ArticleOrthopaedic journal of sports medicine2021
Posterior Extra-articular Ischiofemoral Impingement Can Be Caused by the Lesser and Greater Trochanter in Patients With Increased Femoral Version: Dynamic 3D CT-Based Hip Impingement Simulation of a Modified FABER Test.
Article in Orthopaedic journal of sports medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
25 citing papers in PubMed, 39 citations in OpenAlex.
- Effects of repeated squat movements on the results of Craig's test to determine hip anteversion/retroversion.Journal of physical therapy science · 2026Article
- What hip and spinopelvic characteristics are associated with ischiofemoral impingement?Bone & joint open · 2026Article
- Reliability of fast T1 VIBE Dixon MRI for femoral version measurement in FAI patients: A comparative study with CT.European journal of radiology open · 2026Article
- Femoral rotational osteotomy for posterior hip impingement in young adults with increased femoral version.International orthopaedics · 2025Article
- Magnetic Resonance Imaging-Based 3-Dimensional Models of the Pelvis and Hip Using Machine Learning for Automatic Bone Segmentation in a Dynamic Hip Impingement Simulation.Orthopaedic journal of sports medicine · 2025Article
- Normal range of femoral version for different measurement methods on CT or MRI-scoping review of normal femoral version.Journal of hip preservation surgery · 2025Article
- Ischiofemoral impingement in joint preserving hip surgery: prevalence and imaging predictors.Insights into imaging · 2025Article
- The Effect of Overall Limb Torsion on Functional Femoral Version and Its Functional and Biomechanical Implications on Lower Limb Axial Anatomy: A Study on CT and EOS Imaging.Journal of clinical medicine · 2025Article
- CT-guided infiltration of the ischiofemoral space in young patients with ischiofemoral impingement is an effective diagnostic tool.Insights into imaging · 2024Article
- What Is the Influence of Femoral Version on Size, Tear Location, and Tear Pattern of the Acetabular Labrum in Patients With FAI?Clinical orthopaedics and related research · 2024Article
- MRI 3D simulation of hip motion in female patients with and without ischiofemoral impingement.Skeletal radiology · 2024Article
- Hip MRI in flexion abduction external rotation for assessment of the ischiofemoral interval in patients with hip pain-a feasibility study.Insights into imaging · 2023Article
- [Femoroacetabular impingement in adolescents].Radiologie (Heidelberg, Germany) · 2023Review
- Posterior Hip Impingement at Maximal Hip Extension in Female Patients With Increased Femoral Version or Increased McKibbin Index and Its Effect on Sports Performance.Orthopaedic journal of sports medicine · 2023Article
- [Preoperative MR imaging for hip dysplasia : Assessment of associated deformities and intraarticular pathologies].Orthopadie (Heidelberg, Germany) · 2023Review
- The Female Pelvis Is Associated with a Lateralized Ischium and a Reduced Ischiofemoral Space.Journal of clinical medicine · 2023Article
- Large Hip Impingement Area and Subspine Hip Impingement in Patients With Absolute Femoral Retroversion or Decreased Combined Version.Orthopaedic journal of sports medicine · 2023Article
- Femoral impingement in maximal hip flexion is anterior-inferior distal to the cam deformity in femoroacetabular impingement patients with femoral retroversion : implications for hip arthroscopy.Bone & joint research · 2023Article
- Back to the Future with Osteotomies around the Hip.Journal of clinical medicine · 2022Article
- [Treatment strategies for the combination of hip dysplasia, femoroacetabular impingement and malrotation of the proximal femur : How much should be corrected?]Orthopadie (Heidelberg, Germany) · 2022Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
11 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundPosterior extra-articular hip impingement has been described for valgus hips with increased femoral version (FV). These patients can present clinically with lack of external rotation (ER) and extension and with a positive posterior impingement test. But we do not know the effect of the combination of deformities, and the impingement location in early flexion is unknown. PURPOSE: To evaluate patient-specific 3-dimensional computed tomography (3D CT) scans of hips with increased FV and control hips for differences in range of motion, location and prevalence of osseous posterior intra- and extra-articular hip impingement. STUDY
designCase series; Level of evidence, 4.
methodsOsseous 3D models based on segmentation of 3D CT scans were analyzed for 52 hips (38 symptomatic patients) with positive posterior impingement test and increased FV (>35°). There were 26 hips with an increased McKibbin instability index >70 (unstable hips). Patients were mainly female (96%), with an age range of 18 to 45 years. Of them, 21 hips had isolated increased FV (>35°); 22 hips had increased FV and increased acetabular version (AV; >25°); and 9 valgus hips (caput-collum-diaphyseal angle >139°) had increased FV and increased AV. The control group consisted of 20 hips with normal FV, normal AV, and no valgus (caput-collum-diaphyseal angle <139°). Validated 3D CT-based collision detection software for impingement simulation was used to calculate impingement-free range of motion and location of hip impingement. Surgical treatment was performed after the 3D CT-based impingement simulation in 27 hips (52%).
resultsHips with increased FV had significantly (
conclusionPosterior extra-articular ischiofemoral hip impingement can be caused by the lesser and greater trochanter or the intertrochanteric region. We recommend performing the modified FABER test during clinical examination in addition to the posterior impingement test for female patients with high FV. In addition, 3D CT can help for surgical planning, such as femoral derotation osteotomy and/or hip arthroscopy or resection of the lesser trochanter.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.