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Anatomy of the Popliteal Fossa

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So the popliteal fossa is another area that we need

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to consider in the knee, and it's often a neglected area.

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Uh, this is a fat filled loss

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and shaped region at the back of the knee that contains

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a number of important neural, lymphatic

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and vascular structures.

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The main thing that we are gonna see in this area are a

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number of different cysts and masses.

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And what I wanna do in the next 45 minutes is review the

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anatomy in here, the boundaries of this area,

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and, uh, some of the, uh, pathology that you can see, uh,

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in the, um, area of the pop fossa.

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So starting at the deep layer, we're looking up high.

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The top of the lozenge is gonna be formed by the hamstrings

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with the biceps, femoral laterally,

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and the semi, uh, memb noses medially.

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The semi tendinosis by this point has already, uh,

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converted, uh, into a tendon.

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And as we go a little bit more distally, the boundaries

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that we're going to see here deep

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to this is gonna be the plantars and medial and lateral.

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We're going to have our gastroc anemia.

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And you can see that by the time I'm coming down,

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that the space has already become quite narrow in this

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patient who's very, very muscular in terms

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of the deep portion.

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We have the joint capsule

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and the oly popliteal ligament here coming from semi

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menos forming the floor of the popliteal fossa.

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Inside that, of course, we're going

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to be into the joint, uh, proper.

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And then as we go further down over here,

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we're gonna have the bone and the popple, uh, tendon

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and popplet muscle forming the floor of the popliteal fossa.

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So it's not a very big area that we need to, uh, look at,

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but it's important that we include this on our checklist.

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And I know, you know, most of the macros

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and everything that people use don't have anything

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to say about the popliteal fossa.

Report

Faculty

Donald Resnick, MD

Professor Emeritus, Department of Radiology

University of California, San Diego

Mini N. Pathria, MD, FRCP(C)

Division Chief, Musculoskeletal Imaging

University of California San Diego

Eric Y. Chang, MD

Adjunct Professor, Radiology

University of California, San Diego

Brady K. Huang, MD

Clinical Professor of Radiology

UC San Diego Medical Center

Tags

Musculoskeletal (MSK)

MRI

Knee