ArticleJournal of clinical orthopaedics and trauma2021
Can we trust combined anteversion and Lewinnek safe zone to avoid hip prosthesis dislocation?
Article in Journal of clinical orthopaedics and trauma, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 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
9 citing papers in PubMed, 14 citations in OpenAlex.
- Femoral stem alignment and post-operative patient satisfaction: a retrospective analysis of total hip arthroplasty using computer-assisted equipment for placing cups.International orthopaedics · 2026Article
- Temporal Evolution and Stationary Point Mechanisms of Pelvic Characteristic Angles Throughout the Sit-to-Stand Cycle.Orthopaedic surgery · 2026Article
- Robotic-Assisted Total Hip Arthroplasty Is Associated With Fewer Intraoperative Conversions From a Neutral to a Non-Neutral Acetabular Liner.HSS journal : the musculoskeletal journal of Hospital for Special Surgery · 2026Article
- Effect of combined anteversion on outcomes in total hip replacement.Bioinformation · 2026Article
- Patient preoperative positioning for THA affects postoperative acetabular cup angle and leg length discrepancy: a prospective case series.Scientific reports · 2025Article
- Long-Term Outcomes of Functional Cup Positioned Total Hip Arthroplasty in Asian Ankylosing Spondylitis Patients.Journal of the American Academy of Orthopaedic Surgeons. Global research & reviews · 2025Article
- Article
- Cemented or uncemented fixation: Which allows a more acceptable prosthetic femoral version in total hip arthroplasty?Journal of orthopaedic surgery and research · 2023Article
- Impact of Cup Anteversion and Hip-Spine Relationship on Femoral Neck Notching in Dual Mobility Total Hip Arthroplasty.JB & JS open accessArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionDislocation is one of the most common complications after primary total hip arthroplasty (THA). Combined anteversion (CA) is currently considered one of the most important measures of stability for THA. Thus, the aim of this study is to determine the association between a correct CA after THA and hip prosthesis dislocation, and to analyze the reliability of the Lewinnek safe zone parameters. MATERIAL AND
methodsThis is a non-interventional retrospective study, carried out at a tertiary hospital in Spain. 2489 primary THA in 2147 patients between January 2008 and December 2014 were identified. Clinical, biological and radiographic data, including cup inclination and cup and femoral anteversion, were analyzed of all patients who developed a hip prosthesis dislocation.
resultsThirty-four patients met the eligibility criteria to be analyzed. In 73.5% (25/34) of cases, acetabular anteversion (AV) was correct, with a mean AV of 15.1° ± 9.4°. Femoral anteversion (FA) was considered correct only in 38.2% (13/34) of the dislocated THA, with a mean FA of 8.4° ± 17.2°. Sixteen of these 34 patients (47.0%) presented a correct CA, with a mean CA of 24.2° ± 21.0°. Nineteen hips (55.8%) were within the Lewinnek safe zone. Moreover, eleven patients (32.3%) developed a dislocation even though components were within the Lewinnek safe zone and presented a correct CA.
conclusionOur findings suggest that even when the THA components are positioned within a correct CA and in the Lewinnek safe zone, hip prosthesis dislocations can occur in a not inconsiderable percentage of the cases. Thus, further radiological and clinical analysis should be done to identify potential reasons for hip prosthesis dislocation.
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.