Evidence mapPaperPMID 32374428Full record

ArticleJournal of orthopaedic research : official publication of the Orthopaedic Research Society2020

Joint line elevation and tibial slope are associated with increased polyethylene wear in cruciate-retaining total knee replacement.

Robin Pourzal, Johannes Cip, Elmira Rad, Michel P Laurent, Richard A Berger, Joshua J Jacobs, Markus A Wimmer

Registry-linked trialAbstract read
In one paragraph

Article in Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05482438 (INFLUENCE OF SELECTED CLINICAL AND IMPLANT FACTORS ON THE RATE AND DISTRIBUTION OF WEAR OF POLYETHYLENE INSERT OF THE ARTIFICIAL KNEE JOINT), which is not on this map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
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.

NCT05482438 unknown statusnot on this mapstarted 2022, after this paper: background citation

Influence of selected clinical and implant factors on the rate and distribution of wear of polyethylene insert of the artificial knee joint

TypeobservationalSponsorValdoltra Orthopedic HospitalRan2022 to 2023Enrolled60ConditionsEvaluation of Polyethylene Wear After Failed TKAArmsPolyethylene
3 · Its place in the literature

Who cites it

16 citing papers in PubMed.

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  12. [Effect of prosthetic joint line installation height errors on insert wear in unicompartmental knee arthroplasty].Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi · 2023
    Article
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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.

Robin PourzalDepartment of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois.ORCID 0000-0001-9610-4864
Johannes CipDepartment of Paediatric Orthopaedics, Children's Hospital of Eastern Switzerland, St. Gallen, Switzerland.
Elmira RadDepartment of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois.
Michel P LaurentDepartment of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois.
Richard A BergerDepartment of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois.
Joshua J JacobsDepartment of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois.
Markus A WimmerDepartment of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois.ORCID 0000-0001-6169-3873

Funding

NIAMS NIH HHS R01 AR059843
6 · The paper itself

Abstract

The purpose of this retrieval study was to determine the effect of implant positioning on wear, taking patient-related factors into account. Therefore, the volumetric material loss of 59 retrieved tibial liners was quantitatively determined using a coordinate measuring-machine. All retrievals were made of the same polyethylene and design by a single manufacturer. Using time in-situ and linear regression, a wear rate for each liner was determined and corrected for bedding-in. Backside damage was qualitatively scored. The following implant positioning parameters were obtained from radiographs: anatomical lateral-distal femoral angle, anatomical medial-proximal tibial angle, femoral tilt angle, and posterior tibial slope. The patella position was assessed by the Blackburne-Peel index and the Insall-Salvati ratio. Unlike the Insall-Salvati ratio, the Blackburne-Peel index is known to detect surgical joint line elevation. Using general linear modeling the most impactful factors on wear rate and backside damage was determined, thereby taking patient demographic factors into account. The mean volumetric wear rate was 11.6 mm

Indexed as

Arthroplasty, Replacement, KneeAgedFemaleHumansKnee ProsthesisMaleMiddle AgedPolyethyleneTibiaPolyethyleneimplant retrieval analysisjoint line elevationpolyethylene weartotal knee arthroplastywear volume

Identifiers

PMID32374428
PMCPMC7329363

What Socratic holds

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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 Socratic graph.