Lipson S J
J Bone Joint Surg Am. 1985 Apr;67(4):593-7.
Posterior atlanto-axial subluxation, which is uncommon and usually is considered a benign condition, was associated with cervical myelopathy in four patients with rheumatoid arthritis. The cause of the myelopathy appeared to be posterior kinking of the spinal cord without demonstrable compression. Contrast-enhanced sagittal imaging or computerized tomographic sagittal reconstruction provided the best means of demonstrating the abnormal configuration of the spinal cord. Halo traction and occipitocervical fusion yielded satisfactory results in all four patients after follow-up of one to two years. We developed a method to provide rigid fixation of an occipitocervical fusion in which a corticocancellous iliac-bone graft was backed with metal mesh, wired in place, and reinforced with methacrylate.
寰枢椎后脱位并不常见，通常被认为是一种良性疾病，在4例类风湿性关节炎患者中与颈椎脊髓病相关。脊髓病的原因似乎是脊髓向后扭结而无明显压迫。增强矢状位成像或计算机断层扫描矢状位重建是显示脊髓异常形态的最佳方法。在随访1至2年后，4例患者采用头环牵引和枕颈融合术均取得了满意的效果。我们开发了一种方法来提供枕颈融合的坚固固定，即使用金属网支撑髂骨皮质松质骨移植块，用金属丝固定到位，并用甲基丙烯酸酯加固。
