KINEMATICS AND STABILITY OF THE ARCH OF THE FOOT

足弓的运动学和稳定性

• 批准号: 2081488
• 负责人: HAROLD B KITAOKA
• 金额: $ 8.88万
• 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/2081488
• 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 人有脚 问题。所有年龄段患者中最常见的足部疾病是足部足部疾病 扁平足或扁平足可能是一种痛苦的、致残的疾病。有 关于最佳手术治疗方法的一些争论，因为 标准牙弓重建程序的缺点。主要目标 拟议的调查是为了解决与 足弓的重建手术。更具体地说，两个 计划进行研究以增加对足部力学的基本了解 通过分析拱门的运动学和稳定性，第三项研究 计划将研究结果应用于足弓重建的发展 程序。 研究l：三维运动学和关节接触行为 将使用磁跟踪在体外研究正常足弓 生理负荷条件下的系统。结果将用于 检验假设。 H1：足弓的生理负荷导致 构成足弓的所有关节均发生显着位移 关节接触特性发生显着变化。 研究2：尸体足部标本将在不同负载下进行测试 连续切片六个结构的条件稳定 足弓造成足弓不稳定（扁平足或扁平足畸形）。 解剖元素将以不同的顺序进行切片， 确定每个结构对稳定性的相对贡献。二 假设（H2 和 H3）将得到检验。 H2：三角肌浅层和 距跟韧带是最重要的静态结构 负责维持足弓稳定性。 H3：总关节接触面积和 距舟关节和距下关节的接触分布为 扁平足明显改变。 研究 3：使用第一项和第二项研究的数据，牙弓重建 操作将根据运动学和 稳定。将测试两个假设（H4 和 H5）。 H4：标准 诸如指长屈肌腱转移之类的手术不 有效恢复足弓或关节接触的对齐或稳定性 特征。 H5：三角韧带前进显着改善 足弓的排列和稳定性以及关节接触特征。