Chinese Journal of Clinical Anatomy ›› 2021, Vol. 39 ›› Issue (3): 359-362.doi: 10.13418/j.issn.1001-165x.2021.03.021

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Application value of prenatal ultrasound in the diagnosis of congenital valgus foot

Lan Jiafu, Zhong Qiuhong, Lu Qisheng, Zhang Qiuyan   

  1. Affiliated Hospital of Youjiang Medical College for Nationalities,Baise 533000, Guangxi Zhuang Autonomous Region, China
  • Received:2019-12-19 Online:2021-05-25 Published:2021-06-02

Abstract: Objective To explore the application value of prenatal ultrasound in the diagnosis of congenital valgus foot.  Methods To select thirty-eight children (44 affected feet) with congenital horseshoe varus treated in our hospital from January 2016 to January 2019 as the observation group, and the screening time is 20 to 26 weeks of pregnancy. Another 35 cases of fetuses (70 feet) who were normal in our hospital during the same period were selected) as a control group. Color ultrasound diagnostic equipment was used to measure the foot length (FL) and foot width (FW) of the two groups, and the FL / FW value was calculated the children's disease severity was evaluated using the Dimeglio method, and their relationship with FL, The correlation between FW and FL / FW. The clinical value of FL, FW and FL / FW in the diagnosis of congenital varus equivatus were analyzed by ROC method.    Results   Compared with the control group, the children in the observation group had smaller FL and FL / FW values, while the FW values were larger, and the differences were statistically significant (P<0.05); there were differences in FL, FW, and FL/FW between different Dimeglio grades. All were statistically significant (P<0.055). FL and FL/FW values gradually decreased with the increase of Dimeglio classification (P<0.05), while FW values gradually increased with the increase of Dimeglio classification (P<0.05); Spearman analysis showed that FW was positively correlated with Dimeglio score, while FL and FL/FW were negatively correlated with Dimeglio score (P<0.05); ROC curve analysis showed that FL, FW and FL/FW diagnosed congenital valgus. The areas under the curve are 0.723 (95% CI: 0.591 to 0.926, P = 0.005), 0.661 (95% CI: 0.522 to 0.849, P=0.017), and 0.835 (95% CI: 0.709 to 0.984, P<0.001). The best diagnostic cutoff values are 4.01, 2.49 and 1.92, respectively, and the diagnostic sensitivity and specificity are 80.73 and 81.26, 81.07 and 78.93, 90.13, and 90.74. FL / FW has the largest diagnostic value for congenital valgus.    Conclusions    Prenatal ultrasound has important reference value for clinically accurate diagnosis of congenital horseshoe varus.

Key words: Congenital horseshoe varus,  ,  , Prenatal, ultrasound diagnosis,  ,  , Application value

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