Evidence map›Paper›PMID 23007412›Full record

SynthesisKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2013

Fixed- versus mobile-bearing unicondylar knee arthroplasty: are failure modes different?

Tao Cheng, Daoyun Chen, Chen Zhu, Xiaoyun Pan, Xin Mao, Yongyuan Guo, Xianlong Zhang

Registry-linked trialAbstract readComparative StudyMeta-AnalysisSystematic Review
PubMed Publisher
In one paragraph

Synthesis in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03447626 (Post-Market Study of Robotic-Arm Assisted Unicompartmental Knee Arthroplasty in Comparison to Traditional UKA), which is not on this map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from 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.

2 · The registry

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.

NCT03447626 completednot on this mapstarted 2019, after this paper: background citation

Post-Market Study of Robotic-Arm Assisted Unicompartmental Knee Arthroplasty in Comparison to Traditional UKA (Fixed and Mobile Bearings)

TypeobservationalSponsorWashington University School of MedicineRan2019 to 2024Enrolled486ConditionsArthritisArmsMAKO Robotic UKA
3 · Its place in the literature

Who cites it

20 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Fixed- versus mobile-bearing UKA: a systematic review and meta-analysis.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2015
    Pooled it
  3. Trial
  4. Article
  5. Article
  6. Lateral unicompartmental knee arthroplasty: is really a good option?Archives of orthopaedic and trauma surgery · 2024
    Article
  7. Review
  8. Article
  9. Review
  10. Article
  11. Review
  12. Article
  13. Review
  14. Article
  15. Low implant migration of the SIGMAKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2018
    Article
  16. Early functional outcome after lateral UKA is sensitive to postoperative lower limb alignment.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2017
    Article
  17. Review
  18. Article
  19. Unicompartmental knee replacement - Current perspectives.Journal of clinical orthopaedics and trauma
    Review
  20. Unicondylar knee arthroplasty: Key concepts.Journal of clinical orthopaedics and trauma
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Tao ChengDepartment of Orthopaedic Surgery, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University School of Medicine, 600 Yisan Road, Shanghai, 200233, People's Republic of China.
Daoyun Chen
Chen Zhu
Xiaoyun Pan
Xin Mao
Yongyuan Guo
Xianlong Zhang

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeAn ongoing controversy exists on whether mobile-bearing design is superior over fixed-bearing design in unicondylar knee arthroplasties (UKAs). The present study conducted a systematic review to ascertain differences in performance between fixed- and mobile-bearing designs in UKAs.

methodsA literature search was performed in PubMed, Embase, Scopus and the Cochrane Library. A total of 9 comparative studies involving 915 knees comparing outcomes of mobile-bearing UKAs with fixed-bearing UKAs were included in the current analysis. Outcomes of interest included knee function, quality of life, radiographic outcomes, reasons and incidence of reoperation, timing of failures, and survivorship.

resultsThe results presented no significant differences between the two designs in terms of knee scores, range of motion, limb alignment, implant positioning, incidence of radiolucent lines and overall reoperation rates. However, their differences have been noted in their modes and timing of failures. Early failures are related to the risk of bearing dislocation in the mobile-bearing design. In contrast, later failures are related to the risk of polyethylene wear in the fixed-bearing design.

conclusionsThe available evidence has not confirmed the advantage of mobile-bearing UKAs over fixed-bearing UKAs but pointed out specific modes of failure.

Indexed as

Arthroplasty, Replacement, KneeKnee ProsthesisProsthesis FailureAdultAgedAged, 80 and overFemaleHumansJoint DiseasesKnee JointMaleMiddle AgedProsthesis Design

Identifiers

PMID23007412

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.