Orthopedic Injury and Prevention - Classification of Ankle Sprains

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Classification of Ankle Sprains

Ankle sprains are classified based on the severity of the injury. They are given a grade of 1, 2 or 3.

  • Grade 1 sprains have slight stretching and some damage to the fibers of the ligament.

  • Grade 2 sprains have partial tearing of the ligament. If the ankle joint is examined and moved in certain ways, abnormal looseness of the ankle joint is found.

  • Grade 3 sprains have a complete tear of the ligament. If the provider pulls or pushes on the ankle joint in certain movements, gross instability occurs.
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