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| Analysis of results and treatment of 533 cases of developmental hip dysplasia in infants screened by ultrasound |
| YANG Po, LI He-zhou, WANG Xin-xia, LIU Yun, WANG Chao-hua, ZHANG Xing-he |
| Department of Ultrasound, the Third Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China |
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Abstract Objective: To analyze the results of 533 cases of infant developmental dysplasia of hip(DDH) screened by ultrasound, and to follow up the therapeutic effect, so as to provide the basis for clinical treatment. Methods: From May 2012 to June 2017, a total of 21 281 cases of suspected DDH in our hospital were analyzed retrospectively. The acetabulum shape and measurement values of α, β angle in the ultrasonic examination results of the above cases were observed. Graf method was used to classify the development of the hip joint, and the distribution of DDH was analyzed, and the treatment effect was followed up. Results: Among 21 281(42 562 hips) cases of suspected DDH, the positive rate of DDH examination was 2.50%(533/21 281). Among the DDH children, there were 413 female infants and 120 male infants. There were 95 cases of bilateral DDH(190 hips). Four hundreds and fifty-seven cases of DDH on the left and 171 cases of DDH on the right. One hundred and seventy-six DDH children received hip abduction exercise, and 164 returned to normal. One hundred and fifteen DDH children received Pavlik sling treatment, 104 returned to normal. Five patients received gypsum fixation after closed reduction, and all returned to normal. Conclusion: There are more female infants than male infants in DDH, more on one side and more on the left side than on the right side. The positive rate of clinically suspected DDH is about 2.5%. Hip abduction exercise is the preferred conservative treatment for type Ⅱ hip joint, especially for type Ⅱa hip joint. Pavlik sling is the first choice of conservative treatment for DDH children. Gypsum fixation after closed reduction is especially suitable for children who are older than one month old, who have failed in the treatment of hip extension exercise and Pavlik sling.
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Received: 12 November 2018
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