ankle anatomy and biomech

Question 1

the talocrural joint is dependent on the stability provided by what>

Answer 1

stability provided by the distal tib fib joint

Question 2

how many DOF does the talocalcaneal joint have

Answer 2

1 DOF

Question 3

explain the arthokinematics of the talocalanceal joint

Answer 3

calcaneus onto talus: convex on concve
DF: posterior glide
PF: anterior flide

Question 4

what is the resting position of the talus-calcaneus joint

Answer 4

10 degree PF

Question 5

what is the CPP of the talus-calcaneus joint

Answer 5

full DF

Question 6

MOI for the ATFL?

Answer 6

excessive ankle inversion and pf

Question 7

what muscles make up to Deltoid ligament

Answer 7

ant tibionavicular lig
ant tibiotalar lig
tibiocalcaneal lig
post tibiotalar lig

Question 8

what is the DOF of the subtalar joint?

Answer 8

1 DOF; eversion/inversion

Question 9

what is the RP of the subtalar jt

Answer 9

midrange eversion/inversion

Question 10

what is the CPP of the subtalar jt

Answer 10

end range eversion/inversion

Question 11

what is the capsular pattern of the subtalar joint?

Answer 11

inversion > eversion

Question 12

how many DOF do the MTPs have?

Answer 12

2 DOF

Question 13

what is the RP of the MTP

Answer 13

in lsight extension

Question 14

what is the CPP of the MTPs

Answer 14

full extension

Question 15

what is the capsular pattern of the MTPs

Answer 15

1st MTP extension >flexion

2nd-5th MTP flexion > extension

Question 16

arthrokinematics of the MTP?

Answer 16

flexion: plantar glide of the phalynx
extension: dorsal glide of the phalynx
abd/add: relative to 2nd ray. for the 2nd phalynx use the midline as a reference point

Question 17

what type of joint is the PIP and DIP?

Answer 17

modified sellar joint

Question 18

how many DOF does PIP and DIP have?

Answer 18

1 dof

Question 19

What is the RP of PIP/DIP?

Answer 19

slight flexion

Question 20

what is the CPP of the PIP/DIP?

Answer 20

Full extension

Question 21

what is the capsular pattern of PIP/DIP?

Answer 21

extension > flexion

Question 22

what glide is associated w/ flexion of PIP/DIP?

Answer 22

plantar glides

Question 23

what glide is associated w/ extension of PIP/DIP?

Answer 23

dorsal glides

Question 24

what provides static and dynamic support to the medial arch of the foot?

Answer 24

static: plantar aponeurosis and plantar ligament
dynamic: tibialis post/anterior, FDL, FHL, intrinsic plantar muscles of the foot

Question 25

what provides static and dynamic support to the lateral arch of the foot?

Answer 25

static: plantar ligament and plantar fascia dynamic: peroneals

Question 26

what is the primary role of plantar fascia

Answer 26

helps support medial arch of the foot | and abs shock; prevents collapsing of foot w/ overpronation

Question 27

what is the windlass mechanism of the foot?

Answer 27

its a manner in which the plantar fascia manages to support the foot w/ WB. by shortening the distance b/w heel and ball of foot tension in the fasica increases and stabilizes the arch

Question 28

when is the windlass effect maximal in gait?

Answer 28

in the push off phase where max MTP extension occurs