BACKGROUND The present study is to highlight the challenges in managing cervical spine injuries in toddlers (less than 4 years of age) without neurological deficit. Cases of unilateral cervical C4-C5 facet dislocation in toddlers are very rare. CASE PRESENTATION A 3-year-old girl suffered cervical spine injury after a motor vehicle collision with unilateral C4-C5 facet dislocation without neurological deficit. Magnetic resonance imaging (MRI) showed no spinal cord injury, Frankel grade E. Initial management was cervical spine protection. Definite treatment and complication were discussed with the patient's parents before closed reduction maneuver with minerva cast was applied under sedation. The patient showed no complication after closed reduction and the cervical spine had aligned well in radiographs. The minerva cast was removed at 8 weeks, at which point neck muscle stretching rehabilitation program started. At one-year follow up, the child was asymptomatic, had full active cervical motion and good function. In radiographs, the cervical spine had normal alignment and was healed. CONCLUSIONS Unilateral cervical facet dislocation in toddlers is very rare. Closed reduction maneuver and the minerva cast applied were optional in this case. The parents were highly satisfied with the effective treatment and outcome.

中文翻译：

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小儿学步儿童急性外伤性单侧C4-C5面脱位

背景技术本研究旨在强调在没有神经系统缺陷的幼儿（小于4岁）中处理颈椎损伤的挑战。幼儿单侧颈C4-C5面脱位的病例非常少见。病例介绍一名3岁女孩在机动车辆碰撞时单侧C4-C5小关节脱位，无神经功能缺损，其颈椎受伤。磁共振成像（MRI）显示无脊髓损伤，弗兰克尔E级。最初的治疗是颈椎保护。在镇静下应用密涅瓦石膏进行闭合复位手术之前，与患者的父母讨论了明确的治疗方法和并发症。闭合复位后患者未显示并发症，X线片显示颈椎对齐良好。密涅瓦演员表在第8周被删除，这时开始进行颈部肌肉拉伸康复程序。在一年的随访中，这名儿童无症状，具有完全活跃的颈椎运动能力和良好的功能。在X射线照片中，颈椎的排列正常，并且已he愈。结论幼儿单侧颈椎小关节脱位非常罕见。在这种情况下，可以采用封闭式减速操纵和密涅瓦施法。父母对有效的治疗和结果感到高度满意。在这种情况下，可以采用封闭式减速操纵和密涅瓦施法。父母对有效的治疗和结果感到高度满意。在这种情况下，可以采用封闭式减速操纵和密涅瓦施法。父母对有效的治疗和结果感到高度满意。