lecture 20 foot

Question 1

with which bones does the talus articulate?

Answer 1

talus, calcaneous (three articular surfaces)

Question 2

true or false, talus is wider anterior and laterally

Answer 2

true

Question 3

the posterior projection of calcaneous allows for an increase inthe lever arm of the _____

Answer 3

plantarflexors

Question 4

what are the medial articulations of cuboid?

Answer 4

navicular and lateral cuneiform

Question 5

what forms the groove for the peroneous longus tendon on the plantar surfuace of foot?

Answer 5

tuberosity of cuboid

Question 6

in what tendon are the sesamoid bones of the foot located?

Answer 6

fhb

Question 7

which direction does the tibia rotate during dorsiflexion?

Answer 7

external rotation

Question 8

what is the role of the deltoid ligament?

Answer 8

resist excess eversion

Question 9

what noncontractile structure provieds passive stability at the lateral talocrural joing?

Answer 9

LCL

Question 10

what is the most commonly injured tcj ligament and how do you test?

Answer 10

atfl, passive drawer

Question 11

how would you test for a calcaneoufibular injury? is this common

Answer 11

talar tilt test, no uncommon

Question 12

what is active stability on the medial side of tcj?

Answer 12

tib post, fhl, fdl

Question 13

what kind of joint is the talocalaneal joint?

Answer 13

synovial joint (gliding and rotation, inversion, eversion)

Question 14

what is the major ligament at the talo-calcaneal joint that limits movement in all directions, esp ev

Answer 14

interosseous tcl

Question 15

what two structures does the “spring ligament” connect?

Answer 15

connects calcaneous and navicular

Question 16

what structure does the long plantar ligament protect?

Answer 16

peroneous longus

Question 17

what does the flexibilty of the forefoot depend on?

Answer 17

the position of the rear foot: eversion =greater motion in fore

Question 18

do you have more dorsi or plantar flexion?

Answer 18

dorsi, to allow walking

Question 19

what is the function of each type of ligament at the forefoot?

Answer 19

collateral: resist abd/add of the ip joint and mtp; plantar: resist hyperextension; deep transverse: resist splaying

Question 20

from what source is the dorsal pedis artery

Answer 20

anterior tibialis

Question 21

posterior tibial artery becomes what?

Answer 21

medial and lateral plantar artery

Question 22

what muscles are deep peroneal l5, s1?

Answer 22

pt, edl, edb

Question 23

what muscles are s1, s2?

Answer 23

piriformis, plantaris, soleus gastroc (n to p and tibial)

Question 24

what muscles are l4, l5?

Answer 24

tp, ta (tibial, peroneal)

Question 25

what muscles are s2, s3?

Answer 25

all foot intrinsics, medial plantar and lateral plantar

Question 26

what muscles are l4, l5, s1?

Answer 26

all glutes, tfl, popliteus, edb

Question 27

what musles are l5,s1,s2?

Answer 27

all hamstrings, peroneus