Evidence map›Paper›PMID 28077396›Full record

ArticleBone & joint research2017

The effects of kinematically aligned total knee arthroplasty on stress at the medial tibia: A case study for varus knee.

S Nakamura, Y Tian, Y Tanaka, S Kuriyama, H Ito, M Furu, S Matsuda

Abstract read
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Article in Bone & joint research, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing 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

42 citing papers in PubMed.

  1. Trial
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  4. Kinematic alignment doesn't tell the whole story: It's time for kinetic alignment.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2025
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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.

S NakamuraDepartment of Orthopedic Surgery, Kyoto University, Graduate School of Medicine, 54 Shogoinkawaharacho, Sakyo-ku, Kyoto 606-8507, Japan shnk@kuhp.kyoto-u.ac.jp.
Y TianDepartment of Orthopedic Surgery, Kyoto University, Graduate School of Medicine, 54 Shogoinkawaharacho, Sakyo-ku, Kyoto 606-8507, Japan.
Y TanakaDepartment of Orthopedic Surgery, Kyoto University, Graduate School of Medicine, 54 Shogoinkawaharacho, Sakyo-ku, Kyoto 606-8507, Japan.
S KuriyamaDepartment of Orthopedic Surgery, Kyoto University, Graduate School of Medicine, 54 Shogoinkawaharacho, Sakyo-ku, Kyoto 606-8507, Japan.
H ItoDepartment of Orthopedic Surgery, Kyoto University, Graduate School of Medicine, 54 Shogoinkawaharacho, Sakyo-ku, Kyoto 606-8507, Japan.
M FuruDepartment of Orthopedic Surgery, Kyoto University, Graduate School of Medicine, 54 Shogoinkawaharacho, Sakyo-ku, Kyoto 606-8507, Japan.
S MatsudaDepartment of Orthopedic Surgery, Kyoto University, Graduate School of Medicine, 54 Shogoinkawaharacho, Sakyo-ku, Kyoto 606-8507, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesLittle biomechanical information is available about kinematically aligned (KA) total knee arthroplasty (TKA). The purpose of this study was to simulate the kinematics and kinetics after KA TKA and mechanically aligned (MA) TKA with four different limb alignments. MATERIALS AND

methodsBone models were constructed from one volunteer (normal) and three patients with three different knee deformities (slight, moderate and severe varus). A dynamic musculoskeletal modelling system was used to analyse the kinematics and the tibiofemoral contact force. The contact stress on the tibial insert, and the stress to the resection surface and medial tibial cortex were examined by using finite element analysis.

resultsIn all bone models, posterior translation on the lateral side and external rotation in the KA TKA models were greater than in the MA TKA models. The tibiofemoral force at the medial side was increased in the moderate and severe varus models with KA TKA. In the severe varus model with KA TKA, the contact stress on the tibial insert and the stress to the resection surface and to the medial tibial cortex were increased by 41.5%, 32.2% and 53.7%, respectively, compared with MA TKA, and the bone strain at the medial side was highest among all models.

conclusionNear normal kinematics was observed in KA TKA. However, KA TKA increased the contact force, stress and bone strain at the medial side for moderate and severe varus knee models. The application of KA TKA for severe varus knees may be inadequate.Cite this article: S. Nakamura, Y. Tian, Y. Tanaka, S. Kuriyama, H. Ito, M. Furu, S. Matsuda. The effects of kinematically aligned total knee arthroplasty on stress at the medial tibia: A case study for varus knee. Bone Joint Res 2017;6:43-51. DOI: 10.1302/2046-3758.61.BJR-2016-0090.R1.

Indexed as

Computer simulationContact stressFinite element analysisKinematic alignmentTotal knee arthroplasty

Identifiers

PMID28077396
PMCPMC5301901

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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.