在骨关节炎膝关节中膝关节分类的冠状平面对齐:可靠性差到中等以及对成像选择的影响
Pierre-Alban Bouché1, Halah Kutaish2, Xavier Gasparutto2
1Division of Orthopaedic Surgery and Musculoskeletal Trauma Care, Geneva University Hospitals, Geneva, Switzerland; University of Paris Cite, Faculty of Medecine, Paris, France.
The Journal of arthroplasty
|July 14, 2025
概括
膝盖冠状平面对齐 (CPAK) 分类显示骨关节炎膝盖的可靠性差到中等. 在CPAK评估中,全长载重放射图比EOS成像更可靠.
科学领域:
- 整形外科手术 整形外科手术
- 放射学 放射学是一门学科.
- 生物机械分析分析
背景情况:
- 膝盖冠状平面对齐 (CPAK) 分类在临床实践和研究中越来越多地用于评估膝盖对齐.
- 之前的研究重点是角度测量的可靠性,而不是分类系统本身.
- 评估CPAK分类的可靠性对于其在诊断和管理膝关节关节炎中的一致应用至关重要.
研究的目的:
- 评估CPAK分类系统在观察者之间和观察者内部的可靠性.
- 为了比较CPAK分类在不同成像方式中的可靠性:全长负载放射,2D EOS和3D EOS.
- 为了确定可靠的CPAK分类在骨关节炎膝盖的首选成像方法.
主要方法:
- 一个单一的,重复的横截面研究包括39名患有骨关节炎膝盖的患者 (78个膝盖).
- 两位独立的检查员在两周间隔的时间内,两次对全载量放射图,二维EOS和三维EOS图像进行CPAK分类.
- 在角度可靠性方面使用了类内相关系数 (ICC),在CPAK分类可靠性方面使用了科恩的卡帕系数.
主要成果:
- 在CPAK分类中,观察者内部 (Kappa=0.39-0.48) 和观察者间 (Kappa=0.39) 的可靠性较差到中等.
- 与2D EOS (Kappa=0.25-0.35) 和3D EOS (Kappa=0.22-0.40) 相比,全长负载放射显示出更好的可靠性 (卡帕=0.55-0.61).
- 像LDFA和MPTA这样的单个角度测量在各种模式中显示出良好的可靠性.
结论:
- CPAK分类本身的可靠性是不理想的,从差到中等.
- 建议在EOS成像上进行全长负载放射,以更可靠地对骨关节炎膝盖进行CPAK分类.
- 进一步完善CPAK分类或成像协议可能是必要的,以提高其诊断准确性.
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