Mushroom joint

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A mushroom joint is a classic articulation point, consisting of a “mushroom-shaped” peg that inserts into a hole and allows for movement in a circular direction around the peg. If there is nothing to stop the limb, this type of joint allows for 360° of motion. This used to be the standard joint for all parts of an action figure, but in today’s market it is most often found at a figure’s waist or wrists.

Synonyms:
Peg joint
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