Lu Wei,Li Lianyong.Developmental regularity of acetabular anteversion in normal children[J].Journal of Clinical Pediatric Surgery,,19():155-160.[doi:10.3969/j.issn.1671-6353.2020.02.013]
Developmental regularity of acetabular anteversion in normal children
- Keywords:
- Acetabular Anteversion; Osseous Acetabular Anteversion; Cartilaginous Acetabular Anteversion; Magnetic Resonance Imaging
- CLC:
- R726.8;R681.6;R445.2
- Abstract:
- Objective To observe the developmental and growth patterns of osseous acetabular anteversion (OAA) and cartilaginous acetabular anteversion (CAA) with different ages on magnetic resonance imaging (MRI).Methods We retrospectively analyzed the medical records of children receiving hip MRI examination from January 2008 to January 2018.Among 293 children with normal development of the hips,there were 147 boys and 146 girls with a mean age of 8.01 years (1 month to 16 years).The values of OAA/CAA were measured on cross-sections on MRI and their normal developmental patterns determined by age-based cross-sectional analysis.The differences of OAA/CAA were compared between normal and DDH children.The data were statistically analyzed.Results Normal OAA increased from a mean value of 8.69°±3.16° to 11.83°±2.95° during the first two postnatal years.Then it stayed unchanged until 9 years.From 9 to 16 years,OAA showed a slight increase of 2°-3° again.The mean value of OAA rose to 14.37°±3.55° at the age of 16 years.Normal CAA spiked rapidly from a mean value of 12.29°±3.13° to 15.19°±2.68° within the first two years and then stabilized at a constant level of 15.17°±3.38° until 16 years.Conclusion Normal CAA has fully formed at birth and remains constant until adulthood.In childhood,osseous-anteversion does not represent cartilaginous-anteversion.And MRI is necessary for assessing acetabular cartilage components prior to hip surgery.
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Memo
收稿日期:2019-10-27。
基金项目:国家自然科学基金（编号：81772296）
通讯作者:李连永,loyo_ldy@163.com