Krödel A, Refior H J, Westermann S
Orthopädische Klinik und Poliklinik, Klinikum Grosshadern, Ludwig-Maximilians-Universität, München, Federal Republic of Germany.
Arch Orthop Trauma Surg. 1990;109(1):30-3. doi: 10.1007/BF00441906.
Chronic inflammatory diseases, such as chronic polyarthritis or spondylarthritis ankylopoietica, can occasionally lead to vertebral instabilities of the occipitoatlantal or atlantoaxial level, requiring some form of stabilizing operation. By means of functional magnetic resonance imaging, i.e., with the cervical spine at its maximal range of flexion and extension, performed on 11 patients suffering from an instability at the above level, it was possible to demonstrate not only the extent of synovial tissue, but also how this sometimes excessive soft-tissue growth hinders an adequate reduction of the subluxated vertebrae. The importance of this investigation lies in the fact that the necessary operation can be planned appropriately. As such, three patients required a decompressing operation entailing resection of the posterior arch of the atlas, widening of the foremen magnum, or both.
慢性炎症性疾病，如慢性多关节炎或强直性脊柱炎，偶尔会导致枕寰关节或寰枢关节水平的椎体不稳定，需要某种形式的稳定手术。通过对11例上述水平不稳定患者进行功能磁共振成像，即在颈椎最大屈伸范围内成像，不仅可以显示滑膜组织的范围，还能显示这种有时过度的软组织生长如何阻碍半脱位椎体的充分复位。这项检查的重要性在于能够适当地规划必要的手术。因此，有3例患者需要进行减压手术，包括切除寰椎后弓、扩大枕大孔或两者同时进行。
