Evidence map›Paper›PMID 30132051›Full record

Trial reportKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2019

Patients undergoing total knee arthroplasty using a contemporary patella-friendly implant are unaware of any differences due to patellar resurfacing.

In Jun Koh, Man Soo Kim, Sueen Sohn, Kwang Yun Song, Nam Yong Choi, Yong In

Abstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 7 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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 7 syntheses or guidelines pooled it.

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  16. Review
  17. Patellar component size effects patellar tilt in total knee arthroplasty with patellar resurfacing.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2021
    Article
  18. Review
  19. Controversial Topics in Total Knee Arthroplasty: A 5-Year Update (Part 1).Journal of the American Academy of Orthopaedic Surgeons. Global research & reviews · 2020
    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

6 authors.

In Jun KohDepartment of Orthopaedic Surgery, St. Paul's Hospital, Seoul, 02559, South Korea.
Man Soo KimDepartment of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, South Korea.
Sueen SohnDepartment of Orthopaedic Surgery, Seoul St. Mary's Hospital, Seoul, 06591, South Korea.
Kwang Yun SongDepartment of Orthopaedic Surgery, Seoul St. Mary's Hospital, Seoul, 06591, South Korea.
Nam Yong ChoiDepartment of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, South Korea.
Yong InDepartment of Orthopaedic Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, South Korea. iy1000@catholic.ac.kr.ORCID http://orcid.org/0000-0002-1374-9964

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeAnterior knee pain after total knee arthroplasty (TKA) is often unexplained, spurring ongoing debates on the need for patellar resurfacing. It was hypothesized that a contemporary patella-friendly implant would restore patellofemoral kinematics more physiologically than outdated implants and that there would be no perceived or clinically demonstrable differences due to resurfacing of patella (RP).

methodsThis prospective bilateral randomized study was undertaken in 49 patients scheduled for the same-day bilateral TKAs. One knee was subjected at random to RP while withholding RP on the opposing side (non-RP). A recently approved single-radius femoral prosthesis featuring a deep, elongate trochlear groove with lateral tilt and a high lateral flange was implanted bilaterally in all patients. Mean follow-up duration was 5 years. Group comparisons were based on patient-reported outcomes [anterior knee pain, Forgotten Joint Score (FJS), and side preference], physician-rated results [Feller patellofemoral (PF) score], radiographic patellar position, patella-related complications, and need for reoperation.

resultsThere were no differences in midterm rates of anterior knee pain (RP 8%; non-RP 4%; n.s.), FJS (all n.s.), or side preference (RP 47%; non-RP 45%; n.s.), nor did the groups differ by Feller PF score (all n.s.) or radiographic patellar position (all n.s.). No secondary resurfacings of non-RP or RP revisions were required.

conclusionsPatients were incapable of distinguishing whether RP was done, casting doubt on its benefits. Surgeons may thus forego RP during TKA when using contemporary patella-friendly TKA implants. LEVEL OF EVIDENCE: Therapeutic study, Level I.

Indexed as

Knee ProsthesisPerceptionAgedArthroplasty, Replacement, KneeBiomechanical PhenomenaFemaleFemurHumansKnee JointMaleMiddle AgedOsteoarthritis, KneePain MeasurementPatellaPrevalenceProspective StudiesOsteoarthritisPatellaPatella-friendly designPatellar resurfacingTotal knee replacement

Identifiers

PMID30132051

What OpenQuestion holds

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Registered trials

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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.