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Syndesmosis Definition

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Updated November 13, 2013

Definition: A syndesmosis is an joining of two adjacent bones which are tightly bound together by a ligament. The syndesmosis of the ankle is made up of anterior tibiofibular ligament, interosseous ligament, and posterior-fibular ligaments.

Following trauma to the ankle, such as an ankle fracture or high ankle sprain, the syndesmotic joint can become unstable and painful. Surgery may be needed to stabilize the syndeosmotic joint to allow these ligaments to properly heal.

Also Known As: Syndesmotic Injury

Common Misspellings: Syndosmosis

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