Cahanin Richard, Fallavollita Andre, Burley Troy, McQuiston Samuel
Department of Physical Therapy, University of South Alabama, Mobile, AL, USA.
Department of Radiology, University of South Alabama, Mobile, AL, USA.
Ultrasound. 2024 May;32(2):86-93. doi: 10.1177/1742271X231195741. Epub 2023 Sep 28.
To determine and compare the reliability and efficiency of various methods of leg-length measurement.
A total of 88 leg-lengths were measured among 50 subjects (79%-84% female, mean age = 30-33 years). Leg-lengths were measured in both supine and standing positions using multiple devices, including a tape measure, a LASER distance meter, and diagnostic ultrasound.
All methods of leg-length measurement using the middle of the femoral head as a reference point, identified via ultrasound, demonstrated excellent reliability (intraclass correlation coefficient = 0.95-1.00). Measurements performed in supine, using the anterior superior iliac spine as a reference point, with a tape measure, demonstrated good-to-excellent reliability (intraclass correlation coefficient = 0.86-0.95, standard error of the measurement = 16.1-19.9 cm). Standing measurements using the anterior superior iliac spine as a reference point, using a tape measure, demonstrated fair-to-excellent reliability (intraclass correlation coefficient = 0.71-0.95).
Ultrasound-guided landmark identification appear to be a more reliable method compared to palpation of the anterior superior iliac spine for measurement of leg-length using clinical tools. When coupled with ultrasound guidance, a hand-held LASER distance meter/pitch locator apparatus or a retractable tape measure appears to be acceptable alternatives to a fixed LASER distance meter on a linear actuator for leg-length measurement.
确定并比较各种腿长测量方法的可靠性和效率。
对50名受试者（79%-84%为女性，平均年龄30-33岁）的88条腿进行了测量。使用多种设备在仰卧位和站立位测量腿长，这些设备包括卷尺、激光测距仪和诊断超声。
所有以超声确定的股骨头中点为参考点的腿长测量方法，均显示出极佳的可靠性（组内相关系数=0.95-1.00）。使用卷尺在仰卧位以髂前上棘为参考点进行的测量，显示出良好至极佳的可靠性（组内相关系数=0.86-0.95，测量标准误差=16.1-19.9厘米）。使用卷尺在站立位以髂前上棘为参考点进行的测量，显示出一般至极佳的可靠性（组内相关系数=0.71-0.95）。
与使用临床工具通过触诊髂前上棘测量腿长相比，超声引导下确定标志点似乎是一种更可靠的方法。当与超声引导相结合时，手持式激光测距仪/俯仰定位器设备或可伸缩卷尺似乎是线性致动器上固定激光测距仪用于腿长测量的可接受替代方案。
