用数字倾角仪测量的膝关节内外旋转与电磁跟踪系统测量的结果一致

IF 2 Q2 ORTHOPEDICS

Journal of Experimental Orthopaedics Pub Date : 2025-03-11 DOI:10.1002/jeo2.70209

Mark K. Timmons, Hunter G. Copley, Dustin T. Darnell, Seth T. Jude, Gary McIlvain

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引用次数: 0

摘要

目的：过度膝关节旋转的个体有更高水平的功能障碍和残疾。一种廉价、可靠的评估膝关节内（IR）和外（ER）旋转的方法将改善对膝关节损伤的评估。研究了两种膝关节旋转测量方法的可靠性和测量误差。该研究验证了以下假设：数字倾斜仪将提供可靠的膝关节内外旋转测量，并且数字倾斜仪的测量结果将与电磁跟踪系统的测量结果一致。方法20例无膝关节损伤的患者参与研究。使用电磁跟踪和数字倾角仪测量膝关节IR和ER。计算了两种技术的类内相关系数（ICC(2,1)）。结果两种设备的设备内ICC值在0.826 ~ 0.939之间。设备内最小可检测变化（MDC）范围为1.2°至1.9°。EI和IR测量的ICC值在设备之间崩溃，范围从0.717到0.859。设备间的MDC取值范围为1.6°~ 1.9°。结论本研究结果表明，两种测量技术均可可靠地测量膝关节IR和ER。膝关节ER和IR的测量在两种装置之间或左右两侧之间没有差异。证据水平四级，诊断性，病例系列研究。

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Measures of knee internal and external rotation made with a digital inclinometer are consistent with the measures made with an electromagnetic tracking system

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Measures of knee internal and external rotation made with a digital inclinometer are consistent with the measures made with an electromagnetic tracking system

Purpose

Individuals with excessive knee rotation have higher levels of dysfunction and disability. An inexpensive, and reliable method to assess knee internal (IR) and external (ER) rotation will improve the assessment of knee injuries. The study explored the reliability and measurement error of two methods of knee rotation measurement. The study tested the hypothesis that the digital inclinometer will provide reliable measures of knee internal and external rotation and that the digital inclinometer measurements will be consistent with the measurements made with the electromagnetic tracking system.

Methods

Twenty (20) participants without knee injury participated. Knee IR and ER were measured using electromagnetic tracking and a digital inclinometer. The intraclass correlation coefficient (ICC_(2,1)) was calculated for both techniques.

Results

The within device ICC values ranged from 0.826 to 0.939 for both devices. The within-device minimal detectable change (MDC) ranged from 1.2° to 1.9°. The ICC values for EI and IR measures collapsed between the devices, ranged from 0.717 to 0.859. The MDC calculated between devices ranged from 1.6° to 1.9°.

Conclusion

The results of the current study show that knee IR and ER can be measured reliably with both measurement techniques. The measurement of knee ER and IR did not differ between the two devices or between the right and left sides.