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Anterior Cruciate Ligament on MRI: Axial View

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Knee anatomy.

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Cruciates ACL axial projection T2-weighted image.

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We've got our straight,

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but thinner than the PCL anterior cruciate ligament and

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we can follow it back to its over the top position,

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nice and straight, and black, and parallel to the inner edge

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or medial aspect of the lateral femoral condyle.

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This is how you diagnose

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a proximal anterior cruciate ligament tear.

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For if there is interruption at any point in this course as

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we follow it down or the fibers are wavy or displaced,

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you should be worried about ACL pathology of some kind,

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depending upon the morphology.

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Now, it is said that the posteromedial bundle, which is right here,

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I think I'll draw over it,

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it's the posteromedial bundle right there.

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And here's the anterolateral bundle right there.

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And then anteriorly, they're a little inseparable.

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This bundle is said to be a little bit

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grayer than the anterolateral bundle.

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Let's keep following them down to their fossa

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that sits just in front of the eminence of the tibial spines.

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There's the eminence of the tibial spines.

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Here is the insert region of the anterior cruciate ligament.

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And then in front of this,

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you'll see wispy and sometimes thicker linear structures that

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consist of either the transverse ligament of Winslow or the

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ligamentum mucosum, which attaches to the infrapatellar plica.

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Let's back it up a little bit and follow it back,

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nice and straight. Back to the inner wall,

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the lateral femoral condyle.

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And do not forget that the anterior cruciate ligament

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not seen so well in this projection,

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gives a few contributions to the anterolateral meniscus.

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Let's have a look at the coronal projection if you have time.

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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