Contact mechanics, neuromuscular control, and cartilage composition in knee OA

膝关节 OA 的接触力学、神经肌肉控制和软骨成分

基本信息

项目摘要

DESCRIPTION (provided by applicant): Mechanical loading during daily activities plays a critical role in the onset and progression of knee osteoarthritis (OA). Taking advantage of the rich quantitative MRI dataset acquired through the parent study (AR R0146905-11), this project utilizes a multi-scale approach towards understanding the knee OA disease process by evaluating cartilage compositional changes, joint contact mechanics, whole-body neuromuscular dynamics and functional performance. One hundred-five subjects with and without knee OA will undergo kinematic-MRI, neuromuscular control testing during functional tasks, metrics of functional performance, and quantitative MR for cartilage and meniscus composition. Both cross-sectional (OA vs. controls) and longitudinal (baseline, 1- year, 2-year, and 3-year follow-up) aims are proposed. With the addition of in-vivo articular contact mechanics and neuromuscular patterns, the dataset will become extremely comprehensive giving an unparalleled ability to look at multiple metrics affecting incidence and progression in knee OA. It is hypothesized that the resulting combined metrics, across scales from tissue composition to function, will provide stronger biomarkers for early detection and progression prognosis of the disease. This knowledge will be directly translatable to the clinic since neuromuscular factors like strength, movement, and muscle activation are modifiable through targeted orthotic and rehabilitation interventions; and structural factors like malalignment or abnormal articular contact mechanics may be influenced through surgical interventions. Specific Aim 1: A) To quantify differences in articular contact mechanics using kinematic MR in controls and subjects with knee OA; and to establish the correlation of articular contact mechanics with metrics from cartilage and meniscus T1A and T2 relaxation times, morphological grades, radiographic and functional measures. B) To quantify differences in neuromuscular control in controls and subjects with knee OA; and to determine the relationship between neuromuscular control during walking and articular contact mechanics, cartilage and meniscus T1A and T2 relaxation times, morphological grades, radiographic and functional measures. Specific Aim 2: A) To determine the longitudinal change over three years in articular contact mechanics in controls and subjects with knee OA; and to determine the longitudinal change over three years in neuromuscular control during walking in controls and subjects with knee OA. B) To determine the predictive capability of baseline articular contact mechanics and neuromuscular control at determining disease progression.
描述(由申请方提供):日常活动期间的机械负荷在膝关节骨关节炎(OA)的发生和进展中起着关键作用。利用通过母研究(AR R 0146905 -11)获得的丰富定量MRI数据集,本项目采用多尺度方法,通过评价软骨成分变化、关节接触力学、全身神经肌肉动力学和功能表现来了解膝关节OA疾病过程。105名患有和不患有膝关节OA的受试者将在功能任务期间接受运动-MRI、神经肌肉控制测试、功能性能指标以及软骨和半月板组成的定量MR。提出了横截面(OA与对照组)和纵向(基线、1年、2年和3年随访)目标。随着体内关节接触力学和神经肌肉模式的增加,数据集将变得非常全面,从而具有无与伦比的能力来查看影响膝关节OA发生率和进展的多个指标。据推测,从组织组成到功能的各个尺度上,所得的组合指标将为疾病的早期检测和进展预后提供更强的生物标志物。这些知识将直接转化为临床,因为神经肌肉因素,如力量,运动和肌肉激活,可以通过有针对性的矫形和康复干预进行修改;结构因素,如对线不良或异常关节接触力学可能会受到手术干预的影响。具体目标1:A)在对照组和膝关节OA受试者中使用运动学MR量化关节接触力学的差异;并建立关节接触力学与软骨和半月板T1 A和T2弛豫时间、形态学分级、放射学和功能测量指标的相关性。B)量化对照组和膝关节OA受试者的神经肌肉控制差异;并确定行走期间神经肌肉控制与关节接触力学、软骨和半月板T1 A和T2松弛时间、形态学分级、放射学和功能测量之间的关系。具体目标二:A)确定对照组和膝关节OA受试者关节接触力学在三年内的纵向变化;并确定对照组和膝关节OA受试者行走期间神经肌肉控制在三年内的纵向变化。B)确定基线关节接触力学和神经肌肉控制在确定疾病进展时的预测能力。

项目成果

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Richard Brian Souza其他文献

Richard Brian Souza的其他文献

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{{ truncateString('Richard Brian Souza', 18)}}的其他基金

Mentoring Biomechanics Research in Osteoarthritis
指导骨关节炎的生物力学研究
  • 批准号:
    9889031
  • 财政年份:
    2018
  • 资助金额:
    $ 26.66万
  • 项目类别:
Mentoring Biomechanics Research in Osteoarthritis
指导骨关节炎的生物力学研究
  • 批准号:
    10593886
  • 财政年份:
    2018
  • 资助金额:
    $ 26.66万
  • 项目类别:
Structural, Biochemical and Functional Connectivity in Osteoarthritis using Quantitative Magnetic Resonance Imaging and Skeletal Biomechanics
利用定量磁共振成像和骨骼生物力学研究骨关节炎的结构、生化和功能连接
  • 批准号:
    10442589
  • 财政年份:
    2016
  • 资助金额:
    $ 26.66万
  • 项目类别:
Contact mechanics, neuromuscular control, and cartilage composition in knee OA
膝关节 OA 的接触力学、神经肌肉控制和软骨成分
  • 批准号:
    8249313
  • 财政年份:
    2011
  • 资助金额:
    $ 26.66万
  • 项目类别:
Contact mechanics, neuromuscular control, and cartilage composition in knee OA
膝关节 OA 的接触力学、神经肌肉控制和软骨成分
  • 批准号:
    8327648
  • 财政年份:
    2011
  • 资助金额:
    $ 26.66万
  • 项目类别:
Contact mechanics, neuromuscular control, and cartilage composition in knee OA
膝关节 OA 的接触力学、神经肌肉控制和软骨成分
  • 批准号:
    8722314
  • 财政年份:
    2011
  • 资助金额:
    $ 26.66万
  • 项目类别:
Human Performance and Functional Testing Core
人类表现和功能测试核心
  • 批准号:
    8102422
  • 财政年份:
  • 资助金额:
    $ 26.66万
  • 项目类别:
Human Performance and Functional Testing Core
人类表现和功能测试核心
  • 批准号:
    8712116
  • 财政年份:
  • 资助金额:
    $ 26.66万
  • 项目类别:
Human Performance and Functional Testing Core
人类表现和功能测试核心
  • 批准号:
    8915488
  • 财政年份:
  • 资助金额:
    $ 26.66万
  • 项目类别:

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