ArticleJournal of orthopaedic surgery and research2019
Long-term outcomes of a dual-mobility cup and cementless triple-taper femoral stem combination in total hip replacement: a multicenter retrospective analysis.
Article in Journal of orthopaedic surgery and research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02648152 (Multicenter Clinical Observation Using the Cementless Version of the POLARSTEM), which is not on this map. Cited by 17 papers, 2 of them syntheses that pooled it.
What it found
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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.
Multicenter Clinical Observation Using the Cementless Version of the POLARSTEM
Who cites it
17 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Risk factors and modes of failure in the modern dual mobility implant. A systematic review and meta-analysis.BMC musculoskeletal disorders · 2021Pooled it
- Outcomes of dual-mobility total hip arthroplasty versus bipolar hemiarthroplasty for patients with femoral neck fractures: a systematic review and meta-analysis.Journal of orthopaedic surgery and research · 2021Pooled it
- Early Performance of a Collared, Triple-Tapered Cementless Femoral Stem in Primary Total Hip Arthroplasty.Journal of clinical medicine · 2026Article
- Short-term Clinical Outcomes of Primary Total Hip Arthroplasty with the CoreHip Stem.Journal of orthopaedic case reports · 2026Article
- Femoral stress distribution in fully hydroxyapatite-coated cementless versus polished cemented stems with identical geometry: a thermoelastic stress analysis.Archives of orthopaedic and trauma surgery · 2025Article
- Comparison of Short-Term Results of Total Hip Arthroplasty with Polarstem by Dorr Type.Indian journal of orthopaedics · 2025Article
- Optimal Bone Preparation for Triple-Tapered Stems: Does the Sagittal Taper Affect Optimal Femoral Sizing?Arthroplasty today · 2025Article
- Influence of broach surface design of a fully hydroxyapatite coated, double tapered stem on periprosthetic bone mineral density after total hip arthroplasty: a study based on the morphology of the proximal femur.Archives of orthopaedic and trauma surgery · 2024Article
- Femoral stem taper geometry and porous coating in cementless direct anterior primary total hip arthroplasty.Journal of orthopaedics · 2023Article
- The influence of stem alignment on the bone mineral density around the Polarstem following total hip arthroplasty.Archives of orthopaedic and trauma surgery · 2023Article
- Primary Stability of Collared and Collarless Cementless Femoral Stems - A Finite Element Analysis Study.Arthroplasty today · 2023Article
- Survival and performance of a dual tapered-wedge fully HA-coated press fit femoral stem.Archives of orthopaedic and trauma surgery · 2023Article
- Does the Dual Mobility Cup Reduce Dislocation After Primary Total Hip Arthroplasty in Elderly Patients at High Risk of Dislocation?Orthopaedic surgery · 2023Article
- Fully hydroxyapatite-coated compaction broached and triple-tapered stem may reduce the risk of stress shielding after primary total hip arthroplasty.Archives of orthopaedic and trauma surgery · 2022Article
- Use of a Plasma-Sprayed Titanium-Hydroxyapatite Femoral Stem in Hip Arthroplasty in Patients Older than 70 Years. Is Cementless Fixation a Reliable Option in the Elderly?Journal of clinical medicine · 2021Article
- Article
- Modern Dual Mobility Implants in Total Hip Arthroplasty: Stability, Survival, and Ion Safety Evaluation: The Comprehensive Review.JB & JS open accessReview
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe separate design concepts of dual-mobility cups and triple-taper femoral stems were developed to improve survivorship following total hip replacement (THR) by reducing instability/dislocation and enabling enhanced fixation. Successful outcomes at over two decades have been reported with earlier-generation devices based on these concepts. The current study aimed to provide the first long-term results with a unique pairing of later-generation dual-mobility cup and triple-taper cementless femoral stem after a decade of use in patients undergoing THR.
methodsIn this retrospective analysis, records were reviewed for all subjects implanted with this dual-mobility cup/cementless femoral stem combination at three centers between 2002 and 2005. Any subject who had not already had follow-up visit beyond 10 years, was not previously revised, and still living were invited for a single follow-up visit consisting of Merle d'Aubgine Scores, the Western Ontario and McMaster Universities Osteoarthritis (WOMAC) index, and standard radiographs.
resultsThere were 244 THRs available for analysis. At a mean follow-up of 11.9 years, the Kaplan-Meier survivorship (endpoint: revision for any reason) was 99.1% (95% CI, 97.6-99.7) for the stem and 95.9% (95% CI, 93.1-97.6) for the cup. Merle d'Aubigne Scores were significantly improved from baseline and WOMAC scores were in the satisfactory range at the final follow-up. Radiographic analysis revealed no cases of stem subsidence, no cases of bone hypertrophy, 1 (0.4%) case of bone atrophy, and 3 (1.2%) cases of osteolysis around the stem. No subjects had radiolucent lines greater than 1 mm in any femoral Gruen zone. Evidence of cup migration was seen in 1 (0.4%) subject and 1 (0.4%) subject had evidence of osteolysis that was seen in Gruen zones I, II, IV, and V.
conclusionsThis combination of a later-generation dual-mobility cup and cementless triple-taper stem was associated with excellent survivorship and satisfactory functional outcomes at over 10 years follow-up.
trial registrationClinicalTrials.gov, NCT02648152. Date of registration: January 6, 2016. Retrospectively registered.
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