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