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ulna and radius

Rabbit ulna and radius (forearm bones)

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The ulna and radius make up the forearm or the lower part of an animal’s front leg. The ulna has a peculiar shape. It has a hinge joint, and a projection behind the joint which is where the triceps muscle attaches. The radius has a gliding joint at the wrist end, allowing you to turn your hand round. A gliding joint has a more or less flat surface where the bones meet.

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