枕骨大孔

Methods26 cases of foramen magnum tumor underment microsurgical treatment.to deseribe them clinical、operation and treatment result.

对应用显微外科手术治疗的26例枕骨大孔区肿瘤病例进行分析，探讨其临床特点、手术方法及治疗效果。

Microsurgical treatment;Tumor of the foramen magnum

枕骨大孔区肿瘤；显微手术治疗

KEYWORDS: cervical spinal motion; Chiari malformation; foramen magnum decompression; syringomyelia.

要害词：颈椎运动；枕骨大孔减压术；脊髓空洞症

Chiari malformations are a spectrum of anomalies associated with a reduction of posterior cranial fossa volumes and CSF while conserving overall brain volume. Chiari I malformations refer to a greater than 5 mm herniation of the cerebellar tonsils down through the foramen magnum.

chiari畸形是由于后颅窝容积及脑脊液减小而与正常的脑容积不匹配造成的一系列的异常病变的统称。chiariI型畸形是指小脑扁桃体下疝超过枕骨大孔5mm以上。

There was no diflhrence between the two groups in surgical intervention and postoperative complication.Conclusions In order to decrease the risk of neurological complication,foramen magnum decompression (include C.posterior arch)is necessary before instrumentation and correction of scoliosis in Chiari malformation patients with syringomyelia and scoliosis as the first symptom.

Chiari畸形以脊柱侧凸为首发症状，多合并脊髓空洞，发病年龄轻，其临床症状和神经损害体征不明显，治疗策略上主张早期进行枕颈部枕骨大孔区减压和硬脑膜重建成形手术。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。