4.2 Article

Biomechanical Comparison of a Notched Head Locking T-Plate and a Straight Locking Compression Plate in a Juxta-Articular Fracture Model

出版社

GEORG THIEME VERLAG KG
DOI: 10.1055/s-0040-1719166

关键词

T-plate; plate strain; locking compression; working length; juxta-articular; fracture model

资金

  1. DePuy Synthes

向作者/读者索取更多资源

The study compared the biomechanical properties of a 2.0mm locking compression notched head T-plate (NHTP) and 2.0mm straight locking compression plate (LCP) in a simple transverse juxta-articular fracture model. Results showed that the LCP was stiffer than the NHTP and had lower plate strain. In this experimental model, a 2.0mm LCP with two screws in the short fragment was significantly stiffer than a 2.0mm NHTP with three screws in the short fragment. Extending the working length significantly reduced construct stiffness and increased plate strain.
Objective This investigation compared the biomechanical properties of a 2.0mm locking compression notched head T-plate (NHTP) and 2.0mm straight locking compression plate (LCP), in a simple transverse juxta-articular fracture model. Study Design Two different screw configurations were compared for the NHTP and LCP, modelling short (configuration 1) and long working length (configuration 2). Constructs were tested in compression, perpendicular and tension non-destructive four point bending and torsion. Plate surface strain was measured at 12 regions of interest (ROI) using three-dimensional digital image correlation. Stiffness and strain were compared between screw configurations within and between each plate. Results The LCP was stiffer than the NHTP in all three planes of bending and torsion ( p <0.05). The NHTP had greater strain than the LCP during compression bending and torsion at all ROI ( p <0.0005). The short working length was stiffer in all three planes of bending and in torsion ( p <0.05) than the longer working length for both plates. The long working length showed greater strain than the short working length at most ROI. Conclusion In this experimental model, a 2.0mm LCP with two screws in the short fragment was significantly stiffer and had lower plate strain than a 2.0mm NHTP with three screws in the short fragment. Extending the working length significantly reduced construct stiffness and increased plate strain. These findings may guide construct selection.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.2
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据