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Coronal Anatomy: Extrinsic Ligaments Part 9

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We're on wrist anatomy, extrinsics,

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talking about the interosseous ligaments.

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Here's the big fat volar one that goes

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all the way across the volar radioulnar

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ligament, which we talked about separately.

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And by the way, this rarely tears without

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accompanying triangular fibrocartilage tears.

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And in fact, it represents the

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anterior condensation of the TFCC.

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Now we're focusing now on dorsal ligaments.

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Here's the dorsal radioulnar ligament,

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which tends to be a little bit thinner, and we

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can see it on the T2-weighted image, although

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not quite as well because everything is dark.

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But we see it very nicely on the T1-weighted image.

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The dorsal radioulnar ligament is a

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stabilizer along with the interosseous membrane

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with the hand in the pronated position

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as opposed to the volar radioulnar

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ligament responsible for stabilization

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in the supination position.

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Let's take a look diagrammatically.

Report

Faculty

Stephen J Pomeranz, MD

Chief Medical Officer, ProScan Imaging. Founder, MRI Online

ProScan Imaging

Tags

Musculoskeletal (MSK)

MRI

Idiopathic

Hand & Wrist

Congenital

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