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Axial Anatomy: Extrinsic Ligaments

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Wrist anatomy, palmar or anterior,

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or ventral, or volar extrinsics.

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Not everybody's favorite subject.

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For this, I need a coronal projection that shows

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the radioscaphocapitate ligament, a volar ligament

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that prevents rotatory displacement of the scaphoid.

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It goes from the radial styloid across the distal

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pole and waist of the scaphoid to the capitate.

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Let's cross-reference it.

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There it is in the short axis projection.

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It's an extrinsic, not to be confused

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with this intrinsic, the palmar

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aspect of the scapholunate ligament.

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Now let's go to the radiolunate ligament,

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also known as the radiolunotriquetral

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ligament, which you heard about

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in the coronal projection.

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It's a little easier to see.

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It's a little bit fatter.

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It's a little more central.

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And there it is in the short axis projection,

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again, adjacent to the palmar aspect of the

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scapholunate ligament and contributes fibers to it.

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We're going to talk about the collateral

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ligaments in a separate short vignette.

Report

Faculty

Stephen J Pomeranz, MD

Chief Medical Officer, ProScan Imaging. Founder, MRI Online

ProScan Imaging

Tags

Musculoskeletal (MSK)

MRI

Idiopathic

Hand & Wrist

Congenital

Acquired/Developmental

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