ArticleJournal of orthopaedic surgery and research2025
Morphological differences between residual childhood hip dysplasia with previous osteotomy and adolescent-onset hip dysplasia.
Article in Journal of orthopaedic surgery and research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Three-Dimensional Estimation of the Femoral Head Center From Trochanteric Landmarks in Japanese Female Patients With Developmental Dysplasia of the Hip.Orthopaedic surgery · 2026Article
- Evaluation of femoro-epiphyseal acetabular roof index for assessing hip instability in hip disorders in female patients.Archives of orthopaedic and trauma surgery · 2026Article
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7 authors.
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Abstract
backgroundHip dysplasia (HD) at skeletal maturity can result from residual developmental dysplasia of the hip (DDH) treated in childhood or from primary adolescent-onset HD (AOHD). This study aims to compare the pathomorphology of these two HD subtypes with that of a normal control group.
methodsThis retrospective study reviewed patients who underwent periacetabular osteotomy for symptomatic HD between 2013 and 2020. The study included 27 residual HD patients (32 hips) following a previous pelvic osteotomy and 39 AOHD patients (68 hips), compared to 29 age- and sex-matched healthy individuals. Acetabular morphology was assessed using plain radiographs, measuring the lateral and anterior center-edge angle (LCEA/ACEA), Sharp angle, Tönnis angle (TA), acetabular depth ratio (ADR), acetabular head index (AHI), and head lateralization index (HLI). On 2D axial and frontal CT scans, we measured acetabular version (AV), anterior and posterior acetabular sector angle (AASA/PASA), femoral neck shaft angle (NSA) and femoral anteversion (FAV).
resultsBoth HD groups presented frontal and sagittal acetabular dysplasia with lower LCEA (p < 0.001), lower ACEA (p < 0.001), and lateral subluxation, indicated by lower AHI (p < 0.001) and higher HLI (p < 0.001). Compared to AOHD, residual HD demonstrated greater lateralization, with a higher HLI (p = 0.028). In the axial plane, both HD groups had similar deficient anterior coverage, with lower AASA (p < 0.001). However, residual HD exhibited poorer posterior coverage, with a lower PASA (p < 0.001) and a lower AV (p = 0.006). NSA did not differ between groups, but residual HD had excessive FAV compared to the other groups (p < 0.001).
conclusionsAlthough both residual HD and AOHD demonstrated anterior and lateral acetabular deficiencies, residual HD was further characterized by reduced acetabular version, more femoral head lateralization, poorer posterior acetabular support, and excessive FAV.
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