KINEMATICS AND STABILITY OF THE ARCH OF THE FOOT

足弓的运动学和稳定性

• 批准号: 2081487
• 负责人: HAROLD B KITAOKA
• 金额: $ 9.52万
• 依托单位: MAYO CLINIC ROCHESTER
• 依托单位国家: 美国
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-09-01 至 1997-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2081487
• 关键词: biomechanics; foot; human tissue; joint ligament; orthopedics; tendons

It is estimated that 74,000,000 people in the United States have foot problems. The most common foot disorder in patients of all ages is pes planus, or flat foot which may be a painful, disabling condition. There is some debate regarding the optimum surgical treatment method because of shortcomings of standard arch reconstruction procedures. The main goal of the proposed investigation is to address problems associated with reconstructive operations of the arch of the foot. More specifically, two studies are planned to increase the basic understanding of foot mechanics by analyzing the kinematics and stability of the arch, and a third study is planned to apply results toward the development of arch reconstruction procedures. Study l : Three-dimensional kinematics and joint contact behavior of the normal arch of the foot will be studied in vitro using a magnetic tracking system under physiological loading conditions. Results will be used to test the hypothesis. H1: Physiologic loading of the arch results in significant displacement of all the joints constituting the arch and significant changes in joint contact characteristics. Study 2: Cadaveric foot specimens will be tested under different loading conditions with sequential sectioning of six structures stabilizing the arch to create arch instability (pes planus or flat foot deformity). Anatomic elements will be sectioned in different sequences and the relative contribution of each structure to stability determined. Two hypotheses (H2 and H3) will be tested. H2: Superficial deltoid and talocalcaneal ligaments are the most important static structures responsible to maintain arch stability. H3: Total joint contact area and contact distribution at talonavicular and subtalar joints are significantly altered in pes planus. Study 3: Using data from first and second studies, arch reconstruction operations will be developed and compared based on kinematics and stability. Two hypotheses will be tested (H4 and H5). H4: Standard operations such as flexor digitorum longus tendon transfer do not effectively restore alignment or stability of the arch or joint contact characteristics. H5: Deltoid ligament advancement significantly improves arch alignment and stability and joint contact characteristics.

据估计，美国有74,000,000人有步行 问题。所有年龄段患者中最常见的脚部障碍是PES 平面或扁平脚，可能是痛苦的残疾状况。有 关于最佳手术治疗方法的一些争论 标准拱形重建程序的缺点。主要目标 拟议的调查是解决与 脚拱的重建操作。更具体地说，两个 计划进行研究以增加对脚力学的基本理解 通过分析拱门的运动学和稳定性，以及第三项研究 计划将结果应用于拱形重建的发展 程序。 研究L：三维运动学和联合接触行为 脚的正常弓将在体外使用磁跟踪研究 在生理负荷条件下的系统。结果将用于 检验假设。 H1：弓的生理负荷导致 构成拱门的所有关节的显着位移和 联合接触特征的重大变化。 研究2：将在不同的负载下测试尸体脚本标本 具有六个结构稳定的连续切片的条件 拱以产生拱形不稳定性（PES Planus或Flat Foot畸形）。 解剖元素将以不同的序列和 每个结构对确定稳定性的相对贡献。二 将测试假设（H2和H3）。 H2：浅表三角肌和 鼠型韧带是最重要的静态结构 负责保持拱形稳定性。 H3：联合联系总面积和 塔龙藻和塔拉尔关节的接触分布是 PES Planus发生了重大改变。 研究3：使用第一和第二研究的数据，Arch重建 将根据运动学和比较操作 稳定。将测试两个假设（H4和H5）。 H4：标准 诸如屈肌长肌腱转移之类的操作不会 有效恢复拱或关节接触的对齐或稳定性 特征。 H5：三角肌韧带的进步显着改善 拱形对准和稳定性以及关节接触特性。