Prediction of the Labrum Shape in Patients With Developmental Dysplasia of the Hip Based on Pelvic Radiography

作者全名：Huang, Xinyan; Cheng, Xiang; Gao, Sijie; Liu, Yinxin; Su, Yuxi; Feng, Chuan

作者地址：[Huang, Xinyan; Cheng, Xiang; Gao, Sijie; Liu, Yinxin; Feng, Chuan] Chongqing Med Univ, Dept Radiol, Childrens Hosp, Chongqing, Peoples R China; [Huang, Xinyan; Cheng, Xiang; Su, Yuxi; Feng, Chuan] Minist Educ Key Lab Child Dev & Disorders, Chongqing Key Lab Pediat, Chongqing, Peoples R China; [Huang, Xinyan; Cheng, Xiang; Su, Yuxi; Feng, Chuan] Natl Clin Res Ctr Child Hlth & Disorders, Chongqing, Peoples R China; [Huang, Xinyan; Cheng, Xiang] China Int Sci & Technol Cooperat Base Child Dev &, Chongqing, Peoples R China; [Su, Yuxi] Chongqing Med Univ, Dept Orthoped, Childrens Hosp, Chongqing, Peoples R China; [Su, Yuxi] Chongqing Med Univ, Jiangxi Hosp Affiliated Childrens Hosp, China Int Sci & Technol Cooperat Base Child Dev &, Chongqing, Peoples R China; [Feng, Chuan] China Int Sci & Technol Cooperat Base Child Dev &, Chongqing, Peoples R China

通信作者：Su, YX; Feng, C (通讯作者)，136 Zhongshan 2road, Chongqing 400014, Peoples R China.

来源：JOURNAL OF PEDIATRIC ORTHOPAEDICS

ESI学科分类：CLINICAL MEDICINE

WOS号：WOS:001239409500007

JCR分区：Q3

影响因子：1.4

年份：2024

卷号：44

期号：6

开始页：e490

结束页：e495

文献类型：Article

关键词：developmental dysplasia of the hip (DDH); pelvic radiography; labrum; children

摘要：Background:The shape of the labrum is strongly correlated with outcomes of developmental dysplasia of the hip (DDH). Magnetic resonance imaging (MRI) is the generally preferred imaging technique for observing the labrum.Purpose:We aimed to find a correlation between the labrum shape and anterior-posterior (AP) pelvic measurements in children with DDH.Methods:Preoperative AP pelvic x-ray radiographs and MRI of patients with DDH from January 2019 to December 2021 were retrospectively collected and divided into three groups by labrum shape on MRI: everted, partly inverted, and inverted. The acetabular length ratio (RAL) in patients with unilateral DDH and the ratio of acetabular length to interpedicular distance (RALI) in all patients were calculated. T-tests were used to analyze differences between the groups. Receiver operating characteristic curve (ROC) analysis was performed between the everted group and the partly inverted and inverted groups.Results:We found significant differences in RAL between the everted and partly inverted groups, everted and inverted groups, and everted and combined groups. The ROC analysis showed that the best cutoff value for RAL was 0.945 between the everted and combined groups, with an area under the curve (AUC) of 88.4%. The sensitivity at the best RAL value was 0.783, and the specificity was 0.887. Moreover, we observed a significant difference in RALI between the everted, partly inverted, and inverted groups, as well as between the everted and combined groups. The optimal cutoff value for RALI between the everted and combined groups was 0.575, with an AUC of 74.5%. The sensitivity at the best RALI value was 0.765, and the specificity was 0.674.Conclusion:The RAL or RALI values on pelvic AP radiographs can be used to predict the shape of the labrum.Level of Evidence:III.

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