Evidence map›Paper›PMID 28990125›Full record

ArticleInternational orthopaedics2018

Differences in range of motion with the same combined anteversion after total hip arthroplasty.

Takaaki Ohmori, Tamon Kabata, Yoshitomo Kajino, Tadashi Taga, Kazuhiro Hasegawa, Daisuke Inoue, Takashi Yamamoto, Tomoharu Takagi, Junya Yoshitani, Takuro Ueno and 1 more

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Article in International orthopaedics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
2.5field-weighted citation impact, top 11% 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

12 citing papers in PubMed, 19 citations in OpenAlex.

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  12. Effect of changing femoral head diameter on bony and prosthetic jumping angles.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2019
    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

11 authors at 1 institution in 1 country.

Takaaki OhmoriDepartment of Orthopaedic Surgery, Graduate School of Medical Science, Kanazawa University, Takaramachi13-1, Kanazawa, Ishikawa, Japan.
Tamon KabataDepartment of Orthopaedic Surgery, Graduate School of Medical Science, Kanazawa University, Takaramachi13-1, Kanazawa, Ishikawa, Japan. tamonkabata@yahoo.co.jp.
Yoshitomo KajinoDepartment of Orthopaedic Surgery, Graduate School of Medical Science, Kanazawa University, Takaramachi13-1, Kanazawa, Ishikawa, Japan.
Tadashi TagaDepartment of Orthopaedic Surgery, Graduate School of Medical Science, Kanazawa University, Takaramachi13-1, Kanazawa, Ishikawa, Japan.
Kazuhiro HasegawaDepartment of Orthopaedic Surgery, Graduate School of Medical Science, Kanazawa University, Takaramachi13-1, Kanazawa, Ishikawa, Japan.
Daisuke InoueDepartment of Orthopaedic Surgery, Graduate School of Medical Science, Kanazawa University, Takaramachi13-1, Kanazawa, Ishikawa, Japan.
Takashi YamamotoDepartment of Orthopaedic Surgery, Graduate School of Medical Science, Kanazawa University, Takaramachi13-1, Kanazawa, Ishikawa, Japan.
Tomoharu TakagiDepartment of Orthopaedic Surgery, Graduate School of Medical Science, Kanazawa University, Takaramachi13-1, Kanazawa, Ishikawa, Japan.
Junya YoshitaniDepartment of Orthopaedic Surgery, Graduate School of Medical Science, Kanazawa University, Takaramachi13-1, Kanazawa, Ishikawa, Japan.
Takuro UenoDepartment of Orthopaedic Surgery, Graduate School of Medical Science, Kanazawa University, Takaramachi13-1, Kanazawa, Ishikawa, Japan.
Hiroyuki TsuchiyaDepartment of Orthopaedic Surgery, Graduate School of Medical Science, Kanazawa University, Takaramachi13-1, Kanazawa, Ishikawa, Japan.
Kanazawa University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeWe investigated the various impingement angles (including both bony and prosthetic impingement) and impingement types that can occur after THA, even when the same combined anteversion parameter is used. We also investigated the relationship between impingement angle and acetabular morphology or femoral anteversion.

methodsWe evaluated 83 patients with no hip arthritis. We divided them into six groups according to acetabular CE angle (≤15°, >15-≤25°, and >25°) and femoral anteversion (≤20° and >20°). Using three-dimensional templating software, we changed stem and cup anteversion to satisfy a combined anteversion (CA) of 50° in each hip (stem anteversion + cup anteversion = 50°) and investigated the resulting impingement angles.

resultsEven with the same CA, differences in impingement angle occurred: 18.3° ± 7.2° with flexion, 30.2° ± 9.7° with internal rotation at 90° flexion, 20.2° ± 12.5° with extension, and 26.2° ± 7.8° with external rotation. As stem anteversion increased, the impingement type changed from prosthetic impingement to bony impingement in flexion and internal rotation and from bony impingement to prosthetic impingement in extension and external rotation. The flexion angle and internal rotation angle at 90° flexion increased (p < 0.016) as CE angle decreased. There were no significant differences between high and low femoral anteversion.

conclusionsCombined anteversion theory should be used with care because of large differences in impingement angles. A stem anteversion of 30° and cup anteversion of 20° appear to be ideal for obtaining a larger impingement angle under this condition.

Indexed as

AdolescentAdultAgedAged, 80 and overArthroplasty, Replacement, HipCase-Control StudiesFemaleHip JointHip ProsthesisHumansImaging, Three-DimensionalMaleMiddle AgedModels, AnatomicRange of Motion, ArticularTomography, X-Ray ComputedImpingementRange of motionSame combined anteversionTotal hip arthroplasty

Identifiers

PMID28990125
OpenAlexW2763402733

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.