Term
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Definition
O: medial head – posterior surface of medial femoral condyle
lateral head – posterior surface of lateral femoral condyle
I: posterior surface of calcaneus (Achilles tendon)
A: ankle plantarflexion; knee flexion
I: tibial nerve (S1, S2) |
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Term
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Definition
O: lateral supracondylar ridge of femur and oblique popliteal ligament
I: posterior surface of calcaneus; may be part of Achilles tendon or separate
A: ankle plantarflexion
I: tibial nerve (L4-S1) |
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Term
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Definition
O: posterior surface of proximal fibula and proximal 2/3 of posterior tibial surface
I: posterior surface of calcaneus (Achilles tendon)
A: ankle plantarflexion
I: tibial nerve (S1, S2) |
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Term
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Definition
O: posterior surface of upper half of interosseous membrane and adjacent surfaces of tibia and fibula
I: navicular tuberosity, sustentaculum tali, cuneiforms, cuboid, base of 2-4 MT
A: ankle plantarflexion and inversion
I: tibial nerve (L5, S1) |
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Term
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Definition
O: middle 1/3 of posterior surface of tibia
I: base of distal phalanx of toes 2-5
A: flexion of toes 2-5 at MTP, PIP, and DIP jts.; ankle inversion and plantarflexion
I: tibial nerve (L5-S1) |
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Term
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Definition
O: tuberosity of calcaneus; plantar aponeurosis
I: medial and lateral aspects of 2-5 middle phalanxes
A: MP and PIP flexion of 2-5 phalanges
I: medial plantar nerve (L4, L5) |
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Term
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Definition
O: middle 2/3 of posterior surface of fibula
I: base of distal phalanx of great toe, plantar surface
A: flexion of great toe at MTP and IP jts.; ankle inversion and plantarflexion
I: tibial nerve (L5-S2) |
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Term
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Definition
O: cuboid; 3rd cuneiform
I: medial head – medial aspect of 1st proximal phalanx
lateral head – lateral aspect of 1st proximal phalanx
A: MP flexion of 1st phalange
I: medial plantar nerve (L4-S1) |
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Term
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Definition
O: head and upper 2/3 of lateral surface of fibula
I: undersurfaces of 1st cuneiform and 1st MT
A: ankle eversion and plantarflexion
I: superficial peroneal nerve (L4-S1) |
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Term
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Definition
O: lower 2/3 of lateral surface of fibula
I: tuberosity of 5th MT
A: ankle eversion and plantarflexion
I: superficial peroneal nerve (L4-S1) |
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Term
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Definition
O: distal 1/3 of anterior fibula
I: base of 5th MT
A: ankle eversion and dorsiflexion
I: deep peroneal nerve (L4-S1) |
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Term
| Extensor Digitorum Longus |
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Definition
O: lateral condyle of tibia, head of fibula, upper 2/3 of anterior surface of fibula
I: anterior surface of middle and distal phalanges 2-5
A: extension of phalanges 2-5 at MTP, PIP, and DIP jts.; ankle dorsiflexion and eversion
I: deep peroneal nerve (L4-S1) |
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Term
| Extensor Digitorum Brevis |
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Definition
O: anterolateral calcaneus, lateral talocalcaneal ligament, inferior extensor retinaculum
I: base of proximal phalanx of 1st phalange, lateral sides of extensor digitorum longus tendons of 2-4 phalanges
A: assists in MP extension of 1st phalanx and extension of middle three phalanges
I: deep peroneal nerve (L5, S1) |
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Term
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Definition
O: middle 2/3 of medial surface of anterior fibula
I: base of distal phalanx of great toe
A: extension of great toe at MTP and IP jts.; ankle dorsiflexion; assists with ankle inversion
I: deep peroneal nerve (L4-S1) |
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Term
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Definition
O: upper 2/3 of lateral surface of tibia
I: inner surface of medial cuneiform and base of 1st MT
A: ankle dorsiflexion and inversion
I: deep peroneal nerve (L4-S1) |
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Term
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Definition
O: tuberosity of calcaneus; plantar aponeurosis
I: lateral aspect of 5th proximal phalanx
A: MP abduction of 5th phalange
I: lateral plantar nerve (S1, S2) |
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Term
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Definition
O: tuberosity of calcaneus; flexor retinaculum; plantar aponeurosis
I: medial aspect of base of 1st proximal phalanx
A: MP flexion; abduction of 1st phalanx; assists with forefoot adduction
I: medial plantar nerve (L4, L5) |
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Term
| Flexor Digiti Minimi Brevis |
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Definition
O: base of 5th metatarsal; sheath of peroneus longus tendon
I: lateral aspect of base of 5th proximal phalanx
A: MP flexion of 5th phalange
I: lateral plantar nerve (S2, S3) |
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Term
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Definition
O: medial head – medial surface of calcaneus
lateral head – lateral border of inferior surface of calcaneus
I: lateral margin of flexor digitorum longus tendon
A: DIP flexion of 2-5 phalanges
I: lateral plantar nerve (S2, S2) |
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Term
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Definition
O: tendons of flexor digitorum longus
I: dorsal surface of 2-5 proximal phalanxes
A: MP flexion of 2-5 phalanges
I: 1st lumbricale – medial plantar nerve (L4, L5)
2nd – 4th lumbricales – lateral plantar nerve (S1, S2) |
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Term
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Definition
O: oblique head – 2-4 MT and sheath of peroneus longus tendon
transverse head – plantar MTP ligaments of 3-5 phalanges and transverse metatarsal ligaments
I: lateral aspect of base of 1st proximal phalanx
A: MP adduction of 1st phalange
I: lateral plantar nerve (S1, S2) |
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Term
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Definition
O: bases and medial shafts of 3-5 MT
I: medial aspects of bases of 3-5 proximal phalanxes
A: MP adduction and flexion of 3-5 phalanges
I: lateral plantar nerves (S1, S2) |
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Term
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Definition
O: two heads on shafts of adjacent metatarsals
I: 1st interossei – medial aspect of 2nd proximal phalanx
2nd – 4th interossei – lateral aspect of 2nd – 4th proximal phalanxes
A: MP abduction and flexion of 2nd – 4th phalanges
I: lateral plantar nerve (S1, S2) |
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