Gibson A T, Pearse R G, Wales J K
Jessop Hospital for Women, Sheffield.
Arch Dis Child. 1993 Nov;69(5 Spec No):498-504. doi: 10.1136/adc.69.5_spec_no.498.
The characteristics of a knemometer designed for accurate lower leg measurement in babies were assessed. Repeated measurement of a 100 mm Perspex rod gave a mean length of 99.993 mm and a mean SD of 0.058. When used to measure leg length, technical error of the measurement technique was 0.31 with a mean leg length of 98.49 mm (coefficient of variation 0.31%). Leg lengths measured at birth in 324 babies from 23 to 42 weeks' gestation gave an estimated in utero leg length velocity of 0.43 mm/day (95% confidence interval 0.41 to 0.45). Assessment of interobserver variation showed poor agreement in absolute values of leg length, although similar estimates of leg length velocity could be obtained. The neonatal knemometer allows measurements to be made in situations where conventional growth measurements are not possible. It is believed that knemometry has an important role in accurate evaluation of factors that can influence short term bone growth.
对一款专为精确测量婴儿小腿而设计的小腿长度测量仪的特性进行了评估。对一根100毫米的有机玻璃棒进行重复测量，得到的平均长度为99.993毫米，平均标准差为0.058。当用于测量腿长时，测量技术的技术误差为0.31，平均腿长为98.49毫米（变异系数0.31%）。对324名妊娠23至42周的婴儿出生时的腿长进行测量，得出子宫内腿长速度估计为0.43毫米/天（95%置信区间为0.41至0.45）。观察者间差异评估显示，腿长绝对值的一致性较差，不过可以获得相似的腿长速度估计值。这款新生儿小腿长度测量仪能够在无法进行传统生长测量的情况下进行测量。据信，小腿长度测量法在准确评估可能影响短期骨骼生长的因素方面具有重要作用。
