题目：
脊柱骨性关节炎（）
A.常蔓延数个椎体，晚期增生明显，骨性融合成块
B.常累及多数椎骨，多同时伴有双骶髂关节病变。晚期韧带钙化呈"竹节样"，椎体无破坏
C.累及单个椎体，椎间隙正常，常有椎弓根破坏
D.椎体破坏，可有死骨，椎体压缩呈楔形，椎间隙变窄
E.骨质增生及间隙变窄，椎体边缘硬化，无骨质破坏
答案：
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