The Role of Bone and Its Measurement in Knee Osteoarthritis
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 101
- 试验地点
- 1
- 主要终点
- Number of Participants With Viable Specimens for Genetic Analysis
研究概览
简要总结
The purpose of the study is to investigate protein and gene expression among damaged knee tissues. We will perform MRI's on subjects prior to total knee replacement to identify the location of bone marrow lesions. Connective tissues including tendon, ligament, and meniscus specimens normally discarded from total joint replacements will be used for live cell harvest, and protein and gene expression analyses of tissue or cultured cells.
详细描述
BACKGROUND AND SIGNIFICANCE:
Although the presence of bone marrow lesions (BML) on MRI is strongly associated with osteoarthritis (OA) progression and pain in some studies, the mechanism for this relation and the underlying pathology is not well established. The lack of knowledge on what these lesions constitute hampers their clinical utility both with regards to measurement and targeting for therapeutic intervention.
Our preliminary data has localized specific changes in bone mineralization, remodeling and defects within BML features that are adjacent to the subchondral plate. BMLs appear to be sclerotic compared to unaffected regions; however, the mineral density in these lesions is reduced and may render this area to be mechanically compromised, and thus susceptible to attrition. Limited histological analysis of BMLs reveal thrombi, diffuse fibrinoid necrosis and hyperplasia of blood vessel walls - all indicative of infarction-like pathology.
The aim of this research proposal is to create more specific targets and improve our understanding of the pathology in BMLs.
Specific Aim 1:
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •subjects having primary knee replacement surgery with 1 participating surgeon at NEBH (principal investigator)
排除标准
- •subjects having a revision knee replacement instead of a primary knee replacement
- •contraindications for MRI
- •pregnancy
结局指标
主要结局
Number of Participants With Viable Specimens for Genetic Analysis
时间窗: Tissue samples collected at time of surgery
次要结局
未报告次要终点
研究者
David Hunter
PI
The New England Baptist Hospital