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flexible joint

flexible joint ARCHIT

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However, owls possess strong legs, powerful talons, and toes with a unique flexible joint as they use their feet to catch prey. en.wikipedia.org

The third metatarsal has no clear condyles at its lower end, resulting in a more flexible joint, allowing for a modicum of horizontal movement. en.wikipedia.org

The talus forms a considerably more flexible joint in mammals than it does in reptiles. en.wikipedia.org

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