ArticleHip & pelvis2025
Factors Affecting Early Implant Subsidence after Arthroplasty Using a Cementless Femoral Stem for Displaced Femoral Neck Fracture.
Article in Hip & pelvis, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
1 author.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Purpose: Use of cementless femoral stems for treatment of displaced femoral neck fractures is increasing; however, factors influencing early stability remain uncertain. The aim of this study was to identify patient-, morphology-, and surgery-related determinants of early subsidence using a single tapered, proximally porous-coated cementless stem. Materials and Methods: Patients who underwent cementless bipolar hemiarthroplasty (BHA) or total hip arthroplasty (THA) for displaced femoral neck fractures between September 2021 and August 2022 were reviewed retrospectively. Analysis was performed on standardized radiographs taken immediately postoperatively and at 3 and 6 months. Engh's method was used for measurement of stem migration, with ≥5 mm defined as significant. Femoral morphology (Dorr type), bone mineral density (BMD), stem alignment, and canal fill ratio (CFR) were assessed. Pearson correlation and multivariate regression were performed for identification of independent determinants of subsidence. Results: Eighty-six patients met inclusion criteria, and 8.14% showed significant subsidence. Age, BMI, ASA class, fracture pattern, Dorr type, Koval grade, BMD, and operation type showed no association with subsidence. Male sex and larger stem size showed association with greater early subsidence. Varus alignment showed the strongest association, whereas greater metaphyseal fill (high CFR) was protective. Conclusion: Early subsidence of cementless stems in femoral neck fractures is driven primarily by modifiable surgical factors. Achieving neutral alignment and adequate metaphyseal fill markedly reduces early migration, while the impact of demographic and bone-quality variables is limited. Optimizing these technical parameters may enhance initial stability in cementless arthroplasty.
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.