Clinical Importance

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Disease States

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Discussion

Flexor accessorius longus digitorum, not infrequent, origin from fibula, or tibia, or the deep fascia and ending in a tendon which, after passing beneath the laciniate ligament, joins the tendon of the long flexor or the Quadratus plantæ.

Figures

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From Wikipedia:
Flexor digitorum longus

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