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Lesson 30Tissue

The Meniscus Washers

Two shock absorbers inside your knee

Inside your knee, between the thigh bone and the shin bone, sit two C-shaped washers — the menisci. They're the reason your knee can twist, pivot, and absorb a landing without grinding.

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The menisci from above

Real anatomy picture coming soon

Real anatomy photo spot: the medial and lateral meniscus, C-shaped, sitting on the tibia

Two shock absorbers

The menisci are made of tough, rubbery fibrocartilage. The one on the inner side of your knee is the medial meniscus; the outer one is the lateral meniscus. They cup the rounded femur so it sits snugly on the flat tibia — like a cradle stopping a ball from rolling off a table.

Load spreaders

Every step you take sends your body weight through your knees. The menisci spread that load across a wider area and soak up shock like sponges. They also help your knee lock safely when you twist — as long as you twist gently and don't push too far!

Mr. Bones says: I'm a fictional skeleton, not a doctor! This is for learning and fun. If anything hurts, stop and tell a grown-up you trust.

Knowledge Check

1

How many menisci are in each knee?

2

What are they shaped like?

3

What material are the menisci made of?

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