Preoperative Gluteal Muscle Atrophy: A Silent Predictor of THA Dislocation.
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 72
- 试验地点
- 1
- 主要终点
- Mean Attenuation Ratio
研究概览
简要总结
This study looks at how fat buildup in hip muscles relates to hip osteoarthritis and less favorable recovery after hip replacement surgery. While it is known that weak gluteal muscles might cause problems, it is not yet proven if this specifically leads to hip dislocation after surgery. The goal of this study is to compare fat buildup in gluteal muscles between patients who had a hip dislocation soon after surgery and those who did not.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Control
- 时间视角
- Retrospective
入排标准
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •primary THA with preoperative CT-scan
排除标准
- •malposition of acetabular implants outside the Lewinneck safe zone,
- •neurological or cognitive disorders,
- •associated spinal pathologies (within the context of a hip-spine syndrome),
- •chronic alcoholism,
- •aseptic osteonecrosis,
- •revision surgeries,
- •late dislocations attributed to polyethylene wear,
- •replacement following post-traumatic coxarthrosis due to acetabulum injuries.
- •diameters of the prosthetic heads ≠ 32mm
结局指标
主要结局
Mean Attenuation Ratio
时间窗: The CT scan of the pelvis used to plan the operation is performed between one and two months before the surgery.
The mean attenuation ratio (MAR), representing muscle fat degeneration, corresponds to the mean grayscale pixels in the selected area, expressed in Hounsfield Units (HU). Subsequently, the segmentation process was applied, selectively retaining pixels within the range of -30 HU to 150 HU. This range corresponds to muscle fibers and intramuscular fat, effectively excluding extra-fascial fat and bone pixels.
次要结局
- Cross-Sectional Area(The CT scan of the pelvis used to plan the operation is performed between one and two months before the surgery.)
- Intramuscular Fatty Fraction(The CT scan of the pelvis used to plan the operation is performed between one and two months before the surgery.)