reduction sleeve

Comparison practice proves that application of the new cot sleeve results in good effect in general, viz, cost and time economy, consumption reduction, stable quality, long service life, less general investment.

说明实际使用该新型并条胶辊套筒综合效果好，具有省工省时、降低消耗、质量稳定、使用寿命长、总投资少等优点。

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[ Method] A total of 86 cases of non-Chance fractures were instrumented with pedicel screw system generally. The positive and negative threaded sleeve were installed and circumrotated to obtain the compressed posterior column and reduction, then the screw cap was installed.

[方法]对86例非Chance骨折常规置入椎弓根螺钉后，安装并旋转正反螺纹套筒，使后柱加压，促使骨折复位，复位后安装螺帽及横连杆。

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