Fibula
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- What it is
- Slender lateral bone of the leg with a knob-like head below the knee and a lower end forming the lateral malleolus of the ankle.
- Function
- Carries little weight (≈ 15%) but anchors leg muscles and stabilises the ankle mortise.
- Size
- ≈ 40 cm long, 1–1.5 cm thick
- Clinical note
- The common fibular nerve winds around its neck, where it is easily injured, causing foot drop.