Trial reportActa orthopaedica2015
Mobile- vs. fixed-bearing total knee replacement.
Trial report in Acta orthopaedica, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 5 of them syntheses that pooled it.
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
21 citing papers in PubMed, 5 syntheses or guidelines pooled it, 42 citations in OpenAlex.
- Factors influencing periprosthetic bone mineral density in total knee arthroplasty: a systematic review.Archives of orthopaedic and trauma surgery · 2024Pooled it
- No difference between mobile and fixed bearing in primary total knee arthroplasty: a meta-analysis.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022Pooled it
- Mobile-bearing versus fixed-bearing total knee arthroplasty: a meta-analysis of randomized controlled trials.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2022Pooled it
- RSA migration of total knee replacements.Acta orthopaedica · 2018Pooled it
- Cross-linked versus conventional polyethylene for total knee arthroplasty: a meta-analysis.Journal of orthopaedic surgery and research · 2016Pooled it
- Are There Differences in Micromotion on Radiostereometric Analysis Between Bicruciate and Cruciate-retaining Designs in TKA? A Randomized Controlled Trial.Clinical orthopaedics and related research · 2020Trial
- Migration and clinical outcome of mobile-bearing versus fixed-bearing single-radius total knee arthroplasty.Acta orthopaedica · 2018Trial
- Similar migration in computer-assisted and conventional total knee arthroplasty.Acta orthopaedica · 2017Trial
- The relationship between stress shielding, bone density changes and implant migration, failure and fracture after total knee arthroplasty: A systematic review.Journal of experimental orthopaedics · 2025Review
- Changes in Periprosthetic Bone Mineral Density Following Arthroplasty: An In-Depth Review and Current Perspectives.Current osteoporosis reports · 2025Review
- Mobile-bearing prosthesis suppresses the postoperative rotational mismatch and improves patient-reported outcome measurements better than fixed-bearing prosthesis: rotational analysis by 3D measurement in total knee arthroplasty.Archives of orthopaedic and trauma surgery · 2023Article
- Two different posterior-stabilized mobile-bearing TKA designs: navigator evaluation of intraoperative kinematic differences.Musculoskeletal surgery · 2021Article
- [Progress of change in bone mineral density after knee arthroplasty].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2021Article
- Malrotation of the fixed-bearing posterior stabilized total knee prosthesis causes a postoperative rotational mismatch between the femur and tibia.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020Article
- Does Unicondylar Knee Arthroplasty Affect Tibial Bone Strain? A Paired Cadaveric Comparison of Fixed- and Mobile-bearing Designs.Clinical orthopaedics and related research · 2020Article
- RSA-tested TKA Implants on Average Have Lower Mean 10-year Revision Rates Than Non-RSA-tested Designs.Clinical orthopaedics and related research · 2020Observational
- New design total knee arthroplasty shows medial pivoting movement under weight-bearing conditions.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2019Article
- Is there consensus regarding surgical treatment of bone sarcomas?World journal of orthopedics · 2018Article
- Low implant migration of the SIGMAKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2018Article
- No differences between fixed- and mobile-bearing total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2017Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
background and purposeIt is unclear whether mobile-bearing (MB) total knee arthroplasties reduce the risk of tibial component loosening compared to fixed-bearing (FB) designs. This randomized study investigated implant migration, periprosthetic bone mineral density (BMD), and patient-reported outcomes (Oxford knee score)-all at 2 years-for the P.F.C. Sigma Cruciate Retaining total knee arthroplasty. PATIENTS AND
methods50 osteoarthritis patients were allocated to either FB or MB tibial articulation. RESULTS AND
interpretationAt 2 years, the mean total translation (implant migration) was higher for the FB implant (0.30 mm, SD 0.22) than for the MB implant (0.17 mm, SD 0.09) (p = 0.04). BMD decreased between baseline and 1-year follow-up. At 2-year follow-up, BMD was close to the baseline level. The knee scores of both groups improved equally well. The FB tibial implant migrated more than the MB, but this was not clinically significant. The mobile polyethylene presumably partly absorbs the force transmitted to the metal tibial tray, thereby reducing micromotion.
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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.