0:01

Let's look at the high and low

0:03

ankle with the toe pointed at

0:05

1.5T in the coronal projection.

0:08

We start out more in the back.

0:11

There's the posterior tib fib ligament.

0:15

Some of the syndesmosis above it, which is

0:18

variably perforated for vessels and nerves.

0:23

Now let's work our way forward

0:24

to the anterior tib fib ligament.

0:28

That is more ill defined, because

0:30

the foot is in plantar flexion.

0:32

So it shows up as some wispy, gray

0:36

structures between the tibia and the fibula.

0:40

Let's do something a little bit more easy.

0:42

Let's go back to the back of the ankle,

0:44

and show you the two major bundles of the

0:48

posterior talofibular ligament, inserting

0:51

on the fibula with a fairly

0:54

broad footprint.

0:57

That structure almost never tears.

0:58

It's very powerful and really only

1:01

ruptures in ankle dislocations.

1:04

We're not going to show you the crural ligaments,

1:06

which are not well seen with the foot implant

1:08

or flexion, but we are going to show you this

1:10

ligament, the calcaneal fibular ligament, which is

1:15

optimally seen with the foot implant or flexion.

1:19

So let's move forward a little bit.

1:22

Let's move to the front.

1:23

Not all the way to the front.

1:24

Look where we are on the fibula.

1:27

This ligament that we're going

1:28

to show you goes from proximal,

1:31

superolateral, to posterior inferomedial.

1:37

So in other words, it's going to go

1:39

from the fibula and go backwards.

1:42

Let's go backwards, sorry.

1:44

Backwards.

1:45

There it is.

1:45

Now it's triangular.

1:47

Let's keep going backwards.

1:49

Now, it almost looks like a tendon.

1:52

It's lining up with the peroneus brevis,

1:54

but it is not the peroneus brevis.

1:57

It is the spreading out of the insertion

2:01

of the calcaneal fibular ligament.

2:03

There it is, there it is,

2:05

there it is, there it is, there it is,

2:08

inserting on the back of the calcaneus.

2:12

That is the lateral collateral ligament anatomy

2:15

in the coronal projection with the toe pointed.

Lateral Collateral Ligamentous Anatomy: Coronal Projection

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0:01

Let's look at the high and low

0:03

ankle with the toe pointed at

0:05

1.5T in the coronal projection.

0:08

We start out more in the back.

0:11

There's the posterior tib fib ligament.

0:15

Some of the syndesmosis above it, which is

0:18

variably perforated for vessels and nerves.

0:23

Now let's work our way forward

0:24

to the anterior tib fib ligament.

0:28

That is more ill defined, because

0:30

the foot is in plantar flexion.

0:32

So it shows up as some wispy, gray

0:36

structures between the tibia and the fibula.

0:40

Let's do something a little bit more easy.

0:42

Let's go back to the back of the ankle,

0:44

and show you the two major bundles of the

0:48

posterior talofibular ligament, inserting

0:51

on the fibula with a fairly

0:54

broad footprint.

0:57

That structure almost never tears.

0:58

It's very powerful and really only

1:01

ruptures in ankle dislocations.

1:04

We're not going to show you the crural ligaments,

1:06

which are not well seen with the foot implant

1:08

or flexion, but we are going to show you this

1:10

ligament, the calcaneal fibular ligament, which is

1:15

optimally seen with the foot implant or flexion.

1:19

So let's move forward a little bit.

1:22

Let's move to the front.

1:23

Not all the way to the front.

1:24

Look where we are on the fibula.

1:27

This ligament that we're going

1:28

to show you goes from proximal,

1:31

superolateral, to posterior inferomedial.

1:37

So in other words, it's going to go

1:39

from the fibula and go backwards.

1:42

Let's go backwards, sorry.

1:44

Backwards.

1:45

There it is.

1:45

Now it's triangular.

1:47

Let's keep going backwards.

1:49

Now, it almost looks like a tendon.

1:52

It's lining up with the peroneus brevis,

1:54

but it is not the peroneus brevis.

1:57

It is the spreading out of the insertion

2:01

of the calcaneal fibular ligament.

2:03

There it is, there it is,

2:05

there it is, there it is, there it is,

2:08

inserting on the back of the calcaneus.

2:12

That is the lateral collateral ligament anatomy

2:15

in the coronal projection with the toe pointed.

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Description

Faculty

Stephen J Pomeranz, MD

Chief Medical Officer, ProScan Imaging. Founder, MRI Online

ProScan Imaging

Lesson

Foot & Ankle MRI Mastery Series: Pre-Course Activities

Lesson

Foot & Ankle MRI Mastery Series: Introduction

Lesson

Foot & Ankle MRI Mastery Series: Protocols and Sequences

Lesson

Foot & Ankle MRI Mastery Series: Anatomy

Lesson

Foot & Ankle MRI Mastery Series: Mid-foot Anatomy

Lesson

Foot & Ankle MRI Mastery Series: Case Review

Lesson

Foot & Ankle Masses

Lateral Collateral Ligamentous Anatomy: Coronal Projection