Evidence map›Paper›PMID 36154920›Full record

ArticleBMC musculoskeletal disorders2022

Assessing component orientation of total hip arthroplasty using the low-dose bi-planar radiographs.

Zhuyi Ma, Hao Tang, Yixin Zhou, Siyuan Wang, Dejin Yang, Shaoyi Guo

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in BMC musculoskeletal disorders, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
1.5field-weighted citation impact, top 17% 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

5 citing papers in PubMed, 7 citations in OpenAlex.

  1. Article
  2. Observational
  3. [Hip surgery: 3D printed implants in revision arthroplasty].Orthopadie (Heidelberg, Germany) · 2025
    Review
  4. Review
  5. The accuracy and precision of acetabular implant measurements from CT imaging.Frontiers in bioengineering and biotechnology · 2023
    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

6 authors at 2 institutions in 1 country.

Zhuyi MaDepartment of Orthopaedics, Beijing Jishuitan Hospital, Fourth Clinical College of Peking University, No.31 Xinjiekou East Street, Xicheng District, Beijing, China.
Hao TangDepartment of Orthopaedics, Beijing Jishuitan Hospital, Fourth Clinical College of Peking University, No.31 Xinjiekou East Street, Xicheng District, Beijing, China.
Yixin ZhouDepartment of Orthopaedics, Beijing Jishuitan Hospital, Fourth Clinical College of Peking University, No.31 Xinjiekou East Street, Xicheng District, Beijing, China. orthoyixin@yahoo.com.
Siyuan WangDepartment of Orthopaedics, Beijing Jishuitan Hospital, Fourth Clinical College of Peking University, No.31 Xinjiekou East Street, Xicheng District, Beijing, China.
Dejin YangDepartment of Orthopaedics, Beijing Jishuitan Hospital, Fourth Clinical College of Peking University, No.31 Xinjiekou East Street, Xicheng District, Beijing, China.
Shaoyi GuoDepartment of Orthopaedics, Beijing Jishuitan Hospital, Fourth Clinical College of Peking University, No.31 Xinjiekou East Street, Xicheng District, Beijing, China.
Peking University · CNBeijing Jishuitan Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThree-dimensional computed tomography (3D CT) reconstruction is the reference standard for measuring component orientation. However, functional cup orientation in standing position is preferable compared with supine position. The low-dose bi-planar radiographs can be used to analyze standing cup component orientation. We aimed to assess the validity and reliability of the component orientation using the low-dose bi-planar radiographs compared with the 3D CT reconstruction, and explore the differences between the functional cup orientation in standing radiographs and supine CT scans.

methodsA retrospective study, including 44 patients (50 hips) with total hip arthroplasty (THA), was conducted. CT scans were taken 1 week after surgery and the low-dose bi-planar radiographs were taken in the follow-up 6 weeks later. Component orientation measurement was performed using the anterior pelvic plane and the radiographic coronal plane as reference, respectively.

resultsThe study showed no significant difference in cup anteversion (p = 0.160), cup inclination (p = 0.486), and stem anteversion (p = 0.219) measured by the low-dose bi-planar radiographs and 3D reconstruction. The differences calculated by the Bland-Altman analysis ranged from - 0.4° to 0.6° for the three measured angles. However, the mean absolute error was 4.76 ± 1.07° for functional anteversion (p = 0.035) and 4.02 ± 1.08° for functional inclination (p = 0.030) measured by the bi-planar radiographs and supine CT scans.

conclusionsThe low-dose bi-planar radiographs are the same reliable and accurate as 3D CT reconstruction to assess post-THA patients' component orientation, while providing more valuable functional component orientation than supine CT scans.

Indexed as

Arthroplasty, Replacement, HipHip ProsthesisAcetabulumHumansReproducibility of ResultsRetrospective StudiesFunctional component orientationThe low-dose bi-planar radiographsThree-dimensional computed tomography

Identifiers

PMID36154920
PMCPMC9511787
OpenAlexW4297192959

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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.