Abstract：Objective To investigate the prevalence of neonatal developmental dysplasia of hip (DDH) in Yinzhou Distict, Ningbo City, and to analyze the high-risk factors, clinical manifestations and natural outcomes of Graf IIa DDH. Methods The first-week newborns in Yinzhou District No.2 Hospital, Ningbo City were examined by Mylab50 color doppler ultrasonic diagnostic instrument to screen hip abnormalities from July, 2013 to July, 2015. The newborns diagnosed with Graf IIa DDH would undergo ultrasound reexamination at 6-7 weeks of age freely, and then the anomalies would be intervened by hip joint gymnastics and wide diaper method and rechecked at 12-14 weeks of age. The high-risk factors of Graf IIa DDH were also analyzed. Results Among the 2,225 newborns underwent hip ultrasound examination, there were 392 Graf IIa DDH, 21 Graf IIc DDH, 6 Graf III DDH, and 4 Graf IV DDH. The positive rate of initial screening was 19.01% (423/2,225), including 326 girls and 97 boys. The prevalence rates of the girls and the boys were 29.74% and 8.59% respectively, with statistically significant differences (χ2=161.61,P<0.05). Only 24 (6.12%) of the newborns with Graf IIa DDH had significant high-risk factors and 17 (4.34%) got clinical manifestations. The most common high-risk factor was breech delivery, and the most common clinical feature was the asymmetry of bilateral hip. Most of the newborns with Graf IIa DDH resumed normal at 6-7 weeks or 12-14 weeks of age, and the good prognosis rate of the boys was higher than that of the girls. Conclusions The prevalence rate of DDH in the newborns in Yinzhou District, Ningbo City during 2013-2015 is very high, especially in the girls. No significant high-risk factors and clinical manifestations of Graf IIa DDH are found in these newborns; and hence, ultrasound examination plays an important role in the screening, early diagnosis and treatment. With the growth and development, most of Graf IIa DDH newborns will switch back, but the occurrence rate of therapy is higher in girls than in boys. More attention should be paid to hip ultrasound screening and follow-up in girls.
祝素萍, 兰观华, 杜青, 马苏亚. 2013-2015年鄞州区新生儿DDH发病情况及Ⅱa型DDH发育异常高危因素与转归分析[J]. 实用预防医学, 2017, 24(3): 324-326.
ZHU Su-ping, LAN Guan-hua, DU Qing, MA Su-ya. Prevalence of neonatal DDH and high-risk factors and prognoses of Graf IIa DDH in Yinzhou District, Ningbo City, 2013-2015. , 2017, 24(3): 324-326.
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