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.
Stephen J Pomeranz, MD
Chief Medical Officer, ProScan Imaging. Founder, MRI Online
ProScan Imaging
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