BACKGROUND:Fixation of an anterior cruciate ligament graft at the joint line with an interference screw restores anterior laxity better than low-stiffness distal fixation with double staples and sutures tied to a post at implantation in porcine bone. HYPOTHESIS:Fixation of an anterior cruciate ligament graft with a high-stiffness distal fixation device restores anterior laxity and knee stiffness as well as joint line fixation with an interference screw in human bone. STUDY DESIGN:Controlled laboratory study. METHODS:Eleven cadaveric knees with foam reinforcement of the bone were reconstructed with a double-looped tendon graft and fixed with an interference screw and 3 high-stiffness methods of fixation (tandem washer, WasherLoc, and WasherLoc with bone dowel). Anterior laxity at 225 and 110 N of anterior load and knee stiffness were measured at 0 degrees , 30 degrees , 60 degrees , 90 degrees , and 120 degrees of flexion with a 6 degrees of freedom load application system. RESULTS:The increase in anterior laxity and knee stiffness with the interference screw was not significantly different from that with the high-stiffness distal methods. CONCLUSION:In the human knee, the use of high-stiffness fixation devices placed distal to the joint line restored anterior laxity and knee stiffness as well as joint line fixation with an interference screw at implantation. CLINICAL RELEVANCE:The stiffness provided by each method of fixation should be considered along with the length of the graft when determining anterior laxity and knee stiffness.

译文

背景:用十字钉将前交叉韧带移植物固定在猪骨内时,比用双钉和缝线将低刚度远侧固定在柱子上的方式固定在关节线上的前交叉韧带要好。
假设:用高刚度远侧固定装置固定前交叉韧带移植物可恢复前松弛和膝关节僵硬,并用干涉螺钉固定人骨中的关节线。
研究设计:受控实验室研究。
方法:采用双环肌腱移植物重建11具泡沫骨的尸体膝盖,并用干涉螺钉固定,并采用3种高刚度固定方法(串联垫圈,WasherLoc和WasherLoc结合骨钉)。使用6自由度负荷施加系统,分别在0度,30度,60度,90度和120度屈曲度下分别测量前负荷在225和110 N时的前松弛度和膝部僵硬度。
结果:干预螺钉的前松弛度和膝部僵硬度的增加与远侧高硬度方法无明显差异。
结论:在人膝中,使用高刚性固定装置放置在关节线远端,可恢复前松弛和膝关节僵硬,以及在植入时用干涉螺钉固定关节线。
临床相关性:在确定前松弛和膝关节僵硬时,应考虑每种固定方法所提供的僵硬程度以及移植物的长度。

+1
+2
100研值 100研值 ¥99课程
检索文献一次
下载文献一次

去下载>

成功解锁2个技能,为你点赞

《SCI写作十大必备语法》
解决你的SCI语法难题!

技能熟练度+1

视频课《玩转文献检索》
让你成为检索达人!

恭喜完成新手挑战

手机微信扫一扫,添加好友领取

免费领《Endnote文献管理工具+教程》

微信扫码, 免费领取

手机登录

获取验证码
登录