...状面及轴状面上均呈中立位，从过去 30年骨科植入物中得到的经验，其中昀主要的问题就是邻近节段的退变（ adjacent degeneration），纤维环较大缺失及椎间高度较明显的塌陷均是髓核置换的禁忌证，前方剪切力亦增加关节突受力，L5-S1是一个例外。 明升88
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研究目的：测定腰椎融合术后邻近节段退变对临床治疗效果的影响。
Objective. To determine the impact of the adjacent segment degeneration (ASD) on the clinical outcome after lumbar fusion.
目的：评价在轻度退变的邻近节段行单纯后外侧植骨预防腰椎融合术后邻近节段退变的临床疗效，探讨其适应症的选择。
Object: to evaluate the clinical effect of posterolateral bone graft fusion to pretend the adjacent segment degeneration after lumbar fusion and discuss the indication.
关于邻近节段退变的治疗，若融合术后患者的症状与邻近节段退变的病理相符时，外科干预强调充分减压和扩大融合节段，但是结果并不确切。
Adequate decompression and extension of the fusion could be performed if the symptoms were adjustable with the pathology of adjacent segment degeneration, but outcomes were not exact.
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