脊髓损伤由什么引起的？ 脊髓损伤是因为什么引起的？
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脊柱分颈椎、胸椎、腰椎，脊柱脊髓损伤的病因包括：1、颈椎损伤常由颈椎间盘的退变引起，即椎间盘长期使用，劳损失水后脱到椎管，压迫脊髓，造成脊髓缺血而产生损伤。还有外伤造成脊髓的急性损伤，较轻为骨折，严重可产生瘫痪症状；2、胸椎损伤主要由韧带的钙化引起，包括前纵韧带钙化、后纵韧带钙化等，也可由外伤引起；3、腰椎损伤最常见是由椎间盘退变引起。
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