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Training Collections
Library Memberships
On-demand course library with video lectures, expert case reviews, and more
Fellowship Certificate™ Programs
Practice-focused training programs designed to help you gain experience in a specific subspecialty area.
Ultimate Learning Pass
Unlock access to our full Course Library and all self-paced Fellowships.
Noon Conference (Free)
Get access to free live lectures, every week, from top radiologists.
Case of the Week (Free)
Get a free weekly case delivered right to your inbox.
Dr. Resnick's MSK Conference
Learn directly from the MSK Master himself.
Lower Extremities MRI Conference
Musculoskeletal Imaging
Emergency Imaging
PET Imaging
Pediatric Imaging
For Training Programs
Supplement your training program with case-based learning for residents, registrars, fellows, and more.
For Private Practices
Upskill in high growth, advanced imaging areas.
Emergency Call Prep
Prepare trainees to be on call for the emergency department with this specialized training series.
Lesson
MRI Mastery Series: Knee Pre Course Activities
1 topic, 6 min.
Lesson
Knee - Anatomy of the Supporting Structures
28 topics, 1 hr. 43 min.
Basic Knee Ligament Overview
7 m.Major Tendons of the Knee
6 m.Relationships Between the Joints of the Knee
4 m.Neurovascular Bundles of the Knee
4 m.Patellar Stabilizers of the Knee
4 m.A Deeper Look at the MPFL
6 m.The Basics of the Posterior Cruciate Ligament
3 m.PCL: Coronal, Axial and Sagittal Views
4 m.PCL: Sagittal on MRI
5 m.PCL: Coronal on MRI
3 m.PCL: Axial on MRI
3 m.Basic Anterior Cruciate Ligament (ACL) Anatomy
4 m.The Anatomy of the Anterior Cruciate Ligament Part 2
6 m.Anterior Cruciate Ligament Anatomy: Axial View
4 m.Anterior Cruciate Ligament Anatomy: Coronal View
3 m.Anterior Cruciate Ligament on MRI: Sagittal Views
4 m.Anterior Cruciate Ligament on MRI: Axial View
2 m.Anterior Cruciate Ligament on MRI: Coronal View
3 m.Medial Collateral Ligament Basics: Layer 1
4 m.Medial Collateral Ligament Basics: Layer 2 & 3
7 m.Medial Collateral Ligament (MCL) Summary
3 m.Medial Supporting Structures of the Knee
2 m.The Anatomy of the Lateral Collateral Ligament Complex - FCL
3 m.The Anatomy of the Lateral Collateral Ligament Complex (LCL) on MRI
4 m.The Anatomy of the Lateral Collateral Ligament Complex
5 m.LCL Complex on MRI
3 m.The Anatomy of the Quadriceps Femoris Tendon of the Knee
4 m.MRI Anatomy of the knee: Quadricep Femoral Tendon
5 m.Lesson
Supporting Structure Anatomy: Focus on the Posterior Corners
21 topics, 1 hr. 13 min.
The Knee Anatomy: Posterior Medial Corner
6 m.The Posteromedial Corner: Semimembranosus Expansions
3 m.The Posteromedial Corner: Semimembranosus Expansions part 2
2 m.The Posteromedial Corner: Semimembranosus Expansions part 3
2 m.The Posteromedial Corner: Semimembranosus Expansions part 4
2 m.The Posteromedial Corner: Posterior Oblique Ligament
5 m.The Posteromedial Corner: Posterior Oblique Ligament part 2
4 m.The Posteromedial Corner: Oblique Popliteal Ligament
3 m.The Posteromedial Corner: Posterior Capsule
5 m.The Posteromedial Corner Anatomy on MRI
3 m.The Posteromedial Corner on MRI part 2
5 m.The Posteromedial Corner on MRI part 3
4 m.The Posteromedial Corner on MRI part 4
4 m.The Posteromedial Corner on MRI part 5
5 m.The Posterolateral Corner Anatomy: Introduction
4 m.The Posterolateral Corner Anatomy: LCL
6 m.The Posterolateral Corner: Biomechanics
3 m.The Posterolateral Corner Anatomy: Popliteus Muscle on MRI
4 m.The Posterolateral Corner: Arcuate and Fabellofibular Ligament
5 m.The Posterolateral Corner: Arcuate and Fabellofibular Ligament on MRI
3 m.The Posterolateral Corner Anatomy: Biceps Femoris Tendon
5 m.Lesson
Case Review: Supporting Structure Injuries
23 topics, 2 hr. 46 min.
Knee Case Review: 14Yr old with Posterolateral Corner Football Injury
15 m.Case Review: 54 year old Male with a Twisting Injury
9 m.Case Review: 28 Year Old Football Player Who Heard a Pop While Making a Cut
6 m.Case Review: 90 Year Old Female Patient, No History of Trauma, Now Has Swelling
10 m.Case Review: Return to 14 Year Old Football Player Case
5 m.Case Review: 37 Year Old Male with Complex Knee Instability
7 m.Case Review: PCL Mechanism of Injury
7 m.Case Review: 28 Year Old Injured in a Fall
6 m.Case Review: PCL Injury Companion Discussion
5 m.Unknown Knee Case: 54yr Old Male With Knee Swelling
5 m.Case Review: 54 Year Old Male with injury and a small PCL
4 m.Case Review: 54 Year Old Male – Assessing the Other Posterior Corner
5 m.Unknown Knee Case: 25yr Old involved in MVA
10 m.Case Review: 49 Year Old with “Osteoarthritis”
6 m.Case Review: 49 Year Old Female with Knee Pain and a Sensation of Catching
6 m.Case Review: 66 Year Old Female with Strange PCL Presentation
5 m.Case Review: 51 Year Old Male with Worsening Chronic Knee Pain
8 m.Case Review: 36 Year Old Female with Knee Locking after Kickball Game
12 m.Case Review: 23 Year Old Male with Pain After a Fall
9 m.Case Review: 22 Year Old Male with Knee Pain. Had Prior ACL Repair
12 m.Case Review: 12 Year Old Male with Problematic Graft
10 m.Case Review: 43 Year Old Male with Knee Swelling in Absence of Injury
7 m.Case Review: 12 Year Old Male with Anterior Knee Pain
7 m.Lesson
Meniscus MRI
5 topics, 28 min.
Lesson
Pivot Shift Injuries and Meniscal Pathology
3 topics, 24 min.
Lesson
More Meniscus Tears with Case Examples
6 topics, 40 min.
Lesson
Applying What You've Learned
3 topics, 13 min.
0:00
Knee anatomy.
0:01
The cruciates, the PCL.
0:03
A PCL is a central knee stabilizer for articulating bones.
0:10
It resist varus-valgus but especially keeps the tibia
0:15
from migrating posteriorly. So when the PCL is torn,
0:20
the tibia is going to sag posteriorly and you might even end up
0:24
lying on your back with something called the tibial sag sign.
0:28
It also resists external rotation of the tibia,
0:32
and we'll talk more about that in a moment.
0:33
It is an arc-shaped kind of fatty structure compared to the ACL.
0:38
It's a little bit thicker, about 13 mm in width,
0:41
where the ACL about 11-12 mm.
0:44
And it has behind it a round structure that you're seeing coursing in and
0:48
out of the plane called the meniscofemoral ligament of wrisberg,
0:51
which helps stabilize the lateral meniscus and arises
0:56
from it coursing across the back of the knee.
0:58
I have it drawn here in pink.
1:00
And then more parallel is this arc-shaped structure
1:03
that is kind of like a mini-me of the PCL called
1:06
the meniscofemoral ligament of Humphrey.
1:09
Now, the footprint of the PCL
1:11
and the Humphrey ligament is quite complex.
1:13
Sometimes these 2 may come together,
1:15
sometimes they're very discrete and separated.
1:18
And as a result of this, a pitfall may occur anteriorly
1:21
that I'll share with you a little bit later on.
1:24
Now, the PCL fibers are twisted so they're arc.
1:28
They arc around or torse around each other,
1:32
unlike a more parallel configuration to the ACL.
1:34
And this has an effect on how it tears.
1:38
For usually when the PCL tears it does not fully retract or separate
1:42
like the ACL does. It kind of fills with blood and fluid.
1:46
Another important take home message is the PCL inserts in a depression
1:53
on the back of the tibia that lies below the tibial plateau.
1:57
So if a surgeon is looking from the front, especially with the ACL intact,
2:01
it is very hard to see and even get to this portion of the PCL.
2:06
So tears here are the domain of MRI, unless there's a fracture,
2:11
in which case you can see the evulsion fracture on a plane film.
The Basics of the Posterior Cruciate Ligament
HIDEInteractive Transcript
0:00
Knee anatomy.
0:01
The cruciates, the PCL.
0:03
A PCL is a central knee stabilizer for articulating bones.
0:10
It resist varus-valgus but especially keeps the tibia
0:15
from migrating posteriorly. So when the PCL is torn,
0:20
the tibia is going to sag posteriorly and you might even end up
0:24
lying on your back with something called the tibial sag sign.
0:28
It also resists external rotation of the tibia,
0:32
and we'll talk more about that in a moment.
0:33
It is an arc-shaped kind of fatty structure compared to the ACL.
0:38
It's a little bit thicker, about 13 mm in width,
0:41
where the ACL about 11-12 mm.
0:44
And it has behind it a round structure that you're seeing coursing in and
0:48
out of the plane called the meniscofemoral ligament of wrisberg,
0:51
which helps stabilize the lateral meniscus and arises
0:56
from it coursing across the back of the knee.
0:58
I have it drawn here in pink.
1:00
And then more parallel is this arc-shaped structure
1:03
that is kind of like a mini-me of the PCL called
1:06
the meniscofemoral ligament of Humphrey.
1:09
Now, the footprint of the PCL
1:11
and the Humphrey ligament is quite complex.
1:13
Sometimes these 2 may come together,
1:15
sometimes they're very discrete and separated.
1:18
And as a result of this, a pitfall may occur anteriorly
1:21
that I'll share with you a little bit later on.
1:24
Now, the PCL fibers are twisted so they're arc.
1:28
They arc around or torse around each other,
1:32
unlike a more parallel configuration to the ACL.
1:34
And this has an effect on how it tears.
1:38
For usually when the PCL tears it does not fully retract or separate
1:42
like the ACL does. It kind of fills with blood and fluid.
1:46
Another important take home message is the PCL inserts in a depression
1:53
on the back of the tibia that lies below the tibial plateau.
1:57
So if a surgeon is looking from the front, especially with the ACL intact,
2:01
it is very hard to see and even get to this portion of the PCL.
2:06
So tears here are the domain of MRI, unless there's a fracture,
2:11
in which case you can see the evulsion fracture on a plane film.
Report
Description
Faculty
Stephen J Pomeranz, MD
Chief Medical Officer, ProScan Imaging. Founder, MRI Online
ProScan Imaging
Tags
Trauma
Musculoskeletal (MSK)
MRI
Knee
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