In this procedure, the provider surgically fixes all three fractured malleoli of the ankle, the medial, lateral, and posterior malleoli. He secures the malleoli with plates, screws, wires, or pins at two malleoli, the medial and lateral malleoli, but he applies no fixation to the posterior malleolus. The provider generally performs this procedure on unstable fractures that require fixation for additional support.
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