Evidence map›Paper›PMID 29611147›Full record

ArticleJournal of artificial organs : the official journal of the Japanese Society for Artificial Organs2018

Effect of improved navigation performance on the accuracy of implant placement in total hip arthroplasty with a CT-based navigation system.

Ichiro Nakahara, Takayuki Kyo, Yasuo Kuroda, Hidenobu Miki

Abstract read
PubMed Publisher
In one paragraph

Article in Journal of artificial organs : the official journal of the Japanese Society for Artificial Organs, 2018. 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
3.3field-weighted citation impact, top 8% 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, 33 citations in OpenAlex.

  1. Article
  2. Article
  3. Rigid fixation of pelvic tracker essential for accurate cup placement in CT-based navigation total hip arthroplasty.Journal of artificial organs : the official journal of the Japanese Society for Artificial Organs · 2024
    Article
  4. Is bone remodelling around fully hydroxyapatite-coated and tapered-wedge stems related to the stem fixation pattern?European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2024
    Article
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  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Does difference in stem design affect accuracy of stem alignment in total hip arthroplasty with a CT-based navigation system?Journal of artificial organs : the official journal of the Japanese Society for Artificial Organs · 2021
    Article
  16. Accuracy of acetabular cup insertion in an anterolateral supine approach using an accelerometer-based portable navigation system.Journal of artificial organs : the official journal of the Japanese Society for Artificial Organs · 2021
    Article
  17. Article
  18. Total hip arthroplasty planning.EFORT open reviews · 2019
    Review
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

4 authors at 2 institutions in 1 country.

Ichiro NakaharaDepartment of Orthopaedic Surgery, Osaka National Hospital, 2-1-14 oenzaka, Chuo-ku, Osaka, 5400006, Japan. ichiro-n@umin.net.
Takayuki KyoDepartment of Orthopaedic Surgery, Bellland General Hospital, 500-3 Higashiyama, Naka-ku, Sakai-city, Osaka, Japan.
Yasuo KurodaDepartment of Orthopaedic Surgery, Osaka National Hospital, 2-1-14 oenzaka, Chuo-ku, Osaka, 5400006, Japan.
Hidenobu MikiDepartment of Orthopaedic Surgery, Osaka National Hospital, 2-1-14 oenzaka, Chuo-ku, Osaka, 5400006, Japan.
Osaka National Hospital · JPBerurando General Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A computed tomography (CT)-based navigation system is one of the support tools to place implant with appropriate alignment and position in total hip arthroplasty (THA). To determine whether the higher performance of the navigation would further improve the accuracy of implant placement in the clinical setting, we retrospectively compared the navigation accuracy of two different versions of a navigation system. The newer version of the navigation system had an upgraded optical sensor with superior positional accuracy. Navigation accuracy, defined as differences between postoperative measurements on CT images and intraoperative records on the navigation system, of 49 THAs performed with the newer version of the navigation system was compared with that of 49 THAs performed with the older version. With the newer version, the mean absolute accuracy (95% limits of agreement) of implant alignment was 1.2° (± 3.3°) for cup inclination, 1.0° (± 2.4°) for cup anteversion, 2.0° (± 4.9°) for stem anteversion, and 1.1° (± 2.4°) for stem valgus angle. The accuracy of the implant position was 1.5 mm (± 3.1 mm), 1.3 mm (± 3.0 mm), and 1.5 mm (± 3.1 mm) for cup x-, y-, and z-axes, respectively, 1.6 mm (± 3.2 mm), 1.4 mm (± 2.9 mm), and 1.5 mm (± 2.7 mm) for stem x-, y-, and z-axes, respectively, and 2.4 mm (± 4.5 mm) for leg length discrepancy. The values for the newer version were significantly more accurate with less variation compared to those of the older version. With upgraded navigation performance, more accurate implant placement was demonstrated in the clinical setting.

Indexed as

Hip ProsthesisTomography, X-Ray ComputedAgedAged, 80 and overArthroplasty, Replacement, HipFemaleHumansMaleMiddle AgedRetrospective StudiesSurgery, Computer-AssistedTreatment OutcomeAccuracyCT-based navigationImplant alignmentImplant positionTotal hip arthroplasty

Identifiers

PMID29611147
OpenAlexW2795839128

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.