MRI Rules

Question 1

What is the order of images you should read first?

Answer 1

T2 then T1

Question 2

What images should you read first? (coronal, transverse or sagittal?)

Answer 2

1. coronal (frontal)
2. transverse (axial)
3. sagittal

Question 3

On sagittal view, what is the order of structures under the 5th met?

Answer 3

FDMB- most lateral
Tendon of ABDM is next (black)
muscle of ABDM is next (grey)
*this is a “sandwhich” with the tendon in between

Question 4

On sagittal view, From the medial cortex of the 5th met to the middle bisection of the 3rd met is what?

Answer 4

interossei (dorsal/plantar)

Question 5

On sagittal view, what lies From the medial bisection of the 3rd met to the lateral part of the 1st met?

Answer 5

oblique head of ADH

Question 6

On sagittal view, proximal to the TMTJ in the same area as ADH is what muscle?

Answer 6

QP

Question 7

On coronal view of the rearfoot, what muscle(s) lie in between the middle bisection and medial cortex of the calcaneus?

Answer 7

inferior muscle- FDB
on top- QP
*these muscles love each other

Question 8

if you see a crescent shaped fibula, what muscle is next to it?

Answer 8

PB

Question 9

if you see a round shaped fibula, what muscle is next to it?

Answer 9

PL

Question 10

which structure in the neurovascular bundle in the medial ankle sits next to FHL?

Answer 10

tibial nerve

Question 11

Recall the peroneal tubercle on the calcaneus has tunnels for the tendons of PL and PB. which runs superiory? inferiorly?

Answer 11

PB- superior

PL- inferior

Question 12

what are the 3 striated ligaments?

Answer 12

posterior talofib
posterior tibiotalar
short plantar ligament
*striated bc they contain fat

Question 13

if the fibula is round shaped, what does this indicate about your section? what ligaments do you expect to see?

Answer 13

section is higher up
tib-fib ligaments
anterior tibiotalar

Question 14

if the fibula is crescent shaped, what does this indicate about your section? what ligaments do you expect to see?

Answer 14

section is lower
posterior talofib
tibionavicular

Question 15

What is the Master’s knot of Henry?

Answer 15

junction between FDL and FHL

Question 16

On sagittal image, where is the oblique head of the ADH seen?

Answer 16

between lateral cortex of 1st met to the medial bisection of the 3rd met

Question 17

On sagittal image, where are the interossei seen?

Answer 17

lateral bisection of 3rd met to the medial border of 5th met

Question 18

the tendon of FHL runs closest to which head of the FHB?

Answer 18

lateral head of FHB

Question 19

On sagittal rearfoot image, where does ABDM end?

Answer 19

medial bisection of the calcaneus

then QP and FDB begin

Question 20

what is the relationship of the tendon of FHL to its muscle belly?

Answer 20

tendon is medial to the muscle belly

Question 21

what is the relationship of teh tendon of PB to its muscle belly?

Answer 21

PB tendon is lateral to its muscle belly

Question 22

On sagittal MRI using the metatarsals as your guide, where does the TA run from?

Answer 22

medial most aspect of foot up until medial bisection of 1st met

Question 23

On sagittal MRI using the metatarsals as your guide, where does the EHL run from?

Answer 23

medial to 2nd met head to bisection of 1st met

Question 24

Where does EDL and PT begin on sagittal MRI using metatarsals as your guide?

Answer 24

lateral bisection of 2nd met all the way to skin of 5th digit