0:01

Sagittal wrist MRI, the dreaded

0:04

ligaments in the dreaded projection.

0:07

Not a good combination, but let's

0:08

have at it with some simplicity.

0:11

We're not going to take every ligament; we've

0:13

explored them in other vignettes, but let's

0:15

start out with the radioscaphocapitate ligament,

0:19

which comes off the radial styloid and has a V

0:23

shaped or inverted V-shaped configuration on the

0:26

radial side of the wrist coronally, and here it

0:29

is cross-referenced in front of the scaphoid.

0:32

as a thick, dark band allowing

0:35

the scaphoid to stand up.

0:38

In other words, when we lose this ligament, along with

0:41

the scapholunate stabilizers, the scaphoid will sag

0:45

downward or will rotate in a counterclockwise fashion.

0:51

Another highlighted ligament in this projection,

0:55

which you've heard about before, is the

0:57

dorsal, or dorsal, radial ligament of the thumb.

1:02

It's a little bit counterintuitive

1:03

to think of the strongest

1:05

and most important stabilizing ligament of the thumb

1:08

being seen in the sagittal projection, but it is.

1:11

There it is from the greater multangular or

1:14

trapezium to the base of the first metacarpal.

1:17

You must confirm the integrity of this ligament.

1:23

Then we get into the triangular

1:26

fibrocartilage attachments.

1:28

That's where it gets really dicey.

1:31

The triangular fibrocartilage is anchored

1:34

by its posterior condensation to known

1:37

as the dorsal radial ulnar ligament.

1:40

And the anterior condensation right here, known

1:43

as the palmar or volar radial ulnar ligament.

1:48

And from these ligaments come some other ligaments

1:51

known as the ulnar collateral ligaments.

1:54

This is a good stopping point, and we'll

1:56

return in a separate vignette to dissect

1:59

those as part of our sagittal atomic analysis.

Sagittal Anatomy Part3

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0:01

Sagittal wrist MRI, the dreaded

0:04

ligaments in the dreaded projection.

0:07

Not a good combination, but let's

0:08

have at it with some simplicity.

0:11

We're not going to take every ligament; we've

0:13

explored them in other vignettes, but let's

0:15

start out with the radioscaphocapitate ligament,

0:19

which comes off the radial styloid and has a V

0:23

shaped or inverted V-shaped configuration on the

0:26

radial side of the wrist coronally, and here it

0:29

is cross-referenced in front of the scaphoid.

0:32

as a thick, dark band allowing

0:35

the scaphoid to stand up.

0:38

In other words, when we lose this ligament, along with

0:41

the scapholunate stabilizers, the scaphoid will sag

0:45

downward or will rotate in a counterclockwise fashion.

0:51

Another highlighted ligament in this projection,

0:55

which you've heard about before, is the

0:57

dorsal, or dorsal, radial ligament of the thumb.

1:02

It's a little bit counterintuitive

1:03

to think of the strongest

1:05

and most important stabilizing ligament of the thumb

1:08

being seen in the sagittal projection, but it is.

1:11

There it is from the greater multangular or

1:14

trapezium to the base of the first metacarpal.

1:17

You must confirm the integrity of this ligament.

1:23

Then we get into the triangular

1:26

fibrocartilage attachments.

1:28

That's where it gets really dicey.

1:31

The triangular fibrocartilage is anchored

1:34

by its posterior condensation to known

1:37

as the dorsal radial ulnar ligament.

1:40

And the anterior condensation right here, known

1:43

as the palmar or volar radial ulnar ligament.

1:48

And from these ligaments come some other ligaments

1:51

known as the ulnar collateral ligaments.

1:54

This is a good stopping point, and we'll

1:56

return in a separate vignette to dissect

1:59

those as part of our sagittal atomic analysis.

Report

Faculty

Stephen J Pomeranz, MD

Chief Medical Officer, ProScan Imaging. Founder, MRI Online

ProScan Imaging

Lesson

Wrist MRI Mastery Series: Pre-Course Activities

Lesson

Wrist MRI Mastery Series: Introduction to Wrist Imaging

Lesson

Wrist MRI Mastery Series: Imaging Techniques & Protocols

Lesson

Wrist MRI Mastery Series: Anatomy

Lesson

Wrist MRI Mastery Series: Anatomy - Focus on the TFC

Lesson

Wrist MRI Mastery Series: Case Review

Lesson

Wrist MRI Mastery Series: Surgical Perspective - Case Review

Sagittal Anatomy Part3