0:00

Now if we try to classify ligaments,

0:02

and I'm gonna emphasize the knee,

0:05

although a similar classification could u be used elsewhere,

0:09

there are three particular, uh, patterns

0:13

or classifications of ligaments.

0:15

Most common ligaments in the human body occur in the

0:19

capsule, we'll call them primary capsular

0:22

ligaments in the knee.

0:23

I'll illustrate that with the medial collateral ligament,

0:27

uh, of the, uh, of the knee.

0:30

A second pattern number two here would be accessory

0:34

intracapsular ligaments.

0:35

Typically, these ligaments are intracapsular

0:39

and extra synovial.

0:41

We'll be talking about the cruciate ligaments in the second

0:44

lecture, uh, today.

0:46

And then the third are accessory extracapsular ligaments.

0:51

Here is what I showed diagrammatically,

0:53

and in the knee we're talking about

0:56

the fibular collateral ligament.

0:58

The calcan fibrile ligament

1:00

of the ankle would be another example.

1:03

These ligaments are extracapsular

1:05

and they often bring a third bone into the joint.

1:09

Alright, so these are the three basic types of ligaments.

1:14

Now, when we look at the attachment of ligaments to bone,

1:17

particularly those about the knee, two particular patterns

1:21

of attachment have been described.

1:24

One is called a direct insertion

1:27

or attachment of the ligament, where in fact,

1:30

the ligament fibers penetrate the bone at right angles.

1:34

We see this at the femoral insertion

1:36

of the medial collateral ligament,

1:38

particularly the deep medial capsular ligament

1:41

and the tibial insertion of the anterior cruciate ligament.

1:45

And in my experience, this is one

1:47

of the places when you have this sort of insertion

1:51

or attachment, that marrow edema may be seen

1:56

with a tensile injury to that particular ligament.

1:59

Here, the deep medial meniscal femoral

2:02

ligament is being shown.

2:04

The second pattern of attachment

2:06

or insertion is an indirect one,

2:09

and I've listed the tibial insertion

2:12

of the medial collateral ligament.

2:14

Here. The ligament fibers penetrate the bone, not directly,

2:18

but obliquely.

2:20

And generally, although not invariably,

2:22

when you have a tensile injury to that sort of ligament.

2:25

Here I show you the superficial medial collateral ligament.

2:29

When you have a tensile injury to that ligament,

2:33

you do not have sub marrow edema.

Ligament Classification & Attachments

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0:00

Now if we try to classify ligaments,

0:02

and I'm gonna emphasize the knee,

0:05

although a similar classification could u be used elsewhere,

0:09

there are three particular, uh, patterns

0:13

or classifications of ligaments.

0:15

Most common ligaments in the human body occur in the

0:19

capsule, we'll call them primary capsular

0:22

ligaments in the knee.

0:23

I'll illustrate that with the medial collateral ligament,

0:27

uh, of the, uh, of the knee.

0:30

A second pattern number two here would be accessory

0:34

intracapsular ligaments.

0:35

Typically, these ligaments are intracapsular

0:39

and extra synovial.

0:41

We'll be talking about the cruciate ligaments in the second

0:44

lecture, uh, today.

0:46

And then the third are accessory extracapsular ligaments.

0:51

Here is what I showed diagrammatically,

0:53

and in the knee we're talking about

0:56

the fibular collateral ligament.

0:58

The calcan fibrile ligament

1:00

of the ankle would be another example.

1:03

These ligaments are extracapsular

1:05

and they often bring a third bone into the joint.

1:09

Alright, so these are the three basic types of ligaments.

1:14

Now, when we look at the attachment of ligaments to bone,

1:17

particularly those about the knee, two particular patterns

1:21

of attachment have been described.

1:24

One is called a direct insertion

1:27

or attachment of the ligament, where in fact,

1:30

the ligament fibers penetrate the bone at right angles.

1:34

We see this at the femoral insertion

1:36

of the medial collateral ligament,

1:38

particularly the deep medial capsular ligament

1:41

and the tibial insertion of the anterior cruciate ligament.

1:45

And in my experience, this is one

1:47

of the places when you have this sort of insertion

1:51

or attachment, that marrow edema may be seen

1:56

with a tensile injury to that particular ligament.

1:59

Here, the deep medial meniscal femoral

2:02

ligament is being shown.

2:04

The second pattern of attachment

2:06

or insertion is an indirect one,

2:09

and I've listed the tibial insertion

2:12

of the medial collateral ligament.

2:14

Here. The ligament fibers penetrate the bone, not directly,

2:18

but obliquely.

2:20

And generally, although not invariably,

2:22

when you have a tensile injury to that sort of ligament.

2:25

Here I show you the superficial medial collateral ligament.

2:29

When you have a tensile injury to that ligament,

2:33

you do not have sub marrow edema.

Report

Faculty

Donald Resnick, MD

Professor Emeritus, Department of Radiology

University of California, San Diego

Mini N. Pathria, MD, FRCP(C)

Division Chief, Musculoskeletal Imaging

University of California San Diego

Eric Y. Chang, MD

Adjunct Professor, Radiology

University of California, San Diego

Brady K. Huang, MD

Clinical Professor of Radiology

UC San Diego Medical Center

Lesson

Meniscus (preoperative and postoperative)

Lesson

Meniscus Case Review

Lesson

Footprints and mechanisms of knee injury

Lesson

Cruciate Ligaments

Lesson

Knee Injury & Cruciate Ligament Case Review

Lesson

Medial Ligaments

Lesson

Lateral Ligaments

Lesson

Medial and Lateral Ligament Case Review

Lesson

Postoperative Ligaments

Lesson

Extensor Mechanism

Lesson

Popliteal Fossa

Lesson

Postoperative Ligaments, Extensor Mechanism & Popliteal Fossa Case Review

Ligament Classification & Attachments