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Anterior Cruciate Ligament Anatomy: Coronal View

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Knee anatomy.

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Cruciates ACL coronal projection.

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Starting in the back posteriorly.

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There is no ACL because we're too far posterior.

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But for a comparison, this is the posterior cruciate ligament origin,

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along the tibial notch below the tibial plateau.

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The anterior cruciate ligament on the next slice

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should appear here along the medial inner wall of the lateral femoral condyle.

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Let's see if it does.

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It certainly does.

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It's a long linear structure composed of two bundles.

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Let's continue following the anterior cruciate

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ligament that looks a little bit like a water slide.

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Pay no attention to the menisco-femoral

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ligament of wrisberg that sits directly adjacent to and underneath it.

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There's our water slide, nice and straight.

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Maybe a little bit of undulation,

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but relatively straight with parallel fibers, the lateral and the medial bundle.

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Posteromedial, anterolateral, coming down together in this

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diagram inseparable and continue to follow our water slide down, for the coronal

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projection may bail you out when you have a distal injury that is obscured by blood

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or an avulsed tibial spine, or by simple edema in the sagittal projection.

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So here's our water slide compared to our rounded appearance of the posture cruciate

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ligament, which also has two bundles, by the way.

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Let's keep following it.

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It's starting to spread out.

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As we pass the middle third, it's fanning,

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inserting between the tibial spines, closer to the medial tibial spine and continues

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on to insert anterior to the tibial spines.

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Still fanned out.

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And then finally, we've lost it.

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So if we go back one,

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we see that it's located between the anterior horns of the menisci.

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We go forward one, and what's in front of it?

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The transverse meniscal ligament of Winslow,

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and a thick fibro elastic band that communicates

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sometimes with the infrapatellar plica called the ligamentum mucosum.

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Don't forget to look at the other accompanying companion vignettes.

Report

Description

Faculty

Stephen J Pomeranz, MD

Chief Medical Officer, ProScan Imaging. Founder, MRI Online

ProScan Imaging

Tags

Trauma

Musculoskeletal (MSK)

MRI

Knee

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