Foot/ankle/ LE cutaneous sensation
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41 Terms
what is the origin of the extensor digitorum brevis?
superolateral calcaneus
what is the insertion of the extensor digitorum brevis?
extensor tendon of longus, digits 2-4
what is the action of the extensor digitorm brevis?
extension of digits
what is innervated by the deep fibular nerve?
extensor digitorum brevis, extensor hallucis brevis
what is the origin of the extensor hallucis brevis?
dorsal aspect of proximal phalanx of digit 1
what is the action of extensor hallucis brevis?
extension of digit 1
what is the origin of abductor hallucis?
medial aspect of calcaneal tuberosity
what is the insertion of the abductor hallucis?
medial base of proximal phalanx digit 1
what is the action of abductor hallucis?
abducts digit 1
what 2 muscles are innervated by the medial plantar n.?
abductor hallucis, flexor digitorum brevis
what is the origin of the flexor digitorum brevis?
medial aspect of calcaneal tuberosity
what is the insertion of the flexor digitorum brevis?
both sides of middle phalanx on 2-5
what is the action of flexor digitorum brevis?
flex digits 2-5
what 2 muscles are innervated by the medial plantar n?
flexor digitorum brevis, flexor hallucis brevis
what is the origin of the abductor digiti minimi?
medial/lateral aspect of calcaneal tuberosity
what is the insertion of the abductor digiti minimi?
lateral base of proximal phalanx of digit 5
what is the action of the abductor digiti minimi?
digit 5 flexion, abduction
what is the origin of the quadratus plantae m?
medial/lateral surface of plantar calcaneus
what is the insertion of the quadratus plantae?
tendon of flexor digitorum longus
what action of the quadratus plantae?
flex digit 2-5 assisting flexor digitorum longus
what is the origin of the lumbrical mm.?
tendons of flexor digitorum longus
what is the insertion of the lumbrical mm?
medial aspect of extensor expansion of digits 2-5
what is the action of the lumbrical mm?
table top, extend DIP/PIP while MTP flexes
what is the innervation of the lumbrical mm?
1st: medial plantar, 2-4: lateral plantar
what is the origin of the flexor hallucis brevis?
cuboid, lateral cuneiforms
what is the insertion of the flexor hallucis brevis?
both sides of base of digit 1 proximal phalanx
what is the action of the flexor hallucis brevis?
digit 1 MTP flexion
what is the purpose of the seasmoid bones?
increase biomechanical efficiency of MTP flexion of digit 1
what muscle encapsulates the seasmoid bones?
medial/lateral heads of flexor hallucis brevis
what is the origin of the adductor hallucis?
TH: plantar l. of MTP, OH: base of metatarsals 2-4
what is the insertion of adductor hallucis
lateral base of digit 1 proximal phalanx
what is the action of adductor hallucis?
adduct digit 1
what is the origin of the flexor digiti minimi brevis?
base of 5th metatarsal on plantar surface
what is the insertion of the flexor digiti minimi brevis?
base of digit 5 proximal phalanx
what is the action of the flexor digiti minimi brevis?
flexion of digit 5 MTP
what is the origin of the plantar interossei?
medial sides of metatarsals 3-5
what is the insertion of the plantar interossei m?
medial base of digit 3-5 phalanges
what is the action of the plantar interossei?
adduct digit 3-5, flex MTP
what is the origin of the dorsal interossei?
adjacent side of metatarsal 1-5
what is the insertion for the dorsal interossei?
1: medial side of digit 2 proximal phalanx, 2-4: lateral sides of digits 2-4
what is the action of the dorsal interossei?
adducts digits 2-4, flex MTP