Distinguishing Acetabulum Cup Retroversion From Anteversion on Anteroposterior Radiographs After Total Hip Arthroplasty
试验速览
- 阶段
- 不适用
- 入组人数
- 20
- 主要终点
- A computerized ellipse method (Liaw's version) for measurement and detection of acetabulum cup retroversion.
研究概览
简要总结
In this study, investigators will demonstrate and prove a ellipse method (Liaw's version) for measurement and detection of acetabulum cup retroversion.
详细描述
Total hip arthroplasty (THA) is considered to be the best and most reliable treatment of end-stage hip disorders with satisfactory long-term clinical outcomes. However,the incidence of postoperative dislocation ranges from 0.3% to 3% in primary THA. The most important risk factor is malpositioning of implant components. Generally, excessive anteversion and retroversion increase risk of anterior and posterior hip dislocation respectively. Several radiological methods have been proposed to measure anteversion of the acetabular cup on plain radiographs, but most of these methods cannot accurately distinguish cup retroversion from anteversion. In this study, investigators will demonstrate and prove a ellipse method (Liaw's version) for measurement and detection of acetabulum cup retroversion.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Only
- 时间视角
- Retrospective
入排标准
- 年龄范围
- 30 Years 至 90 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patients undergone total hip arthroplasty
- •Patients undergone total hip arthroplasty with more than two postoperative anteroposterior radiographs of pelvis
- •Patients undergone total hip arthroplasty with postoperative pelvic CT
排除标准
- •Patients with congenital pelvis abnormality or pelvic fracture history
- •Patients with postoperative periprosthetic fracture(s)
- •Patients with postoperative infection or implants loosening
- •Patients undergone total hip arthroplasty without more than two postoperative anteroposterior radiographs of pelvis
- •Patients undergone total hip arthroplasty without postoperative pelvic CT
结局指标
主要结局
A computerized ellipse method (Liaw's version) for measurement and detection of acetabulum cup retroversion.
时间窗: 10 days
Total hip arthroplasty (THA) is considered to be the best and most reliable treatment of end-stage hip disorders with satisfactory long-term clinical outcomes. However,the incidence of postoperative dislocation ranges from 0.3% to 3% in primary THA. The most important risk factor is malpositioning of implant components. Generally, excessive anteversion and retroversion increase risk of anterior and posterior hip dislocation respectively. Several radiological methods have been proposed to measure anteversion of the acetabular cup on plain radiographs, but most of these methods cannot accurately distinguish cup retroversion from anteversion. In this article, we will demonstrate and prove a computerized ellipse method (Liaw's version) for measurement and detection of acetabulum cup retroversion.
次要结局
未报告次要终点