Evidence map›Paper›PMID 31834164›Full record

Trial reportClinical orthopaedics and related research2020

Does An Augmented Reality-based Portable Navigation System Improve the Accuracy of Acetabular Component Orientation During THA? A Randomized Controlled Trial.

Hiroyuki Ogawa, Kenji Kurosaka, Atsuko Sato, Naoyuki Hirasawa, Masaaki Matsubara, Sachiyuki Tsukada

Open access · greenAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Clinical orthopaedics and related research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed, 5 pooled it
5.1field-weighted citation impact, top 4% 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

52 citing papers in PubMed, 5 syntheses or guidelines pooled it, 98 citations in OpenAlex.

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  3. CT-based navigation for total hip arthroplasty: a meta-analysis.European journal of medical research · 2023
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  5. Imageless navigation for primary total hip arthroplasty: a meta-analysis study.Journal of orthopaedics and traumatology : official journal of the Italian Society of Orthopaedics and Traumatology · 2022
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Hiroyuki OgawaH. Ogawa, K. Kurosaka, N. Hirasawa, S. Tsukada, Department of Orthopaedic Surgery, Houksuikai Kinen Hospital, Ibaraki Japan.
Kenji KurosakaH. Ogawa, K. Kurosaka, N. Hirasawa, S. Tsukada, Department of Orthopaedic Surgery, Houksuikai Kinen Hospital, Ibaraki Japan.
Atsuko SatoA. Sato, M. Matsubara, Department of Orthopaedic Surgery, Nissan Tamagawa Hospital, Tokyo, Japan.
Naoyuki HirasawaH. Ogawa, K. Kurosaka, N. Hirasawa, S. Tsukada, Department of Orthopaedic Surgery, Houksuikai Kinen Hospital, Ibaraki Japan.
Masaaki MatsubaraA. Sato, M. Matsubara, Department of Orthopaedic Surgery, Nissan Tamagawa Hospital, Tokyo, Japan.
Sachiyuki TsukadaH. Ogawa, K. Kurosaka, N. Hirasawa, S. Tsukada, Department of Orthopaedic Surgery, Houksuikai Kinen Hospital, Ibaraki Japan.
Nissan Tamagawa Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWe developed an augmented reality (AR)-based portable navigation system in which the surgeon can view the pelvic plane and placement angle of an acetabular cup on the display of a smartphone during THA. QUESTIONS/PURPOSES: (1) Is acetabular component placement more accurate using the AR-based portable navigation system compared with the conventional freehand technique? (2) Is intraoperative measurement of placement angle more accurate when using the AR-based portable navigation system compared with a goniometer?

methodsForty-six patients were randomly assigned to undergo acetabular cup placement during THA using the AR-based portable navigation system (AR navigation group) or placement of a mechanical alignment guide (conventional group). All surgeries were performed with the patient in the lateral decubitus position. We compared the absolute value of the difference between the targeted placement angle and postoperative measured placement angle between the groups using two types of imaging (radiography and CT).

resultsIn terms of radiographic inclination, the mean differences between the targeted placement angle and postoperative measured angle were smaller in the AR navigation group than in the conventional group for both radiographs and CT images (2.3° ± 1.4° versus 3.9° ± 2.4°, respectively; p = 0.009 and 1.9° ± 1.3° versus 3.4° ± 2.6°, respectively; p = 0.02). There were no differences in radiographic anteversion between the two groups. No complications were associated with the use of the AR-based portable navigation system.

conclusionsThis system yielded no differences in acetabular anteversion accuracy, and no clinically important differences in acetabular inclination. Therefore, at this time we cannot recommend this device as its costs and risks cannot be justified based on the absence of a clinically meaningful difference in cup placement accuracy. Although we detected no complications, this was a small series, and this approach adds both surgical time and pins in the ilium. LEVEL OF EVIDENCE: Level I, therapeutic study.

Indexed as

Augmented RealityHip ProsthesisAcetabulumAdultAgedAged, 80 and overArthroplasty, Replacement, HipFemaleFemur Head NecrosisHip JointHumansMaleMiddle AgedOsteoarthritis, HipPatient PositioningSurgery, Computer-Assisted

Identifiers

PMID31834164
PMCPMC7170692
OpenAlexW2995744149

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.