A knee sprain is an injury to the ligaments surrounding the knee that keep it anchored to the upper and the lower part of the leg. A ligament is a strong band of fibrous tissue surrounding a joint. A knee joint is surrounded by four different ligaments - Anterior Cruciate, Posterior Cruciate, Medial Cruciate and Lateral Cruciate. The cure for a knee sprain depends on the type and extent of the tear in these ligaments.
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