Comment on Jia et al.: Three dimensional CT evaluation of femoral neck anteversion, acetabular anteversion and combined anteversion in unilateral DDH in an early walking age group

摘要

With great interest we read the article, "Three dimensional CT evaluation of femoral neck anteversion, acetabular ante-version and combined anteversion in unilateral DDH in an early walking age group" by Jia et al. [1], published in your esteemed journal International Orthopedics. First of all, we would like to congratulate the authors for an excellent study. However, we would like to raise a few points which need further clarification. The analysis of the data showed no statistically significant difference between dislocated and normal hips in relation to FA (p-value 0.071) (Table 1). But subgroup analysis showed a statistically significant difference in the Tonnis IV group (p-value 0.028) (Table 2).