Context: Tethered cord syndrome is a progressive condition usually diagnosed early in life, and leads to a diversity of manifestations including neurologic, urologic, and orthopedic dysfunction.

Findings: We report two cases of tethered cord syndrome associated with a unilaterally absent sural sensory response on nerve conduction studies while other causes of this finding being excluded.

Conclusion/clinical relevance: We believe that this finding is caused by a selective injury of sensory fibers at the level or distal to the dorsal root ganglia.

中文翻译：

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脊髓栓系综合征中无腓肠反应

背景：脊髓栓系综合征是一种进行性疾病，通常在生命早期被诊断出来，并导致多种表现，包括神经系统、泌尿系统和骨科功能障碍。

结果：我们报告了两例与神经传导研究中单侧缺失的腓肠感觉反应相关的脊髓栓系综合征病例，同时排除了这一发现的其他原因。

结论/临床相关性：我们认为这一发现是由背根神经节水平或远端感觉纤维的选择性损伤引起的。