Evidence map›Paper›PMID 40357027›Full record

ArticleJournal of experimental orthopaedics2025

Kinematic alignment in Japanese patients shows significant improvement 2 years after total knee replacement surgery.

Takao Yamamoto, Shigenobu Fukushima, Shuji Toyono, Takahiro Miyaji, Taku Nakajima, Yoshihiro Wanezaki, Takashi Ito

Abstract read
In one paragraph

Article in Journal of experimental orthopaedics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

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3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

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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.

Takao YamamotoDepartment of Orthopedic Surgery Yamagata Prefectural Shinjo Hospital Shinjo-shi Yamagata Japan.ORCID https://orcid.org/0000-0002-6141-8545
Shigenobu FukushimaArtificial Joint Center Yamagata Saisei Hospital Yamagata Japan.
Shuji ToyonoArtificial Joint Center Yamagata Saisei Hospital Yamagata Japan.
Takahiro MiyajiArtificial Joint Center Yamagata Saisei Hospital Yamagata Japan.
Taku NakajimaDepartment of Orthopedic Surgery Public Okitama General Hospital Okitama Yamagata Japan.
Yoshihiro WanezakiDepartment of Orthopedic Surgery Yamagata University Faculty of Medicine Yamagata-shi Yamagata Japan.
Takashi ItoDepartment of Orthopedic Surgery Yamagata University Faculty of Medicine Yamagata-shi Yamagata Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: This study aimed to evaluate the 2-year post-operative results of the unrestricted kinematic alignment technique in total knee arthroplasty (TKA) among Japanese patients and understand the potential benefits of this technique. Methods: In total, 207 patients who underwent kinematic alignment in TKA for knee osteoarthritis between 2019 and 2021 were retrospectively reviewed. After applying the exclusion criteria, 164 knees remained for analysis (130 and 34 knees from female and male patients, respectively). The average age and body mass index were 74.5 ± 8.0 years and 26.4 ± 4.1 kg/m Results: After surgery, statistically significant improvements were observed in both knee extension and flexion angles, as well as muscle strength ( Conclusion: In Japanese patients, kinematic alignment in TKA demonstrated significant improvements and promising outcomes over 2 years. Although alignment characteristics prior to arthritis may vary due to ethnic differences, this method-designed to replicate patient-specific alignments-is considered to have achieved favourable outcomes by tailoring to individual alignments. Further research comparing kinematic alignment with conventional alignment techniques could provide more valuable insights. Level of Evidence: Level III.

Indexed as

cinical evaluationsJapanese patientskinematic alignmentradiographic measurementstotal knee arthroplastytwo‐year outcomes

Identifiers

PMID40357027
PMCPMC12066995

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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.