Anatomy of the lower limb - muscles of the foot Flashcards
groups of mm of the foot
extrinsic - arises from ant, post, lat compartments of legs - inversion/ eversion/ plantarflexion/ dorsiflexion
intrinsic
intrinsic mm - location and the mm/ nn
dorsum - EDB, EHB - deep fibular nerve, extension
plantar - 4 layers - tibial nerve - stabilise foot, move toes
EDB
- origin
- insertion
- nn
- action
origin - calcaneus and inf extensor retinaculum
insert - long extensor tendon of medial 4 toes
nn - deep fib
action - extends lat four toes
EHB
- origin
- insertion
- nn
- action
- origin - calcaneus and inf ext retinaculum
- insertion - base of prox phalanx of great toe
- nn - deep fib
- action - extends great toe
mm in each later of plantar aspect of footq
1st - ABD H, FDB, ADM
2ND - QP, L
3RD - FHB, ADD H, FDMB
4TH - PI, DI
abductor hallucis
- origin
- insertion
- nn
- action
origin - medial tubercle of the calcaneus, flexor retinaculum , plantar aponeurosis
insert - medial base of prox phalanx of great toe
actiob - abduct and flex great toe
innerve - medial plantar nerve
flexor digitorium brevis
- origin
- insertion
- nn
- action
- origin medial tubercle of calcaneus, plantar aponeurosis
- insertion - middle phalanges of lat 4 digits
- nn - medial plantar nerve
- action - flex lat four toes
abductor digiti minimi
- origin - med and lat tubercles of calcaneus and plantar aponeurosis
- insertion - lat base of prox phalanx 5th digit
- nn - lat plantar nerve
- action - abduct and flex little toe
quadratus plantae
- origin
- insertion
- nn
- action
o - med and lat plantar surface of calcaneus
i - tendons of FDL
i - lat plantar nerve
a - flex lat 4 toes
lumbricals
- origin
- insertion
- nn
- action
o - FDL tendons
flexor halluci brevis
- origin
- insertion
- nn
- action
adductor hallucis
- origin
- insertion
- nn
- action
flexor digiti minimi brevis
- origin
- insertion
- nn
- action
plantar interossei
- origin
- insertion
- nn
- action
doral interossei
- origin
- insertion
- nn
- action
