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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.
Continuing Medical Education (State CME)
Complete all of your state CME requirements in one convenient place.
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.
Case Crunch: Rapid Case Review (Free)
Register for free live board reviews.
Dr. Resnick's MSK Conference
Learn directly from the MSK Master himself.
Lower Extremities MRI Conference
Musculoskeletal 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.
Compliance
NewTrack, fulfill, and report on all your radiologists' credentialing and licensing requirements.
Emergency Call Prep
Prepare trainees to be on call for the emergency department with this specialized training series.
1 topic, 2 min.
4 topics, 25 min.
4 topics, 18 min.
2 topics, 15 min.
10 topics, 35 min.
Osteonecrosis: Femoral Head Involvement
5 m.Marrow Ischemia/Imaging Signs
6 m.Collapse of the Femoral Head
3 m.Marrow Edema in Osteonecrosis
3 m.Osteonecrosis vs. Insufficiency Fractures
5 m.Spontaneous Osteonecrosis of the Knee (SONK)
10 m.Kummell Disease
4 m.Rapidly Destructive Hip Disease
2 m.Mueller-Weiss Syndrome
2 m.Freiberg's Infraction
2 m.3 topics, 14 min.
8 topics, 41 min.
Terminology of Insufficiency Fractures
2 m.Distribution
15 m.Insufficiency Fractures of the Pelvis/Proximal Femur & Distal Femur
6 m.Differentials of Insufficiency Fractures
2 m.Possible Links Between Transient Osteoporosis, Osteonecrosis & Subchondral Insufficiency Fractures
9 m.Imaging Patterns of "Usually" Reversible Insufficiency Diagnoses
7 m.Imaging Patterns of Reversible Insufficiency Diagnoses
2 m.Imaging Patterns of Reversible/Irreversible Insufficiency Diagnoses
3 m.3 topics, 14 min.
9 topics, 38 min.
Chondral Injuries and Types of Force
6 m.Articular Cartilage
6 m.Patterns of Cartilage Failure
8 m.Forces Placed on Subchondral Bone
6 m.Chondral/Osteochondral Injury
4 m.Chondral & Subchondral Fractures
6 m.Lipohemarthrosis
2 m.Subperiosteal & Tenosynovial Extrusion of Fat
2 m.Intramedullary Fat Lysis & Necrosis
3 m.1 topic, 15 min.
0:00
<v ->Let me show another case.
0:02
These next two cases is related
0:05
that you just said in your lecture.
0:10
The first one is a 23 year old female
0:14
present with pain in the medial aspect of the knee
0:17
that started two weeks ago
0:22
with intensification of running.
0:25
We can see in these different sequences,
0:32
two things, two things to see.
0:34
There is different areas, different kind of edema.
0:39
We can see at the, but okay like this,
0:44
okay, this is better to take a look.
0:50
In the condyle, the femoral condyle
0:53
we can see this polka dot sign
0:57
with enlargement of the vessels.
1:00
If you look, this is the vessel
1:03
this is stress reaction in the femoral condyle
1:08
is different that whenever we observe the pattern bone
1:11
on the medial on the tibial plateau is different.
1:15
Because we can see the line of fracture here,
1:21
it's a transverse fracture.
1:23
We have different signs in the same place,
1:26
in the medial compartment, one it's stress reaction
1:30
and another one is the true stress fracture.
1:35
And she did bone dyssymmetry,
1:38
the bone dyssymmetry was normal, she was only 22 years old.
1:43
And after six weeks with physiotherapy and rest,
1:48
she did another MR imaging that I will show you here.
1:55
The complete resolution of the stress reaction the edema
2:02
in the complete resolution of the fracture as you can see,
2:06
we can see the residual line of fracture
2:09
the healing fracture here.
2:11
It's very nice to see different patterns of edema
2:18
in different phases of the stress reaction in this case.
Interactive Transcript
0:00
<v ->Let me show another case.
0:02
These next two cases is related
0:05
that you just said in your lecture.
0:10
The first one is a 23 year old female
0:14
present with pain in the medial aspect of the knee
0:17
that started two weeks ago
0:22
with intensification of running.
0:25
We can see in these different sequences,
0:32
two things, two things to see.
0:34
There is different areas, different kind of edema.
0:39
We can see at the, but okay like this,
0:44
okay, this is better to take a look.
0:50
In the condyle, the femoral condyle
0:53
we can see this polka dot sign
0:57
with enlargement of the vessels.
1:00
If you look, this is the vessel
1:03
this is stress reaction in the femoral condyle
1:08
is different that whenever we observe the pattern bone
1:11
on the medial on the tibial plateau is different.
1:15
Because we can see the line of fracture here,
1:21
it's a transverse fracture.
1:23
We have different signs in the same place,
1:26
in the medial compartment, one it's stress reaction
1:30
and another one is the true stress fracture.
1:35
And she did bone dyssymmetry,
1:38
the bone dyssymmetry was normal, she was only 22 years old.
1:43
And after six weeks with physiotherapy and rest,
1:48
she did another MR imaging that I will show you here.
1:55
The complete resolution of the stress reaction the edema
2:02
in the complete resolution of the fracture as you can see,
2:06
we can see the residual line of fracture
2:09
the healing fracture here.
2:11
It's very nice to see different patterns of edema
2:18
in different phases of the stress reaction in this case.
Report
Faculty
Donald Resnick, MD
Professor Emeritus, Department of Radiology
University of California, San Diego
Carlos H. Longo, MD
Head of Radiology
Hospital Beneficência Portuguesa de São Paulo
Abdalla Skaf, MD
Head of the Department of Diagnostic Imaging Hospital HCor / Medical director of ALTA diagnostics (DASA group)
HCOR / DASA / TELEIMAGEM
Rodrigo Aguiar, MD, PhD
Professor of Radiology
Federal University of Paraná - Brazil
Marcelo D’Abreu, MD
Head of Radiology
Hospital Mae de Deus
Tags
Musculoskeletal (MSK)
MSK
MRI
Knee
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