Foot and Ankle Flashcards
how many bones in the foot
26
plantar fascia structure
web like ligamentous
attached to calcaneus metatarsals, phalanges and skin
function of plantar fascia
support base of foot including both arches
2 arches of foot
longitudinal
transverse
longitudinal arch
from calcaneus, talus, navicular, cuneiforms, metatarsal
can be high, medium or low
transverse arch
extends across the foot from 1st to 5th metatarsal
function of foot
load bearing
shock absorb
locomotion
lever for propulsion
what’s per planus
flat feet / low arches
soft foot type, good shock absorb, less propulsion, excessive eversion
what’s per cavus
high arches, rigid foot, poor shock absorb, good propulsion
plantar fasciitis
inflammation of plantar fascia (heel pain) over use injury
ankle joint name
talocrural joint
ankle joint basics
mortise joint (square accepting another square)
hinge
uniaxial
plantar flexion degrees
40-50
dorsiflexion degrees
15-20
joints in ankle
subtalar joint
transverse tarsal joint
transverse tarsal joint and subtler joint function
gliding joints
inversion 25 degrees and eversion 15 degrees causing probation and supination
joints in foot
tarsometatarsal joint
metatarsophalangeal joint
interphalangeal joint
4 compartments of lower leg
superficial posterior
deep posterior
anterior
lateral
superficial posterior compartment muscles
gastrocnemius (has a medial and lateral head intrusion on calcaneus)
soleus (inserts at calcaneus but at an angle)
deep posterior compartment muscles
tibialis posterior (assists plantar flexion and inversion)
flexor digitorm longus
flexor hallucis longus
flexor digitorum longus
along muscle that flexes digits
flexor hallucis longus
long muscle flexing big toes
anterior compartment muscles
tibialis anterior (upper 2/3 of lateral surface of tibia)
extensor hallucis longus (extend toes)
extensor digitorum longus (eversion)
lateral compartment muscles
peroneus longus
peroneus brevis
peroneus Tertius
all eversion
Achilles tendon rupture symptoms
sudden onset of sharp pain in heel
snapping sound
difficult walking
Achilles tendon rupture causes
sudden dorsiflexion when muscle in tension
sudden heavy activation after prolonged periods of inactivity
shin splints
small tears / inflammation of muscles attaching to tibia
ankle sprain causes
90% inversion
chances of reoccurring sprain
50%