Analysis of Clinical Features,Ultrasound Findings,and Related Factors of Hip Dysplasia in Premature Infants
Objective To analyze the clinical features,ultrasound findings,and related factors of hip dysplasia (DDH) in preterm infants. Methods From January 2023 to December 2023,1800 preterm infants aged 0-4 months from Nanjing Maternal and Child Health Hospital were selected as study subjects. They were divided into<28 weeks,28 to 31 weeks,32 to 33 weeks,and 34 to 37 weeks according to gestational age. According to the time of the first ultrasound examination,they were divided into<1 month,2 months,3 months,and 4 months,and according to whether DDH occurred,they were divided into DDH group and Non-DDH group. The clinical characteristics and ultrasound findings of preterm infants were analyzed accord-ing to gestational age and time of the first ultrasound examination. Maternal perinatal factors and preterm infants'own factors were compared between the DDH and Non-DDH groups,and logistic regression was used to analyze factors influencing DDH. Results There were statistically significant differences in hip asymmetry and hip bounce between preterm infants at different gestational weeks (P<0.05). The smaller the gestational weeks,the higher the detection rate of hip asymmetry and hip bounce. The proportion of preterm babies with asymmetrical hip lines was higher at 3 months of age than at 2 months of age (P<0.05),and the proportion of preterm babies with asymmetrical hip lines was higher at 2,3,and 4 months of age than at<1 month of age (P<0.05). The proportion of preterm infants with restricted hip abduction was higher at 3 months of age than that at<1 month of age and 2 months of age(P<0.05),and that at 4 months of age was higher than that at<1 month of age(P<0.05). The propor-tion of hip joint bounce at 2,3 and 4 months of age was higher than that at<1 month of age(P<0.05). The α angle decreased while the β angle increased with smaller gestational ages and younger examination ages (P<0.05). Multivariate logistic regression analysis showed that fam-ily history,hip clicking,and β angle were independent risk factors for DDH,while gestational age and α angle were protective factors (P<0.05). Conclusion The incidence of DDH in preterm infants is high. Family history,hip clicking,and β angle are independent risk factors. Early diagno-sis and intervention for risk factors are crucial for improving outcomes.
万方数据
维普
