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Dr. Resnick's MSK Conference
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Lower Extremities MRI Conference
Musculoskeletal Imaging
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Upskill in high growth, advanced imaging areas.
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Prepare trainees to be on call for the emergency department with this specialized training series.
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.
10 topics, 48 min.
13 topics, 40 min.
Types of Force in Bone Injury
5 m.Articular Cartilage Anatomy
4 m.Patterns of Failure in Articular Cartilage
3 m.Chondral Delamination
3 m.Chondral Delamination Part 2
4 m.Chondral Delamination Part 3
3 m.Subchondral Bone: Wolf's Law
3 m.Subchondral Forces
3 m.Subchondral Bone: Chondral & Osteochondral Injury
3 m.Chondral & Osteochondral Fracture
5 m.Subchondral Fracture
3 m.Features and Bone Contusions
5 m.Intramedullary Fat Lysis/Necrosis
4 m.5 topics, 28 min.
10 topics, 41 min.
MRI of Muscle Injury, Anatomy & Function
4 m.DOMS: Delayed Onset Muscle Injury
3 m.Muscle Strain
4 m.Muscle Architecture
5 m.Architectural Injuries in Muscles
4 m.Complex Muscle Anatomy: Rectus Femoris
4 m.Grading Muscle Injury
5 m.Myofascial Injury & Reporting
6 m.Direct Muscle Injury
7 m.Muscle Wrappers
5 m.12 topics, 46 min.
Entrapment Neuropathies & Nerve Anatomy
5 m.Neuropathy: Direct & Secondary Signs
5 m.Nerve Injury Classification
4 m.Lumbar Plexus & Sacral Plexus
4 m.Lateral Femoral Cutaneous Nerve
3 m.Femoral Nerve
3 m.Saphenous Nerve
5 m.Sciatic Nerve
4 m.Common Peroneal Nerve
3 m.Superficial & Deep Peroneal Nerve
7 m.Tibial Nerve
5 m.Medial & Lateral Plantar Nerves, Baxter's Neuropathy, Sural Nerve
6 m.5 topics, 23 min.
2 topics
0:00
So go to back to one more case
0:02
and if your practice is like mine, your ER physicians like
0:07
to trip you up with odd, uh, histories.
0:11
So this is what we got.
0:13
He had pain
0:14
and felt a pop while stepping off a curb
0:16
for the eagle eyes in the audience, we can not,
0:19
we can see past in these fights here,
0:22
but we can also see this, this
0:25
lucency in the posterior aspect of the calcaneus.
0:29
So like every good ER physician does from the er,
0:33
we get a CT of this region.
0:35
And here we can appreciate this ika that has broken
0:39
through the posterior cortex of the calcaneus
0:43
and into
0:45
and opens up into this large loosen lesion
0:48
in the calcaneal tuberosity.
0:51
A little bit more anteriorly.
0:53
We see the sclerotic foci along the anterior U
0:57
and media aspect of the cavity, which
1:02
represented some areas of sequestrum, uh,
1:05
for this Brody's abscess that has the cloaca posteriorly.
1:10
Unfortunately, for this patient, he did end up having, um,
1:15
some follow-up images
1:16
and so we can see the MRI at the time
1:19
of initial presentation demonstrating the acute
1:23
osteomyelitis involving the posterior calcaneus
1:26
with the interosseous abscess with the cloaca.
1:30
And subsequently he had some aspirations performed, but,
1:35
and multiple treatments.
1:36
But despite all of these, he continued
1:39
to have chronic osteomyelitis.
1:41
This is him a couple months later
1:43
now forming another cloaca along the lateral margin
1:48
of the calcaneus with this sinus tract, uh, opening up
1:53
to this skin surface.
1:55
As we look at the T one post contrast sequence,
1:57
we can see a lot of granulation tissue around, uh,
2:01
where the abscess was located before
2:05
and still areas of low signal intensity, uh,
2:08
within the center of this, which may represent some
2:13
residual sequestrum
2:14
that was not removed from the time of surgery.
2:17
So at the time of, of the initial presentation, we have the,
2:21
uh, axi T one stir and pre and post contrast images.
2:25
And these just nicely, again,
2:26
redemonstrate the osteomyelitis,
2:28
but also, uh, associated abscesses that were starting
2:33
to form along the lateral margin of the calcaneus.
2:37
And these, uh,
2:39
these collections over here in the lateral aspect
2:41
of the foot were, were actually aspirated, but I suspect
2:45
because of its proximity to the bone here, this is what led
2:49
to the formation
2:51
of the sinus tract along the lateral margin of the foot.
2:54
Later on.
Interactive Transcript
0:00
So go to back to one more case
0:02
and if your practice is like mine, your ER physicians like
0:07
to trip you up with odd, uh, histories.
0:11
So this is what we got.
0:13
He had pain
0:14
and felt a pop while stepping off a curb
0:16
for the eagle eyes in the audience, we can not,
0:19
we can see past in these fights here,
0:22
but we can also see this, this
0:25
lucency in the posterior aspect of the calcaneus.
0:29
So like every good ER physician does from the er,
0:33
we get a CT of this region.
0:35
And here we can appreciate this ika that has broken
0:39
through the posterior cortex of the calcaneus
0:43
and into
0:45
and opens up into this large loosen lesion
0:48
in the calcaneal tuberosity.
0:51
A little bit more anteriorly.
0:53
We see the sclerotic foci along the anterior U
0:57
and media aspect of the cavity, which
1:02
represented some areas of sequestrum, uh,
1:05
for this Brody's abscess that has the cloaca posteriorly.
1:10
Unfortunately, for this patient, he did end up having, um,
1:15
some follow-up images
1:16
and so we can see the MRI at the time
1:19
of initial presentation demonstrating the acute
1:23
osteomyelitis involving the posterior calcaneus
1:26
with the interosseous abscess with the cloaca.
1:30
And subsequently he had some aspirations performed, but,
1:35
and multiple treatments.
1:36
But despite all of these, he continued
1:39
to have chronic osteomyelitis.
1:41
This is him a couple months later
1:43
now forming another cloaca along the lateral margin
1:48
of the calcaneus with this sinus tract, uh, opening up
1:53
to this skin surface.
1:55
As we look at the T one post contrast sequence,
1:57
we can see a lot of granulation tissue around, uh,
2:01
where the abscess was located before
2:05
and still areas of low signal intensity, uh,
2:08
within the center of this, which may represent some
2:13
residual sequestrum
2:14
that was not removed from the time of surgery.
2:17
So at the time of, of the initial presentation, we have the,
2:21
uh, axi T one stir and pre and post contrast images.
2:25
And these just nicely, again,
2:26
redemonstrate the osteomyelitis,
2:28
but also, uh, associated abscesses that were starting
2:33
to form along the lateral margin of the calcaneus.
2:37
And these, uh,
2:39
these collections over here in the lateral aspect
2:41
of the foot were, were actually aspirated, but I suspect
2:45
because of its proximity to the bone here, this is what led
2:49
to the formation
2:51
of the sinus tract along the lateral margin of the foot.
2:54
Later on.
Report
Faculty
Donald Resnick, MD
Professor Emeritus, Department of Radiology
University of California, San Diego
Rodrigo Aguiar, MD, PhD
Professor of Radiology
Federal University of Paraná - Brazil
Mini N. Pathria, MD, FRCP(C)
Division Chief, Musculoskeletal Imaging
University of California San Diego
Evelyne Fliszar, MD
Professor of Clinical Radiology
UC San Diego
Karen Chen, MD
MSK Radiologist
VA Healthcare System, San Diego
Tags
Musculoskeletal (MSK)
MRI
Knee
Hip & Thigh
Foot & Ankle
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