ArticleEuropean journal of radiology open2022
Diagnosis of acetabular retroversion: Three signs positive and increased retroversion index have higher specificity and higher diagnostic accuracy compared to isolated positive cross over sign.
Article in European journal of radiology open, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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Who cites it
21 citing papers in PubMed.
- The lesser trochanter index: detection of increased femoral version in patients with symptomatic hip disease.Journal of orthopaedic surgery and research · 2026Article
- Revision periacetabular osteotomy enhances joint function and activity level after failure of redirectional pelvic osteotomy at skeletal maturity.Bone & joint open · 2026Article
- The Modified Budin View: A Reliable and Accessible Screening Tool for Femoral Version Deformities in Joint-Preserving Hip Surgery.The American journal of sports medicine · 2026Article
- Association between hip joint morphology and acetabular fracture in polytrauma patients: a CT-based case-control study.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2026Article
- Periacetabular osteotomy of the hip: an 8-year follow-up of 96 consecutive cases.Archives of orthopaedic and trauma surgery · 2026Article
- Regional femoral head Hounsfield units mirror acetabular undercoverage in acetabular dysplasia.Journal of experimental orthopaedics · 2026Article
- Natural History of Nonoperatively Treated Borderline Acetabular Dysplasia in Young Adults and Factors Associated With Inferior Functional Outcome.Orthopaedic journal of sports medicine · 2026Article
- Effect of Pelvic Tilt and Rotation on Common Qualitative Acetabular Radiographic Markers: A Three-Dimensional Digitally Reconstructed Radiograph Analysis.Journal of the American Academy of Orthopaedic Surgeons. Global research & reviews · 2026Article
- Complications, Conversion, and Secondary Procedures Following Minimally Invasive Periacetabular Osteotomy: A Single-Surgeon Case Series.Arthroplasty today · 2025Article
- Global Acetabular Retroversion Is Associated With an Increased Risk of Conversion to Total Hip Arthroplasty After Primary Hip Arthroscopic Surgery: A Propensity Score-Matched Analysis With a Minimum 8-Year Follow-up.Orthopaedic journal of sports medicine · 2025Article
- Preliminary observations on the coincidence of femoroacetabular impingement and/or acetabular retroversion with anterior ankle impingement.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2025Article
- Frequency of lumbopelvic malalignment in symptomatic hip instability and impingement - a prospective, diagnostic cohort study.Archives of orthopaedic and trauma surgery · 2025Article
- Ischiofemoral impingement in joint preserving hip surgery: prevalence and imaging predictors.Insights into imaging · 2025Article
- Lumbopelvic hyperlordosis is linked to higher femoral head coverage, lower femoral anteversion and younger age at periacetabular osteotomy.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2025Article
- Greater anterior pelvic tilt and lumbar mobility in females compared to males undergoing periacetabular osteotomy: A matched cohort study.Journal of experimental orthopaedics · 2025Article
- Is Quantitative Radiographic Measurement of Acetabular Version Reliable in Anteverted and Retroverted Hips?Clinical orthopaedics and related research · 2024Article
- How useful are indirect radiographic measurements of hip instability in borderline hip dysplasia? An MRI-based comparison to a healthy cohort.International orthopaedics · 2024Article
- [Femoroacetabular impingement in adolescents].Radiologie (Heidelberg, Germany) · 2023Review
- Psychological Factors as Risk Contributors for Poor Hip Function after Periacetabular Osteotomy.Journal of clinical medicine · 2023Article
- Open and arthroscopic management of femoroacetabular impingement: a review of current concepts.Journal of hip preservation surgery · 2022Review
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesThe crossover-sign (COS) is a radiographic sign for diagnosis of acetabular-retroversion(AR) in patients with femoroacetabular-impingement (FAI) but overestimates AR. Three signs combined with retroversion-index (RI) could potentially improve diagnostic-accuracy.
aims(1)To calculate central acetabular-version (AV, CT/MRI) in patients with isolated positive COS and in patients with three radiographic signs for AR on radiographs (AP).(2)To calculate diagnostic performance of positive COS and of three signs combined with retroversion-index (RI) > 30% on radiographs (AP) to detect global AR (AV < 10°, CT/MRI).
methodsA retrospective, IRB-approved, controlled diagnostic study comparing radiographic signs for AR (AP radiographs) with MRI/CT-based measurement of central AV was performed. 462 symptomatic patients (538 hips) with FAI or hip-dysplasia were compared to control-group (48 hips). Three signs for AR(on radiographs) were analyzed: COS, posterior-wall-sign and ischial-spine-sign. RI (synonym cross-over-index) quantifies overlap of anterior and posterior wall in case of positive COS. Diagnostic performance for COS and for three signs combined with RI > 30% to detect central AV < 10° (global AR) was calculated.
results(1)Central AV was significantly (p < 0.001) decreased (13 ± 6°, CT/MRI) in patients with three signs for AR and RI > 30% on radiographs compared to patients with positive COS (18 ± 7°).(2)Sensitivity and specificity of three signs combined with RI > 30% on radiographs was 85% and 63% (87% and 23% for COS). Negative-predictive-value (NPV) was 94% (93% for COS) to rule out global AR (AV < 10°, CT/MRI). Diagnostic accuracy increased significantly (p < 0.001) from 31% (COS) to 68% using three signs.
conclusionImproved specificity and diagnostic accuracy for diagnosis of global AR can help to avoid misdiagnosis. Global AR can be ruled out with a probability of 94% (NPV) in the absence of three radiographic signs combined with retroversion-index < 30% (e.g. isolated COS positive).
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