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Ankle MRI: Anterior Ligaments in Coronal Plane

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When you saw me last, I was talking about the

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posterior ligaments of the ankle, which started in

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the high ankle and ended in the low ankle,

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and I showed you the crural ligaments in between.

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And now I'd like to move forward towards

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the more anterior ligamentous structures.

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So let's do that.

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Now, this projection, which is straight,

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orthogonal, coronal, with the foot in

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the neutral position, is not ideally

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suited to look at the anterior ligaments.

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Very much.

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But since many of you are going to

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look at projections like this with high

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resolution, I think you need to have

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some familiarity with these ligaments.

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So let's work our way forward.

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And right coming off the tip of the

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fibula, right there, and right there,

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is the most commonly torn ligament in the

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ankle, the anterior tibial, anterior talofibular

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ligament, also known as the ATAF or ATF.

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So it should attach to the talus, and it does.

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Now what about the calcaneofibular ligament?

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That one is a lot tougher for two reasons.

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Its course is more bizarre,

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and it's also a lot thinner.

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So you can spot portions of it in the

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coronal projection, but you usually don't

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see it in its entirety unless the foot is

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plantar flexed or your coronal is an oblique.

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We also have some much higher ligaments that

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consist of syndesmotic membranes.

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That'll be a story for another day, and we'll talk

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about the deltoid ligaments separately.

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But that really concludes our coronal evaluation

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of the posterior ligaments earlier in another

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vignette, and now the anterior ligaments,

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which admittedly are harder to see in this projection.

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Description

Faculty

Stephen J Pomeranz, MD

Chief Medical Officer, ProScan Imaging. Founder, MRI Online

ProScan Imaging

Tags

Musculoskeletal (MSK)

MSK

MRI

Foot & Ankle

Acquired/Developmental

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