Bassi P, Corona C, Contri P, Paiocchi A, Loiero M, Mangoni A
Department of Neurology, University of Milan, L. Sacco Hospital, Italy.
Eur Neurol. 1992;32(4):238-43. doi: 10.1159/000116832.
A series of 8 cases operated on for symptomatic basilar impression associated with occipitalization of the atlas is reported (with or without atlantoaxial dislocation). Symptoms of onset (such as the frequent association between nuchal pain and vertigo) are emphasized and analyzed in relation to the pathogenetic mechanism that underlies the multiform symptomatology of the basilar impression. The diagnostic workup for basilar impression foresees X-rays, magnetic resonance imaging and computed tomography. The most important diagnostic problem is that of considering the possible existence of such a pathology in the presence of very common symptoms such as nuchal pain and vertigo. The surgical treatment has certainly been useful both to improve and to stabilize the symptomatology mainly when there is atlantoaxial dislocation. In fact in these cases the symptomatology is more severe and progressive for the alteration of the transverse ligament of the atlas secondary to abnormal mechanical stimuli.
报告了一系列8例因症状性基底凹陷合并寰椎枕化而接受手术治疗的病例（伴有或不伴有寰枢椎脱位）。强调并分析了发病症状（如颈部疼痛与眩晕的频繁关联）与基底凹陷多种症状背后的发病机制之间的关系。基底凹陷的诊断检查包括X线、磁共振成像和计算机断层扫描。最重要的诊断问题是在出现颈部疼痛和眩晕等非常常见的症状时，考虑是否可能存在这种病理情况。手术治疗肯定有助于改善和稳定症状，主要是在存在寰枢椎脱位的情况下。事实上，在这些病例中，由于异常机械刺激导致寰椎横韧带改变，症状更为严重且呈进行性发展。
