ArticleEuropean radiology2018
Hip shape is symmetric, non-dependent on limb dominance and gender-specific: implications for femoroacetabular impingement. A 3D CT analysis in asymptomatic subjects.
Article in European radiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.
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Who cites it
17 citing papers in PubMed, 1 synthesis or guideline pooled it, 22 citations in OpenAlex.
- Best Practices: Hip Femoroacetabular Impingement.AJR. American journal of roentgenology · 2021Pooled it
- Article
- Relationship between thoracic alignment asymmetry and hip joint alignment during isometric hip rotation: a comparison of femoral head deviation between left and right sides.Journal of physical therapy science · 2026Article
- How Common Is Femoroacetabular Impingement Morphology in Asymptomatic Adults? A 3D CT-Based Insight into Hidden Risk.Journal of clinical medicine · 2025Article
- The lateral hip instability test: Diagnostic accuracy for lateral or posterolateral femoral head undercoverage.Journal of experimental orthopaedics · 2025Article
- Methods for three-dimensional characterization of the acetabulum prior to pelvic reorientation osteotomy: a scoping review.EFORT open reviews · 2024Article
- Effect of lumbosacral transitional vertebra on developmental alterations of the hip: a quantitative investigation of the lumbo-pelvic-hip complex via whole-body computed tomography.Quantitative imaging in medicine and surgery · 2024Article
- A three-dimensional measurement method on MR arthrography of the hip to classify femoro-acetabular impingement.Japanese journal of radiology · 2021Article
- The Lisbon Agreement on Femoroacetabular Impingement Imaging-part 3: imaging techniques.European radiology · 2021Article
- The Lisbon Agreement on femoroacetabular impingement imaging-part 2: general issues, parameters, and reporting.European radiology · 2021Article
- Advances in FAI Imaging: a Focused Review.Current reviews in musculoskeletal medicine · 2020Review
- The Lisbon Agreement on Femoroacetabular Impingement Imaging-part 1: overview.European radiology · 2020Review
- Classifying Cam Morphology by the Alpha Angle: A Systematic Review on Threshold Values.Orthopaedic journal of sports medicine · 2020Review
- CT texture analysis of acetabular subchondral bone can discriminate between normal and cam-positive hips.European radiology · 2020Article
- Quantifying differences in femoral head and neck asphericity in CAM type femoroacetabular impingement and hip dysplasia versus controls using radial 3DCT imaging and volumetric segmentation.The British journal of radiology · 2020Article
- Leg dominance as a risk factor for femoroacetabular impingement syndrome.Journal of hip preservation surgery · 2020Article
- 3D CT segmentation of CAM type femoroacetabular impingement-reliability and relationship of CAM lesion with anthropomorphic features.The British journal of radiology · 2018Article
Corrections and comments
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Authors and funding
10 authors at 7 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo determine the reference intervals (RefInt) of the quantitative morphometric parameters of femoroacetabular impingement (FAI) in asymptomatic hips with computed tomography (CT) and determine their dependence on age, side, limb dominance and sex.
methodsWe prospectively included 590 patients and evaluated 1111 hips with semi-automated CT analysis. We calculated overall, side- and sex-specific parameters for imaging signs of cam [omega and alpha angle (α°)] and pincer-type morphology [acetabular version (ACvers), lateral centre-edge angle (LCEA) and cranio-caudal coverage].
resultsHip shape was symmetrical and did not depend on limb dominance. The 95% RefInt limits were sex-different for all cam-type parameters and extended beyond current abnormal thresholds. Specifically, the upper limits of RefInt for α° at 12:00, 1:30 and 3:00 o'clock positions were 56°, 70° and 58°, respectively, and 45° for LCEA. Acetabular morphology varied between age groups, with a trend toward an LCEA/ACvers increase over time.
conclusionOur morphometric measurements can be used to estimate normal hip morphology in asymptomatic individuals. Notably they extended beyond current thresholds used for FAI imaging diagnosis, which was most pronounced for cam-type parameters. We suggest the need to reassess α° RefInt and consider a 60° threshold for the 12:00/3:00 positions and 65-70° for other antero-superior positions. KEY POINTS: • Hip shape is symmetrical regardless of limb dominance. • Pincer/cam morphology is frequent in asymptomatic subjects (20 and 71%, respectively). • LCEA and acetabular version increases with age (5-7° between opposite age groups). • Femoral morphology is stable after physeal closure (in the absence of pathology). • Alpha and omega angle thresholds should be set according to sex.
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