An 18-year-old male presented with a 6-month history of paresthesia of both arms and legs after a minor neck trauma. CT scan revealed a partial aplasia of the anterior and posterior arches of the C1 vertebra resulting in a split atlas. MRI showed an intramedullary high-signal area. We performed a posterior decompressive laminectomy and occipitocervical fusion. The bony defect into the posterior arch was replaced by a connective tissue cord, resulting in a compression of the dural sheath. The symptoms recovered completely 1 month after surgery. Knowledge of this rare malformation is crucial to the correct management of these cases.
Case Rep Orthop Res 2021;4:121–130

中文翻译：

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由分裂图谱异常引起的脊髓型颈椎病：病例报告

一名 18 岁男性在颈部轻微外伤后出现双臂和双腿感觉异常 6 个月。CT 扫描显示 C1 椎骨的前后弓部分发育不全，导致寰椎分裂。MRI显示髓内高信号区。我们进行了后路减压椎板切除术和枕颈融合术。后弓的骨缺损被结缔组织索取代，导致硬膜鞘受压。术后1个月症状完全恢复。了解这种罕见的畸形对于正确管理这些病例至关重要。
案例代表 Orthop Res 2021；4:121–130