Neurosurgical Clinic, AOUP "Paolo Giaccone", Post Graduate Residency Program in Neurologic Surgery, Department of Biomedicine Neurosciences and Advanced Diagnostics, School of Medicine, University of Palermo, Palermo, Italy.
Department of Neurosurgery, Cannizzaro Hospital, Trauma Center, Gamma Knife Center, Catania, Italy.
World Neurosurg. 2022 Aug;164:243-250. doi: 10.1016/j.wneu.2022.05.012. Epub 2022 May 16.
The ischemia/reperfusion mechanism is believed to be responsible for parenchymal damage caused by temporary hypoperfusion and worsened by the subsequent attempt of reperfusion. This represents a true challenge for physicians of several fields, including neurosurgeons. A limited number of papers have shed the light on a rare pathologic condition that affects patients experiencing an unexplained neurologic deficit after spine surgery, the so-called "white cord syndrome." This entity is believed to be caused by an "ischemia/reperfusion" injury on the spinal cord, documented by a postoperative intramedullary hyperintensity on T2-weighted magnetic resonance imaging sequences. To date, the cases of white cord syndrome reported in literature mostly refer to cervical spine surgery. However, the analysis of several reviews focusing on spine surgery outcome suggests postoperative neurologic deficits of new onset could be charged to a mechanism of ischemia/reperfusion, even if the physiopathology of this event is seldom explored or at least discussed. The same neuroradiologic finding can suggest mechanical damage due to inappropriate surgical manipulation. On this purpose, we performed a systematic review of the literature with the aim to identify and analyze all the factors potentially contributing to ischemic/reperfusion damage of the spinal cord that may potentially complicate any spinal surgery, without distinction between cervical or thoracic segments. Finally, we believe that postoperative neurologic deficit after spinal surgery constituting the "white cord syndrome" could be under-reported; both neurosurgeons and patients should be fully aware of this rare but potentially devasting complication burdening cervical and thoracic spine surgery.
缺血/再灌注机制被认为是导致短暂低灌注引起的实质损伤的原因,而随后的再灌注尝试会使损伤恶化。这对包括神经外科医生在内的多个领域的医生来说都是一个真正的挑战。少数文献已经阐明了一种罕见的病理状况,即脊柱手术后患者出现不明原因的神经功能缺损,即所谓的“白索综合征”。这种疾病被认为是脊髓的“缺血/再灌注”损伤引起的,在 T2 加权磁共振成像序列上表现为术后脊髓内高信号。迄今为止,文献中报道的白索综合征病例大多与颈椎手术有关。然而,对几项重点关注脊柱手术结果的综述进行分析表明,新出现的术后神经功能缺损可能与缺血/再灌注机制有关,尽管这种事件的病理生理学很少被探讨或至少被讨论。同样的神经影像学发现可能提示由于手术操作不当引起的机械损伤。为此,我们对文献进行了系统回顾,旨在确定和分析所有可能导致脊髓缺血/再灌注损伤的潜在因素,这些因素可能使任何脊柱手术复杂化,而不分颈椎或胸椎。最后,我们认为脊柱手术后的神经功能缺损构成了“白索综合征”,可能报告不足;神经外科医生和患者都应该充分意识到这种罕见但潜在的灾难性并发症会使颈椎和胸椎手术复杂化。
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