MECHANICAL FACTORS IN MALREDUCED INTRA ARTICULAR FRACTURES OF DISTAL RADIUS

从对现有文献的调查中可以清楚地看出， 远端关节内骨折复位不良 桡骨和随后发生的桡腕骨关节病是 临床上很重要，但了解甚少。 并明确 对桡腕关节进行了非线性接触有限元分析， 一个非常适合详细调查的可行的计算选项 桡腕关节的局部组织应力 组合这些 点，有限元分析提供了有用的工具， 研究不精确还原的机械影响， 桡骨远端关节内骨折 的广泛目标 拟议的研究是开发一种经过充分验证的 桡腕关节的计算模型，与 以前开发的实验模型，将能够提供 桡骨远端严格接地改善指南 关节内骨折治疗技术。 的重点 功是初始关节内 桡骨远端骨折，随后复位不精确， 关节不一致和骨关节病的最终发作。 这 三维有限元模型将包括半径，两个 腕骨（月骨和舟骨）和关节 在这些骨头之间。 模型几何形状将从 冷冻切片机切片的照片先前从 尸体手腕

It is clear from a survey of current literature that the relationship between malreduced intra-articular fracture of the distal radius and the subsequent onset of radiocarpal osteoarthrosis is clinically important, yet poorly understood. It is also clear that nonlinear contact finite element analysis of the radiocarpal joint is a feasible computational option well-suited for detailed investigation of local tissue stresses in the radiocarpal joint. Combining these points, finite element analysis provides a useful tool for investigating the mechanical implications of imprecise reduction of intra-articular fracture of the distal radius. The broad objective of the proposed research is the development of a well-verified computational model of the radiocarpal joint, which, in concert with previously developed experimental models, will be capable of providing guidance toward rigorously grounded improvements in distal radius intra-articular fracture management techniques. The focus of this work is the mechanical relationship between initial intra-articular fracture of the distal radius, subsequent imprecise reduction of articular incongruency, and final onset of osteoarthrosis. This three-dimensional finite element model will include the radius, two carpal bones(the lunate and the scaphoid), and the articulations between these bones. The model geometry will be obtained from photographs of cryomicrotome sections previously obtained from a cadaver wrist.