WEEK 8/2 > FOOT REGION Flashcards
BONES OF THE FOOT
- tarsal bones
- metatarsal bones
- phalanges
- sesamoid bones
TARSAL BONES
- 7 BONES located proximally in the foot
what does the tarsal bone form
part of the arch system
what does the tarsal bone form
- ankle joint
- intertarsal joints
- tarsometarsal joint
METATARSAL BONES
- 5 BONES
What does the metatarsal bone form
tarsometatarsal and tarsometatarsophalangeal joint
PHALANGES
14 PHALANGES
what does the phalanges form
metatarsalphalangeal and interphalangeal joints
are the phalanges part of the arch system
no
SESAMOID BONES
help transfer force
JOINTS OF THE FOOT
intertarsal
tarsometatarsal
metatarsophalangeal
interphalangeal
INTERTARSAL
- synovial
subtalar, talonavicular and calcaneocuboidal combine to form compound joint which allow inversion and eversion of the foot
ligaments of the intertarsal
- short dorsal (tarsal) and ventral (plantar tarsal) ligaments and dorsally the bifurcate ligaments
ventrally > plantar calcenovaciular
TARSOMETATARSAL
synovial sliding, little moving
METATARSOPHALANGEA
Synovial hinge, flexion and extension
INTERPHALANGEAL
synovial hinge, flexion and extension b
EXTRINSIC FOOT MUSCLES
ECM enter the foot and attach to the tarsal and metatarsal bones (tibialis anterior/posterior, peroneus longus and brevis, gastrocnemius and soleus)
- toes > extensor/flexor hallucis longus, extensor/flexor digitorum longus
INTRINSIC FOOT MUSCLES
- ventral layer > helps move the toes, protect and supply structures, support the arch system
dorsal layer of the foot
- innervated by the deep peroneal nerve
ventral group innervated by
- innervated by the medial and lateral plantar nerves > branches of the tibial nerve
CONNECTIVE TISSUE STRUCTURES
plantar aponeurosis
- superficial ventral region (location)
