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<v ->With regard to intraligamentous bursae,

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let me show you a couple of interesting examples.

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This is an example of the medial collateral ligament bursa,

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and in fact, it's four examples

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of the types of abnormalities you may see.

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Now it is not uncommon to see small collections of fluid

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in this particular location,

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and generally those collections are asymptomatic.

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This bursa may have one continuous cavity

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or have several cavities arranged segmentally.

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So the fluid may be discontinuous within the bursa.

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The bursa is located between the superficial

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and deep portion of the medial supporting structures.

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There are increased amounts of bursal fluid here

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when you're dealing with injuries

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involving the medial supporting structures.

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Another interesting place

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in which we see intraligamentous bursa

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are between the spinous processes throughout the spine.

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Here, taken from an article

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that we wrote years and years ago,

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we're showing you the location, in this sagittal section,

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of the bursa between these spinous processes.

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This is a rather common site

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for calcium pyrophosphate crystal deposition,

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and you'll note in this particular specimen radiograph

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we can see also calcification pyrophosphate

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within the intervertebral discs.

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I'll talk more about that phenomenon in a later lecture.

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One of the interesting diseases

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that occurs in this location,

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that is associated with interspinous bursitis

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is known as Baastrup's Disease,

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resulting in enlargement of the spinous processes

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and contact between them, as shown in that those images.