Evidence map›Paper›PMID 34655322›Full record

ArticleArchives of orthopaedic and trauma surgery2023

Influence of lateral hinge fractures on biplanar medial closing-wedge distal femoral osteotomy for valgus knee: a new classification of lateral hinge fracture.

Kenji Fujita, Takeshi Sawaguchi, Kenichi Goshima, Kenji Shigemoto, Shintaro Iwai

Abstract read
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In one paragraph

Article in Archives of orthopaedic and trauma surgery, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
3.8field-weighted citation impact, top 6% 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

18 citing papers in PubMed, 25 citations in OpenAlex.

  1. Article
  2. Article
  3. The Closing Wedge Distal Femoral Osteotomy: A Series of 19 Cases for the Management of Genu Valgum and Genu Varum.Journal of the American Academy of Orthopaedic Surgeons. Global research & reviews · 2026
    Article
  4. [Application progress of customized steel plates in osteotomy and orthopedic treatment of knee osteoarthritis].Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2025
    Review
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  13. Observational
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  15. Distalization of hinge site with use of hinge wire reduces hinge fracture rates in closing wedge distal femoral osteotomy.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 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

5 authors at 2 institutions in 1 country.

Kenji FujitaDepartment of Orthopedic Surgery and Joint Reconstructive Surgery, Toyama Municipal Hospital, 2-1 Imaizumi Hokubu-machi, Toyama, 939-8511, Japan. fkenji76@gmail.com.ORCID http://orcid.org/0000-0002-7378-5270
Takeshi SawaguchiDepartment of Traumatology, Fukushima Medical University, 1 Hikariga-oka, Fukushima, 960-1295, Japan.
Kenichi GoshimaDepartment of Orthopedic Surgery, Kanazawa Munehiro Hospital, 24-30 Sakura-machi, Kanazawa, Ishikawa, 920-0923, Japan.
Kenji ShigemotoDepartment of Orthopedic Surgery and Joint Reconstructive Surgery, Toyama Municipal Hospital, 2-1 Imaizumi Hokubu-machi, Toyama, 939-8511, Japan.
Shintaro IwaiDepartment of Orthopedic Surgery and Joint Reconstructive Surgery, Toyama Municipal Hospital, 2-1 Imaizumi Hokubu-machi, Toyama, 939-8511, Japan.
Toyama City Hospital · JPFukushima Medical University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe purpose of this study was to examine the influence of lateral hinge fractures in medial closing-wedge distal femoral osteotomy (MCWDFO) on bone union.

methodsTwenty-one patients were followed-up for more than 1 year after MCWDFO. The incidence and type of hinge fracture, as well as the course of bone healing, were investigated. Slow healing was defined as bone union was not obtained until 3 months after surgery.

resultsHinge fractures were observed in 12 cases (57%). There were three types of hinge fractures. Type 1: the lateral cortex was completely cut through (4 cases), type 2: the osteotomy line was too proximal (6 cases), and type 3: the hinge point was significantly medial (2 cases). There was a significant difference in the mean correction angles between hinge fracture and no-fracture cases, with the mean angles being 13.8 ± 4.0° and 9.6 ± 3.1°, respectively. Sixty-seven percent (8/12) of cases with hinge fractures developed slow healing. Among the hinge fracture cases, when there was no displacement of the hinge fracture and good contact with the anterior flange, 40% (2/5) of cases developed slow healing. If there was displacement of the hinge or no contact of the anterior flange, 86% (6/7) of cases developed slow healing. In contrast, only 11% (1/9) of subjects who did not have a hinge fracture, developed slow healing. In 67% (6/9) of cases with slow healing, a correction loss of 2° or greater (average: 4.3 degrees valgus) was observed. There were no cases of non-union. Clinical outcomes at 1 year showed no significant difference between the groups with and without hinge fractures.

conclusionsThere is a very high risk of hinge fracture in patients undergoing MCWDFO. Hinge fractures often lead to slow healing and a loss of correction. We recommend the endpoint of the distal lateral cortex of the femur as the ideal hinge point for the prevention of hinge fractures. Bone union is obtained slowly in even all hinge fracture cases without revision surgery. Consequently, surgical results are not affected by the occurrence of hinge fracture at 1 year.

Indexed as

Fractures, BoneOsteoarthritis, KneeHumansKneeKnee JointOsteotomyTibiaBone healingHinge fractureMedial closing-wedge distal femoral osteotomy

Identifiers

PMID34655322
OpenAlexW3207081923

What OpenQuestion holds

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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.