ANAT30007 Lecture Notes - Lecture 22: Network Layer, Adductor Hallucis Muscle, Navicular Bone
27 May 2018
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Department
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No opposition of the foot
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Abductor hallucis brevis: on outer end of big toe - abduction of big toe
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Flexor digitorum brevis: tendons split when inserting on middle phalanges (FDL passes
through)
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Abductor digiti minimi: on outer border of little toe - abduction of little toe
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All originate from plantar side of calcaneus
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AbHB, FDB –Medial Plantar N.
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AbDM –Lateral Plantar N.
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(Medial Plantar Nerve supplies
Abductor ‘hal’ ‘neath which it lies,
Flexor brevis, both ‘dig’ and ‘hal’;
And, last of all, first lumbrical)
NS:
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Sole: Layer 1. (beneath plantar aponeurosis)
Locomotor Page 7
Straightens the oblique pull of FDL
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NS: Lateral plantar N.
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Quadratus plantae (‘Flexor accessorius’)(FDL and FHL tendons): from calcaneus, inserts on
lateral border of FDL tendon
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Flex metatarsophalangeal joints and extend IP joints
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NS: Lumbrical 1 –Medial Plantar N., Lumbricals 2-4 –Lateral Plantar N.
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Lumbricals (4): originate from tendons of FDL, insert on extensor expansions
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Sole: Layer 2 (with FDL & FHL tendons from the posterior compartment)
Locomotor Page 8
Document Summary
Abductor hallucis brevis: on outer end of big toe - abduction of big toe. Flexor digitorum brevis: tendons split when inserting on middle phalanges (fdl passes through) Abductor digiti minimi: on outer border of little toe - abduction of little toe. Abdm lateral plantar n. (medial plantar nerve supplies. Sole: layer 2 (with fdl & fhl tendons from the posterior compartment) Quadratus plantae (cid:894)(cid:858)fle(cid:454)or a(cid:272)(cid:272)essorius(cid:859)(cid:895)(cid:894)fdl a(cid:374)d fhl te(cid:374)do(cid:374)s(cid:895): fro(cid:373) calcaneus, inserts on lateral border of fdl tendon. Lumbricals (4): originate from tendons of fdl, insert on extensor expansions. Ns: lumbrical 1 medial plantar n. , lumbricals 2-4 lateral plantar n. Flexor hallucis brevis: from cuboid+lateral cuneiform, inserts on both sides of base of proximal phalanx of hallux. Works with the fhl in flexing the big toe. Flexor digiti minimi: from base of 5th metatarsal to base of proximal phalanx of little toe.
