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A sprain, also known as a torn ligament, is damage to one or more ligaments in a joint, often caused by trauma or the joint being taken beyond its functional range of motion. The severity of sprain ranges from a minor injury which resolves in a few days to a major rupture of one or more ligaments requiring surgical fixation and a period of immobilisation. Sprains can occur in any joint but are most common in the ankle and wrist.〔() Retrieved on 2010-02-16〕 == Signs and symptoms == * Pain * Swelling * Bruising * Decreased ability to move the limb * If a ligament ruptures, one may hear a popping sound * Difficulty using the affected extremity 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「sprain」の詳細全文を読む スポンサード リンク
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