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在执行机械对齐的TKA时,我们经常改变宪法四肢对齐,关节线曲和膝盖冠状平面对齐 (CPAK) 现象吗?

Luke E Corban¹, Victor A van de Graaf¹, Darren B Chen^1,2

¹Sydney Knee Specialists, Sydney, Australia.

Bone & joint open

|February 7, 2024

概括

在全膝关节整形术中,机械对齐显著改变了结构对齐,特别是增加了关节线斜率. 这项研究量化了膝盖对齐和表型中的这些无意的变化.

科学领域:

整形外科手术整形外科手术
生物机械工程生物机械工程
医疗成像医学成像

背景情况:

机械对齐 (MA) 是全膝关节整形术 (TKA) 的标准.
马对宪法调整和联合线斜率 (JLO) 的影响尚未完全理解.
了解这些变化对于优化TKA结果至关重要.

研究的目的:

量化由于TKA中的MA而导致的宪法冠状线对齐和JLO的无意变化.
分析膝关节冠状平面对齐 (CPAK) 现象型的变化.
评估MA在实现所需膝关节对齐方面的精度.

主要方法:

对700个初级MA TKAs进行了回顾性队列研究.
在手术前和后,测量横向远距离的股骨角和中位近距离的骨角.
算术关节膝关节角 (aHKA),JLO和CPAK表型的计算.

主要成果:

术后平均JLO显著增加5.8°.
大多数膝盖转移到顶部水平JLO表型 (CPAK类型IV-VI).
60%的TKA从其宪法调整中发生了变化,35%无意中重新调整为其他CPAK类型.

结论:

在TKA中固定的MA目标会导致与宪法调整的实质性偏差.
MA导致JLO的显著增加和膝盖表型的变化.
这些发现突出了手术切除的不精确性和TKA的意外对齐变化.

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