Evidence map›Paper›PMID 33575812›Full record

ArticleDer Orthopade2021

Does the type of surgical approach affect the clinical outcome of total knee arthroplasty?

Ricarda Lechner, Matteo Lazzeri, Wilhelm Oberaigner, Paul Nardelli, Tobias Roth, Paul Köglberger, Martin Krismer, Michael Christian Liebensteiner

Abstract read
In one paragraph

Article in Der Orthopade, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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.

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

2 citing papers in PubMed.

  1. Article
  2. No component loosening of a cementless deep dish rotating platform knee at a 5-year follow-up.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023
    Observational
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

8 authors.

Ricarda LechnerDepartment of Orthopaedics and Traumatology, Medical University Innsbruck, Innsbruck, Austria.
Matteo LazzeriDepartment of Orthopaedics and Traumatology, Medical University Innsbruck, Innsbruck, Austria.
Wilhelm OberaignerInstitut für klinische Epidemiologie, Tirol Kliniken, Innsbruck, Austria.
Paul NardelliDepartment of Orthopaedics and Traumatology, Medical University Innsbruck, Innsbruck, Austria.
Tobias RothDepartment of Orthopaedics and Traumatology, Medical University Innsbruck, Innsbruck, Austria.
Paul KöglbergerDepartment of Orthopaedics and Traumatology, Medical University Innsbruck, Innsbruck, Austria. paul.koeglberger@i-med.ac.at.
Martin KrismerDepartment of Orthopaedics and Traumatology, Medical University Innsbruck, Innsbruck, Austria.
Michael Christian LiebensteinerDepartment of Orthopaedics and Traumatology, Medical University Innsbruck, Innsbruck, Austria.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe aim of the study was to investigate the issue of medial midvastus (MMV) vs. medial parapatellar (MPP) approaches in total knee arthroplasty (TKA). It was hypothesized that the two surgical approaches would produce significantly different results with respect to patient-reported knee score outcome (hypothesis 1), short-term postoperative range of motion (ROM) (hypothesis 2), long-term postoperative ROM (hypothesis 3) and prosthesis survival (hypothesis 4).

methodsA retrospective comparative study design was applied. Data sets were obtained from the state arthroplasty registry. The Western Ontario and McMaster Universities osteoarthritis index (WOMAC) data were analyzed from preoperative and 1 year postoperatively. The ROM data were analyzed for the time points preoperative, postoperative days 4 and 10 and 1 year.

resultsAvailable were 627 cases (407 MMV vs. 220 MPP) and 1 year postoperatively there were no significant differences between groups regarding the WOMAC scores (hypothesis 1). Early postoperatively on days 4 and 10 after TKA there were no differences between groups (p = 0.305 and p = 0.383, respectively, hypothesis 2). Likewise, ROM did not significantly differ between the groups 1 year after TKA (p = 0.338, hypothesis 3). The 5‑year prosthesis survival did not differ between the groups and showed 94.46% (95% confidence interval, CI 90.69-96.73%) in the MMV group and 94.33% (95% CI 89.96-96.83%) in the MPP group (p = 0.664, hypothesis 4).

conclusionBoth surgical approaches produce equivalent clinical results in terms of early postoperative ROM, late postoperative ROM and 1‑year WOMAC. The same prosthesis survival rates can be expected.

Indexed as

Arthroplasty, Replacement, KneeKnee ProsthesisOsteoarthritis, KneeHumansKnee JointRange of Motion, ArticularRetrospective StudiesTreatment OutcomeFunctional outcomeKnee surgeryProsthesis survivalRange of motionSurgical procedures, operative

Identifiers

PMID33575812
PMCPMC8357722

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.