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首页> 外文会议>International Society for Computer Assisted Orthopaedic Surgery >In vivo evaluation of lateral plasty effect on ACL reconstruction
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In vivo evaluation of lateral plasty effect on ACL reconstruction

机译：体内评价对ACL重建的横向塑料效应

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Introduction: It has been widely accepted that anterior cruciate ligament (ACL) is the primary constraint to anterior displacement of tibia and the secondary restrain to internal/external (IE) and varus/valgus (W) rotations. For this reason the ACL reconstruction should control not only the AP translation but also IE and VV rotation[1,2]. Recently our institute has developed a surgical technique for ACL replacement consisting in an over the top single-bundle graft with additional lateral plasty, to better control rotatory instabilities. The aim of this study is to verify if the lateral plasty has an effective contribution in restoring of knee stability and, in particular, in the control of rotational laxities. In order to asses the efficacy of the technique we evaluated, intra-operatively, the kinematics of the joint, after each step of the surgical technique. These measurements permit to address if the contribution of the lateral plasty is statistically significant in controlling knee laxities. Materials and methods: To evaluate the joint laxity we used a custom navigation system consisting of an optical localizer and soft-ware developed at our institute for this purpose[3,4]. During intervention, reference frames were fixed on bones and a brief registration phase was performed through percutaneous digitization of bone reference points, in order to define reference systems of the femur and tibia. We studied 19 patients, with a mean age of 30 (range 21-38) years. Surgery consisted of an arthroscopic single-bundle over the top ACL reconstruction with lateral plasty performed by the same surgeon. During the intervention we computed the kinematics of the knee in three steps: after ligament harvesting, after single bundle insertion and fixation and after lateral plasty fixation.
机译：介绍：已被广泛接受前列十字韧带（ACL）是胫骨前置位移的主要约束，以及次级抑制到内部/外部（IE）和VALGUS（W）旋转。因此，ACL重建不仅应该控制AP翻译，而且还要控制IE和VV旋转[1,2]。最近，我们的研究所开发了一种用于ACL更换的手术技术，该技术包括在顶部单束移植物上的覆盖覆盖层，以更好地控制旋转稳定性。本研究的目的是验证横向塑料是否具有恢复膝关节稳定性的有效贡献，特别是在控制旋转松弛方面。为了判断我们在手术技术的每步进行了可操作地评估该技术的疗效，可操作地，关节的运动学。这些测量允许在控制膝盖松弛方面具有统计学意义的横向塑料的贡献来解决。材料和方法：评估关节松弛，我们使用了由在我们研究所开发的光学定位器和软件组成的自定义导航系统[3,4]。在干预期间，通过经皮的骨参考点经皮数字化进行参考框架，并通过经皮数字化进行短暂的登记阶段，以定义股骨和胫骨的参考系统。我们研究了19名患者，平均年龄为30（21-38分）。手术由带有相同外科医生的顶部ACL重建的关节镜单束组成。干预期间，我们计算了膝关节的运动学三个步骤：在韧带收获后，单束插入和固定后和横向塑料固定后。

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