Evidence map›Paper›PMID 29951745›Full record

ArticleEuropean journal of orthopaedic surgery & traumatology : orthopedie traumatologie2018

The effect of flexion alignment in total hip arthroplasty with a cementless tapered-wedge femoral stem.

Junya Yoshitani, Tamon Kabata, Yoshitomo Kajino, Tomoharu Takagi, Takaaki Ohmori, Takuro Ueno, Ken Ueoka, Hiroyuki Tsuchiya

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Article in European journal of orthopaedic surgery & traumatology : orthopedie traumatologie, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
–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

15 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. AI-assisted direct anterior approachFrontiers in bioengineering and biotechnology · 2025
    Article
  6. Article
  7. Article
  8. Clinical and radiographic outcomes of primary total hip arthroplasty with the revelation hip system using density mapping.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2023
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  10. Review
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  12. Article
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  14. Achievement of optimal implant alignment using taper wedge stems with cup-first THA through the MIS antero-lateral approach.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2020
    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

8 authors.

Junya YoshitaniDepartment of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takaramachi, Kanazawa, Ishikawa Prefecture, 920-8641, Japan.
Tamon KabataDepartment of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takaramachi, Kanazawa, Ishikawa Prefecture, 920-8641, Japan. tamonkabata@yahoo.co.jp.
Yoshitomo KajinoDepartment of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takaramachi, Kanazawa, Ishikawa Prefecture, 920-8641, Japan.
Tomoharu TakagiDepartment of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takaramachi, Kanazawa, Ishikawa Prefecture, 920-8641, Japan.
Takaaki OhmoriDepartment of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takaramachi, Kanazawa, Ishikawa Prefecture, 920-8641, Japan.
Takuro UenoDepartment of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takaramachi, Kanazawa, Ishikawa Prefecture, 920-8641, Japan.
Ken UeokaDepartment of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takaramachi, Kanazawa, Ishikawa Prefecture, 920-8641, Japan.
Hiroyuki TsuchiyaDepartment of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takaramachi, Kanazawa, Ishikawa Prefecture, 920-8641, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThe influence of stem sagittal alignment on clinical outcomes is unclear in total hip arthroplasty (THA). The purpose of this study is to assess the relationship between stem sagittal alignment and clinical and radiographic outcomes using 3D-CT. MATERIALS AND

methodsWe performed 370 consecutive primary THAs between 2009 and 2013. After exclusion, 102 hips in 89 patients using single tapered-wedge stem were included. Mean follow-up was 4.7 years. Stem sagittal alignment was measured using CT, and patients were divided into flexion and neutral alignment groups. Clinical and radiographic outcomes were compared between two groups. Furthermore, we evaluated the anterior femoral offset and initial contact state.

resultsThere were no significant differences in clinical or radiographic outcomes between two groups. CT data analysis and multiple regression analysis showed flexion alignment increased anterior femoral offset (AFO) and Gruen zone 4 contact area.

conclusionsThere was no significant difference in clinical or radiographic outcomes between flexion and neutral alignment of the tapered-wedge stem at an average of 4.7 years of follow-up. The increase of AFO and distal contact area in flexion alignment could affect the improvement of impingement-free range of flexion and intraoperative fracture.

Indexed as

Arthroplasty, Replacement, HipHip JointHip ProsthesisAgedFemaleFollow-Up StudiesHumansJapanMaleMiddle AgedOrthopedic EquipmentOutcome and Process Assessment, Health CareProsthesis DesignRange of Motion, ArticularTomography, X-Ray ComputedAnterior femoral offsetSagittal alignmentTapered-wedge stemTotal hip arthroplasty

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Registered trials

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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.