Lecture 13: Deep Posterior Leg and Sole of Foot Flashcards
sustentaculum tali
medial shelf supporting talus; inferior groove for flexor hallucis longus tendon
flexor retinaculum prevents _______________ of deep flexors
bowstringing
tibialis posterior innervation
tibial n.
tibialis posterior actions
inversion and plantar flexion
flexor digitorum longus innervation
tibial n.
flexor digitorum longus actions
flexes toes; plantar flexion
flexor hallucis longus innervation
tibial n.
flexor hallucis longus actions
flexion of great toe; important in “pushing off”
abductor hallucis innervation
medial plantar n.
abductor hallucis actions
abduction and assistance in flexion of great toe; maintenance of medial longitudinal arch
flexor digitorum brevis innervation
medial plantar n.
flexor digitorum brevis actions
flexion of digits 2-4 (or 5); maintenance of longitudinal arches
abductor digiti minimi innervation
lateral plantar n.
abductor digiti minimi actions
abduction and flexion of 5th toe; maintenance of longitudinal arch
quadratus plantae innervation
lateral plantar n.
quadratus plantae actions
adjustment of pull by flexor digitorum longus tendons to conform more closely to axes of toes
lumbrical mm. innervations
1- medial plantar n.
#2-4 - lateral plantar n.
lumbrical mm. actions
extension of PIP and DIP joints and flexion of MTP joints of digits 2-5
flexor hallicus brevis innervation
medial plantar n.
flexor hallicus brevis actions
flexion of great toe
adductor hallicus innervation
lateral plantar n.
adductor hallicus actions
adduction and assistance of great toe; maintenance of transvers plantar arch
flexor digiti minimi brevis innervation
lateral plantar n.
flexor digiti minimi brevis actions
flexion of digit 5