对比制槽法与传统方法取出滑丝螺钉的临床疗效，探讨一种取出滑丝螺钉的新方法。

前瞻性收集河北医科大学第三医院2012年9月至2017年1月，收治的内固定取出患者1 552例，其中符合纳入及排除标准的患者共132例，通过随机数字表随机分为试验组（n=66）和对照组（n=66）。试验组采用制槽法，对照组采用传统方法，从手术成功率、平均手术时间、平均术中出血量及平均切口愈合时间四个方面，进行试验组及对照组的对照研究分析。

本研究所纳入的132例患者均未出现神经血管损伤、术后再骨折等并发症。试验组手术成功率（98.61%）和对照组手术成功率（98.59%）差异无统计学意义（χ²=0.001，P=0.992），试验组的平均手术时间为（32±6）min、平均术中出血量为（154±37）ml、平均切口愈合时间为（11.8±1.1）d，均少于对照组，差异有统计学意义（U=143，t=6.463，U=1438，P<0.05）。

制槽法减少了手术操作步骤从而缩短了手术时间，不会产生骨质及软组织的进一步损伤，从而减少了术中出血量及切口愈合时间，适用于单个或多个螺钉滑丝的情况，为临床上解决滑丝螺钉的问题提供了一种简单实用、安全有效的新方法。

To compare the clinical efficacy of the slide wire screw with the grooved method and the traditional methods, and to explore a new method to remove the slide wire screw.

A prospective collection of 1 552 patients with internal fixations from September 2003 to January 2017 in the third hospital of Hebei Medical University was conducted. Among them, 132 patients who met the inclusion and exclusion criteria were randomly divided into experimental group (n=66) and controlled group (n=66) by random number table. The experimental group used the grooved method, and the controlled group used the traditional methods. The experimental group and the controlled group were compared and analyzed from four aspects: the successful rate of surgery, the average operational time, the average intraoperative blood loss and the average incision healing time.

All 132 patients included in the study had no complications such as neurovascular injury and postoperative fracture. There was no significant difference in the successful rate (98.61%) between the experimental group and the success rate (98.59%) in the controlled group. The mean operative time [(32±6) min], mean intraoperative blood loss [(154±37) ml], and mean incision healing time [(11.8±1.1) d] were lower in the experimental group than in the controlled group, the difference was statistically significant (U=143, t=6.463, U=1438, P<0.05).

The grooved method reduces the surgical procedure and shortens the operational time. It does not cause further damage to the bone and soft tissue, thus reducing the amount of intraoperative blood loss and wound healing time. It is suitable for single or multiple sliding screws. It provides a simple, practical, safe and effective new method for solving the problem of the sliding screws.