Evidence map›Paper›PMID 33710448›Full record

ArticleArchives of orthopaedic and trauma surgery2022

Bicompartmental, medial and patellofemoral knee replacement might be able to maintain unloaded knee kinematics.

Daiwei Yao, Imran Akram, Kiriakos Daniilidis, Luc Labey, Bernardo Innocenti, Carsten Tibesku

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In one paragraph

Article in Archives of orthopaedic and trauma surgery, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed, 1 pooled it
0.6field-weighted citation impact, top 33% of its field
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

3 citing papers in PubMed, 1 synthesis or guideline pooled it, 6 citations in OpenAlex.

  1. Pooled it
  2. Current status of bicompartmental arthroplasty.Arthroplasty (London, England) · 2025
    Review
  3. Article
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 at 5 institutions in 2 countries.

Daiwei Yao *Department of Orthopaedic Surgery, Hannover Medical School, Anna-von-Borries-Straße 1-7, 30625, Hannover, Germany. daiwei.yao@diakovere.de.
Imran Akram *Orthopaedic Traumatology Centre Regensburg, Paracelsusstraße 2, 93053, Regensburg, Germany.
Kiriakos DaniilidisOrthopaedic Traumatology Centre Regensburg, Paracelsusstraße 2, 93053, Regensburg, Germany. straubing@fusspraxis.bayern.
Luc LabeyDepartment of Mechanical Engineering, KU Leuven, Kleinhoefstraat 4, 2440, Geel, Belgium.
Bernardo InnocentiBio, Electro, and Mechanical Systems Department (BEAMS), Université Libre de Bruxelles, Bruxelles, Belgium.
Carsten TibeskuKniePraxis Straubing, Bahnhofplatz. 1, 94315, Straubing, Germany.
University Hospital Regensburg · DEKU Leuven · BEMedizinische Hochschule Hannover · DEStadtwerke Straubing (Germany) · DEUniversité Libre de Bruxelles · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionUnicompartmental knee arthroplasty (UKA) and total knee arthroplasty (TKA) are standard procedures for treating knee joint arthritis. Neither UKA nor TKA seems to be optimally suited for patients with bicompartmental osteoarthritis that affects only the medial and patellofemoral compartments. A bicompartmental knee arthroplasty (BKA) was designed for this patient group. This study aimed to compare the effectiveness of a BKA and TKA in restoring the kinematics of the knee joint. MATERIALS AND

methodsIn this in vitro study, three types of knee arthroplasties (BKA, posterior cruciate ligament-retaining, and posterior cruciate ligament-resecting TKA) were biomechanically tested in six freshly frozen human cadaveric specimens. Complete three-dimensional kinematics was analyzed for each knee arthroplasty during both passive and loaded conditions in a validated knee kinematics rig. Infrared motion capture cameras and retroreflective markers were used for recording data.

resultsNo significant differences could be found between the three types of arthroplasties. However, similar kinematic changes between BKA and a native knee joint were documented under passive conditions. However, in a weight-bearing mode, a significant decrease in femoral rotation during the range of motion was found in arthroplasties compared to the native knee, probably caused by contraction of the quadriceps femoris muscle, which leads to a decrease in the anterior translation of the tibia.

conclusionsKinematics similar to that of the natural knee can be achieved by BKA under passive conditions. However, no functional advantage of BKA over TKA was detected, which suggests that natural knee kinematics cannot be fully imitated by an arthroplasty yet. Further prospective studies are required to determine the anatomic and design factors that might affect the physiologic kinematics.

Indexed as

Arthroplasty, Replacement, KneeKnee ProsthesisPosterior Cruciate LigamentBiomechanical PhenomenaHumansKnee JointRange of Motion, ArticularBicompartmental knee arthroplastyCruciate ligament-resecting posterior-stabilized TKACruciate-retaining TKATotal knee arthroplasty

Identifiers

PMID33710448
OpenAlexW3134328917

What OpenQuestion holds

Textmetadata
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.