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Anatomy
Lower Limbs Region 5
| Term | Definition |
|---|---|
| abductor hallucis origin | medical tubercle of tuberosity of calcaneus; flexor retinaculum; plantar aponeuorsis |
| abductor hallucis insertion | medial aspect of base of proximal phalanx of 1st digit(hallux) |
| abductor hallucis action | abducts & flexes 1st digit (hallux) |
| abductor hallucis innervation | medial plantar nerve |
| abductor hallucis artery | medial plantar artery |
| abductor hallucis | 1st layer of plantar foot muscle; |
| flexor digitorum origin | medial tubercle of tuberosity of calcaneus; plantar aponeurosis; intermuscular septa |
| flexor digitorum brevisjinsertion | both sides of middle phalanges of lateral 4 digits |
| flexor digitorum brevis action | flexes lateral 4 digits |
| flexor digitorum brevis innervation | medial plantar nerve |
| flexor digitorum brevis artery | medial planter artery |
| flexor digitorum brevis | 1st layer of plantar foot muscle; medial orientation |
| abductor digiti minimi | 1st layer of plantar foot muscle; lateral orientation |
| abductor digti minimi origin | medial & lateral tubercles of tuberosity of calcaneus; plantar aponeurosis; intermuscular septa |
| abductor digti minimi insertion | lateral side of base of proximal phalanx of 5th digit |
| abductor digti minimi innervation | lateral plantar nerve |
| abductor digti minimi artery | lateral plantar artery |
| abductor digti minimi action | abducts and flexes little toes(5th digit) |
| quadratus plantae | 2nd layer of plantar foot muscle; |
| quadratus plantae origin | medial surface and lateral margin of plantar surface of calcaneus |
| quadratus plantae insertion | posterolateral margin of tendon of flexor digitorum longus |
| quadratus plantae action | assists flexor digitorum longus in flexing lateral four digits |
| quadratus plantae innervation | lateral plantar nerve |
| quadratus plantae artery | lateral plantar artery |
| lumbricals | 2nd layer of plantar foot muscle; digits 2-5 |
| lumbricals origin | tendons of flexor digitorum longus |
| lumbricals insertion | medial aspect of expansion over lateral 4 digits |
| lumbricals action | flex proximal phalanges, extend middle & distal phalanges of lateral 4 digits |
| lumbricals innervation | 2nd digit: medial plantar nerve; digits 3-5: lateral plantar nerve |
| lumbricals artery | medial & lateral plantar nerve arteries |
| flexor hallucis brevis | 3rd layer of plantar foot muscle |
| flexor hallucis brevis origin | plantar surfaces of cuboid & lateral cuneiforms |
| flexor hallucis brevis insertion | both sides of base of proximal phalanx of 1st digit |
| flexor hallucis brevis action | flexes proximal phalanx of 1st digit |
| flexor hallucis brevis innervation | medial plantar nerve |
| flexor hallucis brevis artery | medial plantar artery |
| adductor hallucis | 3rd layer of plantar foot muscle |
| adductor hallucis origin | oblique head: bases of metatarsals 2-4 transverse head: plantar ligaments of metatarsal phalangeal joints |
| adductor hallucis insertion | tendons of both heads attach to lateral side of base of proximal phalanx of 1st digit |
| adductor hallucis action | adducts 1st digit assists in transverse arch of foot by metatarsals medially |
| adductor hallucis innervation | deep branch of lateral plantar nerve |
| adductor hallucis artery | lateral plantar artery |
| flexor digiti minimi brevis | 3rd layer of plantar foot muscle |
| flexor digiti minimi brevis origin | base of 5th metatarsal |
| flexor digiti minimi brevis insertion | base of proximal phalanx of 5th digit |
| flexor digiti minimi brevis action | flexes proximal phalanx of 5th digit, assisting with flexion |
| flexor digiti minimi brevis innervation | supericial branch of lateral plantar nerve |
| flexor digiti minimi brevis artery | lateral plantar artery |
| plantar interossei | 4th layer foot muscles; 3 total |
| plantar interossei origin | plantar aspect of medial sides of shafts of metatarsals 3-5 |
| plantar interossei insertion | medial sides of bases of phalanges of 3rd-5th |
| plantar interossei action | adduct digits 3-5 & flex metatarsal phalangeal joints |
| plantar interossei innervation | lateral plantar nerve |
| plantar interossei artery | lateral plantar artery |
| dorsal interossei | 4th layer foot muscles; 4 total |
| dorsal interossei origin | adjacent sides of shafts of metatarsals 1-5 |
| dosal interossei insertion | 1st= medial side of proximal phalanx of 2nd digit |
| dorsal interossei action | 2nd-4th = lateral sides of 2nd-4th digits |
| dorsal interossei innervation | lateral plantar nerve |
| dorsal interossei artery | lateral plantar artery |
| plantar aponeurosis | |
| plantar aponeurosis compartments (medial, lateral, central | |
| plantar aponeurosis adductor inerosseous | |
| medial plantar nerve origin | |
| medial plantar nerve distribution | |
| lateral plantar nerve origin | |
| lateral plantar nerve distribution | |
| saphenous nerve origin | |
| saphenous nerve distribution | |
| medial calcaneal nerve origin | |
| medial calcaneal nerve distribution |