arches and motions

Question 1

Keystone of transverse arch

Answer 1

Intermediate cuneiform

Question 2

medial longitudinal arch keystone

Answer 2

talonavicular joint

Question 3

windlass mechanism

Answer 3

extension of the toes stretches the central fibers of the deep fascia, and it adds tension to the medial longitudinal arch

Arch increases in size or height with extension of the toes

Increases stability foot during toe extension that heal off and push off during gait

Question 4

pes planus

Answer 4

flat feet
excessively mobile

Lack static support

Lack stability and cant maintain a supinated foot
Don’t have the rigid push you need for efficient running

possible symptoms-
tibial ir, increased q angle, patellar symptoms, stressed ligaments
heel pain, ant knee pain, fx 2-3 metatarsals

Question 5

pes cavus

Answer 5

high arches

supinated subtalar and transverse tarsal

Rigid foot

Question 6

Supination of foot CKC

Answer 6

Talus is abducted and dorsiflexed

calcaneus is inverted

navicular is raised with talar head

lisfranc- pronated to keep big toe on ground

arch is high

Question 7

pronation of foot CKC

Answer 7

talus- adducted and plantarflexed

calcaneus- everted

navicular- lowered with talar head

lisfranc- supinates to accomodate lower midfoot

arch is low

Question 8

OKC supination of foot

Answer 8

calc- iv
talar- add/ pf

Question 9

OKC pronation of foot

Answer 9

calc- ev

talar- abd / df