Department of Orthopaedics & Trauma, University of Benin Teaching Hospital, Benin, Nigeria.
Int Orthop. 2012 Jun;36(6):1247-53. doi: 10.1007/s00264-011-1451-z. Epub 2011 Dec 20.
The tibiofemoral angle (TFA) is a reliable tool for determining lower-limb axial alignment and defining the degree of deformity in pathologic angular malalignment of the knee in children.
We clinically examined 471 normal Nigerian elementary school children whose ages ranged from three to ten years to determine the clinical tibiofemoral angle and to establish its relationship with body mass index (BMI).
We found maximum knee valgus of 7.87° at three years, decreasing to 1° at ten years. We also found significant negative correlation between the tibiofemoral angle and BMI. All children examined had weights between the 5th and 85th percentile for age and sex.
We conclude that in normal healthy-weight children, BMI does not cause an increase in tibiofemoral angle.
胫骨股骨角（TFA）是一种可靠的工具，可用于确定下肢轴向对线，并定义儿童膝关节病理性角度对线不良的畸形程度。
我们对 471 名尼日利亚小学正常儿童进行了临床检查，这些儿童的年龄从 3 岁到 10 岁不等，以确定临床胫骨股骨角，并确定其与体重指数（BMI）的关系。
我们发现 3 岁时最大膝外翻为 7.87°，10 岁时降至 1°。我们还发现胫骨股骨角与 BMI 之间存在显著的负相关关系。所有接受检查的儿童的体重均处于年龄和性别的第 5 百分位至第 85 百分位之间。
我们得出结论，在正常健康体重的儿童中，BMI 不会导致胫骨股骨角增加。
