In sprain grading, which grade corresponds to a severe sprain?

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Multiple Choice

In sprain grading, which grade corresponds to a severe sprain?

Explanation:
In sprain grading, how damaged the ligament is determines how unstable the joint becomes. A mild sprain involves a stretch (Grade I) with little to no instability; a moderate sprain is a partial tear (Grade II) with some laxity; a severe sprain is a complete rupture of the ligament with marked instability, often with swelling and difficulty bearing weight. Some schemes include a Grade IV for injuries with bone avulsion or dramatic bone involvement, but for purely ligamentous sprains, Grade III is considered the most severe form. Therefore, the option describing a complete tear with significant instability best fits a severe sprain.

In sprain grading, how damaged the ligament is determines how unstable the joint becomes. A mild sprain involves a stretch (Grade I) with little to no instability; a moderate sprain is a partial tear (Grade II) with some laxity; a severe sprain is a complete rupture of the ligament with marked instability, often with swelling and difficulty bearing weight. Some schemes include a Grade IV for injuries with bone avulsion or dramatic bone involvement, but for purely ligamentous sprains, Grade III is considered the most severe form. Therefore, the option describing a complete tear with significant instability best fits a severe sprain.

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