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Cervical Spondylotic Myelopathy Secondary to Dropped Head Syndrome: Report of a Case and Review of the Literature

机译:宫颈脊椎肌蛋白肌钙分离,滴眼综合征:报告和文学审查

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摘要

The dropped head syndrome (DHS) is a disabling condition caused by severe weakness of the neck extensor muscles causing progressive reducible kyphosis of the cervical spine and the inability to hold the head up. Weakness can occur in isolation or in association with a generalized neuromuscular disorder. Isolated cases are owed to the late onset of noninflammatory myopathy designated as INEM, where persistent chin to chest deformity may gradually cause or aggravate preexisting degenerative changes of the cervical spine and ultimately result in myelopathy. In review of the literature, we could find only 5 cases, with no unique guidelines to address the management of these two concomitant pathologies. Herein, a 69-year-old man who had developed cervical myelopathy 2 years after being affected by isolated dropped head syndrome is presented. Chin to chest deformity and cervical myelopathy were managed through three-level anterior cervical discectomy and fusion (ACDF) combined with decompressive cervical laminectomy and stabilization with C2 to C7 pedicle screw-rod construct. At 4-month follow-up, despite recovery in patient’s neurological status, flexion deformity reappeared with recurrence of dropped head due to C7 pedicle screws pull-out. However, this was successfully managed with extension of the construct to the upper thoracic levels.
机译:被丢弃的头综合征(DHS)是由颈部伸肌导致颈椎逐步还原后凸和无法保持抬头的严重弱点致残条件。弱点可单独发生或与广义神经肌肉病的关联。个别病例被拖欠到非炎症性肌病的发病后期指定为INEM,在持续的下巴到胸部畸形可能逐渐导致或加重现有的颈椎退行性改变,最终导致脊髓病。在文献的回顾,我们可以发现只有5例,无独特的指引,以解决这两个伴随疾病的管理。在这里,谁曾2年后开发的脊髓型颈椎病一名69岁的男子正受到孤立下降头综合征提出。下巴到胸部畸形和脊髓型颈椎病是通过三级前与减压椎板切除颈和稳定用的C2至C7椎弓根螺钉杆构建体组合的颈椎椎间盘切除和融合(ACDF)管理。在4个月的随访中,尽管患者的神经功能状态的恢复,屈曲畸形再现与下降头的复发由于C7椎弓根螺钉拔出。然而,这是成功地构建到上胸段水平的扩展程序管理。

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